Updated on 2024/12/26

写真a

 
KANATANI Mitsugu
 
Organization
Academic Assembly Institute of Medicine and Dentistry SHIGAKU KEIRETU Lecturer
Faculty of Dentistry Department of Dentistry Lecturer
Graduate School of Medical and Dental Sciences Oral Life Science Oral Health Science Lecturer
Title
Lecturer
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Degree

  • 博士(歯学) ( 1994.3   新潟大学 )

Research Interests

  • 器械

  • Dental materials and devices

  • 歯科材料

Research Areas

  • Nanotechnology/Materials / Structural materials and functional materials

  • Nanotechnology/Materials / Composite materials and interfaces

  • Life Science / Prosthodontics

Research History (researchmap)

  • Niigata University   Faculty of Dentistry School of Dentistry   Senior Assistant Professor

    2024.4

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  • Niigata University   Graduate School of Medical and Dental Sciences Oral Life Science   Senior Assistant Professor

    2024.4

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  • Niigata University   Graduate School of Medical and Dental Sciences Oral Life Science   Senior Assistant Professor

    2021.6

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    Country:Japan

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  • Niigata University   Graduate School of Medical and Dental Sciences Oral Life Science   Assistant Professor

    2007.4 - 2021.5

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  • - 新潟大学大学院医歯学総合研究科 助教

    2007

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  • Niigata University   Graduate School of Medical and Dental Sciences

    2001 - 2007

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  • - Assistant Professor, Graduate School of

    2001

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  • Niigata University   Faculty of Dentistry

    1985 - 2001

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  • Assistant Professor, Faculty of Dentistry,

    1985 - 2001

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  • Medical and Dental Sciences, Niigata University

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  • Niigata University

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Research History

  • Niigata University   Institute of Medicine and Dentistry, Academic Assembly   Lecturer

    2021.6

  • Niigata University   School of Dentistry, Faculty of Dentistry   Lecturer

    2021.6

  • Niigata University   Oral Health Science, Oral Life Science, Graduate School of Medical and Dental Sciences   Lecturer

    2021.6

  • Niigata University   Graduate School of Medical and Dental Sciences Oral Life Science   Assistant Professor

    2004.4 - 2021.5

  • Niigata University   Faculty of Dentistry School of Dentistry   Assistant Professor

    2004.4 - 2021.5

Education

  • Niigata University   Faculty of Engineering

    - 1983

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  • Niigata University   Faculty of Engineering   化学工学

    - 1983

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    Country: Japan

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Professional Memberships

  • 日本歯科理工学会

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  • 日本補綴歯科学会

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  • International Association for Dental Research

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  • 日本セラミックス協会

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  • 国際歯科研究学会(International Association for Dental Research)

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Committee Memberships

  •   委員  

    2018.4 - 2020.4   

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  •   理事(会計担当)  

    2013.1 - 2013.5   

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  •   幹事(会計担当)  

    2008.1 - 2008.12   

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  •   委員  

    2006.4 - 2007.3   

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  •   委員  

    2005.4 - 2006.3   

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  •   歯科技工士国家試験委員  

    2000.4 - 2001.3   

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  •   幹事(会計担当)  

    1998.1 - 1998.12   

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  •   歯科技工士国家試験委員  

    1996.4 - 1997.3   

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  •   委員  

    1991.4 - 1992.3   

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Papers

  • SDGsの達成を目標としたアルジネート印象材の開発 Reviewed

    青柳裕仁, 木村龍弥, 髙 昇将, 金谷 貢

    日本医用歯科機器学会誌(歯機器誌)   29 ( 1 )   62 - 66   2024.4

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  • Effect of Silicon Carbide Fiber Length on the Flexural Strength and Flexural Modulus of Short Silicon Carbide Fiber-Reinforced Resin Reviewed

    Norimasa TAKA, Yujin AOYAGI, Keito MIIDA, Mitsugu KANATANI, Hiroshi OGAWA

    Journal of Functional Biomaterials   15 ( 2 )   30   2024.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:MDPI AG  

    Silicon carbide fibers have superior flexural properties and chemical stability compared to glass fibers. We investigated the flexural strength and modulus of an experimental, short silicon carbide fiber-reinforced resin. Short silicon carbide fibers with lengths of ~0.5, 1, 2, and 3 mm were prepared and silanized. Urethane dimethacrylate and triethylene glycol dimethacrylate were mixed at a 70:30 wt% ratio and used as the matrix resins. Each length of short silicon carbide fibers and the matrix resin were combined using a mixing machine and then used for specimen preparation. The three-point bending test conditions were in accordance with ISO 4049:2009. The fracture surfaces of the specimens after the three-point bending test were observed using secondary electron images. The data were statistically analyzed with a one-way analysis of variance and Tukey’s HSD test (α = 0.05). The flexural strength and modulus of the specimens containing 2 mm or 3 mm silicon carbide fibers were significantly higher than the other specimens. The river pattern was observed more clearly in specimens containing shorter silicon carbide fibers, although this pattern was observed in all specimens.

    File: Taka N, Kanatani M, et al 3名-Effect of Silicon Carbide Fiber Length on the Flexural Strength and Flexural Modulus of Short Silicon Carbide Fiber-Reinforced Resin. J. Funct. Biomater. 15(2), 30, 2024. jfb-15-00030.pdf

    DOI: 10.3390/jfb15020030

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  • Case studies of strategic information system as the way of computer system utilization Invited Reviewed

    KANATANI Mitsugu, AOYAGI Yujin, TAKA Norimasa, MIIDA Keito, IZUMI Kenji

    J Jpn Dent Sci Fed (Journal of Japanese Dental Science Federation)   2 ( なし )   58 - 63   2023.12

  • Analysis of setting expansion pressure on dental calcium sulfate hemihydrate using universal testing machine Reviewed

    ITO Keiichi, KANATANI Mitsugu, IZUMI Kenji

    J J Dent Mater   41 ( 2 )   162 - 172   2022.5

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    File: 伊藤圭一,金谷 貢ほか1名-万能試験機を用いた歯科用石膏の硬化膨張圧の検討-日歯理工誌 41(2) 162-172, 2022-5.pdf

    DOI: 10.18939/jsdmd.41.2_162

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  • Surgical Cases Using General Anesthesia with Mafutsuto Performed by Juntei (Roan) Oda, Seishu Hanaoka's Disciple Reviewed

    63 ( 3 )   263 - 274   2017.9

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    Other Link: http://search.jamas.or.jp/link/ui/2017405210

  • XPS analysis of corroded surface in contact corrosion of Ag-Pd-Cu-Au alloys containing different amounts of Cu Reviewed

    Kaneko Hiromi, Kanatani Mitsugu, Ono Takahiro, Nomura Shuichi

    Annals of Japan Prosthodontic Society   7 ( 4 )   371 - 379   2015.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japan Prosthodontic Society  

    <b>Purpose: </b>Little is known about the corrosion caused by contact with Ag-Pd-Cu-12Au alloys which are commonly used for cast crowns. The purpose of this study was to investigate the state of early corrosion behavior by contact with Au-Pd-Cu-Au alloys containing different amounts of Cu using X-ray photoelectron spectroscopy.<br><b>Materials and Methods:</b> Three kinds of plate specimens of Ag-Pd-Cu-Au alloy containing different amounts of Cu were cast, and two specimens each were fixed and immersed into corrosion liquid for eight weeks. Then, the specimens were ultrasonically cleaned with acetone and ultra pure water and the corroded surface was analyzed using X-ray photoelectron spectroscopy. The depth that could be analyzed by XPS was about 10 nm, so the analytical results, it was the outermost surface and internal within 10 nm.<br><b>Results:</b> Remarkable discoloration was observed on the edge of the contacted area on the specimen containing a larger amount of Cu. As early corrosion products, Ag<sub>2</sub>O, PdO, CuO, Cu<sub>2</sub>S and CuSO<sub>4</sub> were observed and PdO was detected in the deeper part in many specimens with larger content of Cu. There was a higher ratio of CuSO<sub>4</sub> in the specimen with a large content of Cu, and the ratio of CuO and Cu<sub>2</sub>S increased in the deeper part. The presence of Cu<sub>2</sub>S was detected from the surface to the inside of the specimen with a smaller content of Cu.<br><b>Conclusions:</b> In the case of contact with Ag-Pd-Cu-Au alloys with different Cu amounts, Ag<sub>2</sub>O, PdO, CuO, Cu<sub>2</sub>S and CuSO<sub>4</sub> were formed in early corrosion.

    DOI: 10.2186/ajps.7.371

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    Other Link: https://jlc.jst.go.jp/DN/JLC/20016440485?from=CiNii

  • Cyclic mechanical pressure-loading alters epithelial homeostasis in a three-dimensional in vitro oral mucosa model: clinical implications for denture-wearers Reviewed

    A. Shiomi, K. Izumi, A. Uenoyama, T. Saito, N. Saito, H. Ohnuki, H. Kato, M. Kanatani, S. Nomura, H. Egusa, T. Maeda

    Journal of Oral Rehabilitation   42 ( 3 )   192 - 201   2015.3

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    DOI: 10.1111/joor.12254

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  • Effect on Bonding Properties of Poly Methyl Methacrylate Resin for Denture Base by Low-Energy Electron Beam Irradiation Reviewed

    18 ( 1 )   20 - 24   2015.3

  • Effect on Water Absorption Rate and Surface Hardness of Poly Methyl Methacrylate Resin for Denture Base by Low-Energy Electron Beam Irradiation Reviewed

    18 ( 1 )   14 - 19   2015.3

  • Usefulness of a rotation-revolution mixer for mixing powder-liquid reline material Reviewed

    Yoshio Yamaga, Mitsugu Kanatani, Shuichi Nomura

    JOURNAL OF PROSTHODONTIC RESEARCH   59 ( 1 )   71 - 78   2015.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER IRELAND LTD  

    Purpose: The purpose of this study was to evaluate the distribution of bubbles, degree of mixing, flowability and mechanical strength of powder-liquid reline material by manually and with a rotation-revolution (planetary) mixer, and to determine the usefulness of a rotation-revolution mixer for this application.Methods: Powder-liquid reline material (Mild Rebaron, GC, Tokyo, Japan) was mixed with a powder to liquid ratio of 1:0.62 according to the manufacturer's instruction. Two methods were used to mix it: mixed by manually ("manual-mixing") and automatically with a rotation-revolution mixer (Super Rakuneru Fine, GC, Tokyo, Japan; "automatic-mixing"). Disc-shaped specimens, 30 mm in diameter and 1.0 mm in thickness, were used to observe the distribution of bubbles in at 10x magnifications. Flowability tests were carried out according to the JIS T6521 for denture base hard reline materials. A three point bending test was carried out by a universal testing machine. Elastic modulus and flexural stress at the proportional limit were calculated.Results: A median of 4 bubbles and inhomogeneous were observed in manual-mixed specimens. However, no bubbles and homogeneous were observed in automatic-mixed specimens. Flowability was within the JIS range in all mixing conditions and did not differ significantly across conditions. The elastic modulus was the same for manual-mixed and automatic-mixed specimens. On the other hand, the flexural stress at the proportional limit differed significantly between manual-mixed and automatic-mixed specimens.Conclusion: The results confirm that rotation-revolution mixer is useful for mixing powder-liquid reline material. Automatic-mixing may be recommended for clinical practice. (C) 2014 Japan Prosthodontic Society. Published by Elsevier Ireland. All rights reserved.

    DOI: 10.1016/j.jpor.2014.11.002

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  • Surface analysis of commercially pure titanium implant retrieved from rat bone Part 2: Biomolecular adsorption influenced by surface texture Reviewed

    Watanabe K, Okawa S, Kanatani M

    Niigata Dent J   43 ( 1 )   13 - 25   2013.6

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  • Calcium phosphates deposited on titanium electrode surface-Part 1: Effect of the electrode polarity and oxide film on the deposited materials Reviewed

    Seigo Okawa, Kouichi Watanabe, Mitsugu Kanatani

    DENTAL MATERIALS JOURNAL   32 ( 2 )   281 - 288   2013.4

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    We report experimental results about the effect of polarity of electrode and anodized titanium oxide film on the deposited materials by electrolysis of an acidic calcium phosphate solution. Mirror-polished titanium and anodized titanium were Used as anode or cathode, and a Pt plate was used as a counter electrode. The load voltage was held constant at 20 VD C. No deposited materials were found on the anode surface. On the other hand, dicalcium phosphate dihydrate (DCPD) was deposited on the cathode surface at the beginning of the electrolysis. After the electrolysis time 600 s, the non-stoichiometric hydroxyapatite (HAp) with several hundred nanometers was formed on the specimen surface. Based on X-ray photoelectron spectroscopy data, the anodized oxide film contained both P5+ and P3+ ions. This characteristic of the oxide film and the electrolysis conditions were related to the behavior of the deposition of ultra fine HAp with high crystallinity.

    DOI: 10.4012/dmj.2012-197

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  • ヘリウムガスを用いた一室加圧型鋳造における鋳型空洞の圧力挙動 Reviewed

    大川成剛, 渡辺孝一, 金谷 貢

    新潟歯学会誌   42 ( 2 )   21 - 26   2012.12

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  • Effectiveness of workshop in postgraduate education for paradental staff : Investigation based on questionnaire completed in workshop for dental technologists Reviewed

    KANATANI Mitsugu, OKADA Naoto, YAMANOI Yoshihiko, TOBITA Shigeru, TANOKUCHI Katsunori, KUMAKURA Kikuo, IWASHIMA Hideaki, MARUYAMA Mitsuru, SAKAI Takashi, KURATA Sonoko, WAKASUGI Junichi, ITO Keiichi

    31 ( 2 )   123 - 130   2011.1

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  • Adhesion of hollow calcium-deficient hydroxyapatite microspheres onto titanium Reviewed

    Isao Kimura, Mitsugu Kanatani, Kouichi Watanabe

    DENTAL MATERIALS JOURNAL   28 ( 6 )   700 - 707   2009.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:JAPANESE SOC DENTAL MATERIALS DEVICES  

    Microcapsules containing active drugs, e.g. an antimicrobial agent, with a hydroxyapatite (HAp) shell are expected to prevent infection and to improve osseointegration Simultaneously when used as implant materials. This study was conducted to investigate the effects of etching with hydrofluoric acid (HF) to change the surface morphology of titanium in cases of adhesion of calcium-deficient HAp microspheres onto titanium. The microspheres were mixed with Hanks' balanced salt solution (HBSS) to prepare slurry; the slurry was then put between two titanium disks that had been etched and kept soaking in HBSS for seven days at 310 K. The coverage and the degree of adherence of the microsphere were evaluated using electron probe microanalysis. The etching at an HF concentration of 0.10 mol/L caused the greatest adhesion. Changing the temperature between 303 and 323 K showed a tendency for the degree of adherence to increase.

    DOI: 10.4012/dmj.28.700

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  • Characterization of calcium phosphate deposited on valve metal by anodic oxidation with polarity inversion Reviewed

    Seigo Okawa, Kikuo Homma, Mitsugu Kanatani, Kouichi Watanabe

    DENTAL MATERIALS JOURNAL   28 ( 4 )   513 - 518   2009.7

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    Electrochemical deposition of calcium phosphate (CAP) on valve metals such as Ta, Nb, and Zr, was performed by anodic oxidation with alternate polarity inversion at an applied 20 VDC. A saturated hydroxyapatite(HAP)-phosphoric acid solution (pH 3) was used as the electrolyte. MR, XRD, and XPS were employed to investigate the detailed characteristics of the deposition. HAP was precipitated on Ta; HAP including brushite and monetite on Nb; and HAP and monetite on Zr. The Ca/P atomic ratios were 1.3-1.5 by XPS, and HPO42- bands were detected on Ta by FTIR. Therefore, the HAP precipitated on Ta was a Ca-deficient HAP. In addition, the XPS spectra of the specimens showed that phosphate ions were incorporated into the anodic oxide film. Deposits with nano-grain size were observed by AFM. The results confirmed that CAP with nano-grain size was deposited on valve metals by the anodic oxidation with polarity inversion.

    DOI: 10.4012/dmj.28.513

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  • Rapid Nitridation of Al Powder in a Floating System Reviewed

    Kobayashi T, Hazwani KN, Kanatani M, Hotta M, Hotta N

    Materials Science and Technology   46 ( 3 )   147 - 152   2009.6

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  • Surface analysis of commercially pure titanium implant retrieved from rat bone. Part 1: Initial biological response of sandblasted surface Reviewed

    Watanabe K, Okawa S, Kanatani M, Homma K

    Dent Mater J   28 ( 2 )   178 - 184   2009.4

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  • Application of Nitrides to Dental Casting : Part 3. Feasibility as Coating Materials for Co-Cr Alloy in a Case of Using Gypsum-Bonded Investment as Outer Investment Reviewed

    Kanatani Mitsugu, Nomura Shuichi, Ishioka Kiyoshi, Hotta Noriyasu, Kimura Isao

    The journal of the Japan Prosthodontic Society   34 ( 6 )   1235 - 1246   1990.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Japan Prosthodontic Society  

    Nitrides used in this experiment are h-BN, AIN and Si_3N_4. The feasibility of using the nitrides was studied as wax pattern coating materials for a Co-Cr alloy in an atmosphere of argon. Wax patterns were painted with the nitride coating material (first investing), and then it was outer-invested witla a mixture of gypsum-bonded investment and water (second investing). The temperature of mold was 700℃, and the thin specimens were cast with an argon arc vacuum-pressure casting machine in the Co-Cr alloy (composition Co : 63 wt%, Cr : 27, Mo : 5, Bat. : 5 ; melting point : 1,380℃). Surfaces of cast specimens were investigated with the unaided eye, a scanning electron microscope, a surface roughness analyzer, an X-ray diifractometer and a micro-Vickers hardness tester. Furthermore, the cast clasp using an h-BN coating material were made and investigated with the unaided eye. Results were sumcmarized as follows : 1. The nitrides inhibited remarkably a reactiona between the cast specimen and the investment. 2. BN had the good effect of separation. 3. The cast surface coated BN had less clitaging than uncoated one. This indicated that cleansability and work efficiency were improved. 4. The surface roughness (Rz) of the specimens decreased to 32, 42 and 60% of the control with BN, Si_3N_4 and AlN, respectively. 5. A hardness change of the alloy by casting was the least in the case of using BN. 6. BN also had the effect in fabricating a cast clasp in the clinical form.

    DOI: 10.2186/jjps.34.1235

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    Other Link: http://search.jamas.or.jp/link/ui/1992023902

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Books

  • 歯科理工学教育用語集 第2版

    金谷 貢( Role: Contributor ,  用語番号1, 13, 36, 37, 76, 100, 101, 102, 180, 195, 238, 269, 290, 291, 292, 421, 422, 423, 424, 450, 451, 469, 573, 582, 583, 584, 587, 589, 592, 895, 897, 972, 973, 974, 1006)

    医歯薬出版  2011.9 

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    Language:Japanese Book type:Dictionary, encyclopedia

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  • 歯科理工学教育用語集

    金谷 貢( Role: Contributor ,  用語番号1, 12, 35, 36, 75, 99, 100, 101, 178, 193, 235, 266, 287, 288, 289, 417, 418, 419, 420, 446, 447, 465, 568, 577, 578, 579, 582, 584, 587, 883, 885, 953, 954, 955, 986)

    医歯薬出版  2005.9 

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    Language:Japanese Book type:Dictionary, encyclopedia

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  • 歯科理工学教育用語集(共著)

    医歯薬出版  2005  ( ISBN:4263455851

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MISC

  • Effect of titanium sputtering deposition time on new zirconia surface treatment to shear bond strength

    木村龍弥, 青柳裕仁, 高昇将, 金谷貢

    日本接着歯学会学術大会講演集(Web)   39th ( 3 )   119 - 119   2020

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    Language:Japanese  

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  • Evaluation of minimum length of Silicon Carbide short fiber to reinforce matrix resin used in dentistry.

    高昇将, 三井田慶斗, 木村龍弥, 青柳裕仁, 金谷貢, 魚島勝美

    日本補綴歯科学会関越支部学術大会プログラム・抄録集(Web)   2020 ( 関越支部学術大会特別号 )   13 - 13   2020

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  • Effect of Silanization Using Commercial Silane Coupling Agent to Silicon Carbide Fiber on Flexural Properties of Fiber Reinforced Resin

    高昇将, 木村龍弥, 青柳裕仁, 金谷貢

    日本接着歯学会学術大会講演集(Web)   39th ( 3 )   118 - 118   2020

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  • P-43 Surface characteristics of PEEK by SiC polishing : Comparison of polishing characteristics of restorative resins for CAD/CAM

    Okawa S, Taka N, Kanatani M, Izumi K

    The journal of the Japanese Society for Dental Materials and Devices   34 ( 5 )   387 - 387   2015.9

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    Language:Japanese   Publisher:The Japanese Society for Dental Materials and Devices (JSDMD)  

    The aim of this study was to characterize the surface properties of PEEK and CAD/CAM resins, CAM-A and CAM-B, by SiC polishing. Two way polishing unit was used with a waterproof P#1200-SiC paper. Mean wear rate was calculated based on the polishing pressure and sliding distance. The surface properties were analyzed with AFM. The mean wear rate of PEEK, CAM-A and CAM-B was about 0.5, 1.9 and 0.5 mm^3/Nm, respectively. The surface roughness (Ra) of these specimens was around 0.51, 0.29 and 0.23 μm, respectively. These results indicated that PEEK can be used as a material for CAD/CAM resin.

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  • 低エネルギー電子線照射がポリメチルメタクリレートレジンの吸水性,表面硬さならびに接着性に及ぼす影響 Invited

    伊藤圭一, 金谷 貢, 野村章子

    日本歯技   ( 555 )   33 - 39   2015.8

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  • P-27 Application of hexagonal boron nitride for gold alloy casting in air

    Kanatani M, Okawa S, Izumi K, Kimura I

    The journal of the Japanese Society for Dental Materials and Devices   34 ( 2 )   98 - 98   2015.3

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    Language:Japanese   Publisher:The Japanese Society for Dental Materials and Devices (JSDMD)  

    The present study examined the feasibility of hexagonal boron nitride (hBN) as a wax pattern coating material for gold alloy casting in air. After wax patterns were coated with hBN, they were outer-invested with a gypsum-bonded investment. The thin specimens made of the gold alloy, 0.55 mm in thickness, were cast in air. The color of the cast surface by using hBN was rusty red. The X-ray diffractometer analysis revealed that copper oxide produced on the hBN cast surface was the only Cu_2O, and CuO produced on the control was not detected. This means that hBN remarkably inhibited the oxidation during casting. Thus, the use of hBN could be effective in hardness of the cast surface.

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  • P-34 Preparation of organo-mineral complexes by electrolysis : Adhesion characteristic of mineral particles on metal plate

    Okawa S, Kanatani M, Izumi K

    The journal of the Japanese Society for Dental Materials and Devices   33 ( 5 )   420 - 420   2014.9

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    Language:Japanese   Publisher:The Japanese Society for Dental Materials and Devices (JSDMD)  

    The aim of this study was to characterize the adhesion of mineral particles to a metal (titanium) plate by electrolysis. MMA including a conductive monomer and zircon powder treated with stearic acid was used as an electrolyte. Titanium and carbon plates were used as electrodes. Twenty volts DC were applied between the electrodes for 3,600 s. EPMA revealed the adhesion of zircon particles to the metal surface. In addition, S, O elements were concurrently detected on and around the particles. Since both elements were derived from the conductive monomer, the present study indicated the formation of an organic material including conductive monomer on the metal surface preceded the adhesion of zircon particles.

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  • P-34 Effects of water droplets adhering on a mechanical spatulator with vacuum and hand spatula on water-powder ratio and compressive strength of dental stone

    Kanatani M, Okawa S, Izumi K, Kimura I

    The journal of the Japanese Society for Dental Materials and Devices   33 ( 2 )   143 - 143   2014.3

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    Language:Japanese   Publisher:The Japanese Society for Dental Materials and Devices (JSDMD)  

    The water-powder ratio (W/P ratio) affects compressive strength of dental stone. In this study, we investigated the effects of water droplets adhering on a mechanical spatulator with vacuum and hand spatula on W/P ratio. The amount of water droplets was measured using an electronic balance. The compressive strength of dental stone was calculated based on the loaded weight. The total amount of water droplets adhering onto spatulator (volume; 250 and 500 mL) and a hand spatula were 0.90 mL (SD 0.10) and 1.33 mL (SD 0.12), respectively. The compressive strength of the dental stone were 10.23 kg/mm^2 (SD 0.27) and 6.89 kg/mm^2 (SD 1.31) at W/P ratio 0.20 and 0.23, respectively. Thus, the total amount of water droplets adhering on those instruments should be taken into consideration when mixing dental stone.

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  • P-57 Contact corrosion of Ag-Pd-Cu-Au alloys with different Cu content : Analysis of corroded surface by XPS

    Kaneko H, Okawa S, Kanatani M, Ito K, Yamaga Y, Nomura S, Izumi K

    The journal of the Japanese Society for Dental Materials and Devices   32 ( 5 )   407 - 407   2013.9

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    Language:Japanese   Publisher:The Japanese Society for Dental Materials and Devices (JSDMD)  

    The aim of this study was to investigate the effect on corrosion products due to difference in Cu content. We prepared three kinds of Ag-Pd-Cu-Au alloys with difference Cu content. After casting in 10 × 20 × 1 mm^3, the contacted casting plates were immersed in corrosion solution for 8 weeks at 37℃. After immersed, we analyzed alloy surface by XPS. In spite of Cu content, a peak derived from PdO was confirmed in Pd3d XPS spectra of all specimens.

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  • P-19 A study of strategy beneficial for patients by utilizing title system of Japanese society for dental materials and devices

    Kanatani M, Okawa S, Yamaga Y, Kaneko H, Izumi K

    The journal of the Japanese Society for Dental Materials and Devices   32 ( 5 )   353 - 353   2013.9

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    Japanese society for dental materials and devices has title system of Dental Materials Adviser (DMA) and Dental Materials Senior Adviser (DMSA), which are titles about dental materials and devices. Dentists use dental materials and devices in their clinics. Therefore, it appears to be beneficial for patients that dentists take DMA and DMSA. In this study, we explored the strategy beneficial for patients by utilizing this title system. Since Japan dental association (JDA) is the largest association of dentists including general practitioners, we will be able to inform dentists of our title system by using the advertising media in the JDA. If the JDA agreed with our plan, the number of DMA and DMSA would increase dramatically. Consequently, our strategy would result in the benefit for thousands of patients.

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  • P-62 Preparation and characterization of organo-mineral complex by electrolysis

    Okawa S, Kaneko H, Yamaga Y, Kanatani M, Izumi K

    The journal of the Japanese Society for Dental Materials and Devices   32 ( 5 )   412 - 412   2013.9

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    The aim of this study was to prepare organo-mineral complex by electrolysis and to characterize it. MMA including conductive monomer and oxide with a stearic acid treatment was used as an electrolyte. Titanium and stainless substrate were used as electrodes. Twenty volts DC were applied between the electrode and Pt counter electrode in the electrolyte for 3,600 s. FTIR results confirmed the preparation material to be a PMMA. Mineral particles were well dispersed on the PMMA matrix according to the EPMA results. The mineral particle size was the order of submicron by AFM image. Consequently, the organo-mineral complex was easily prepared by the electrolysis.

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  • Effect of rotation-revolution mixer for powder-liquid type denture lining material on mechanical properties

    YAMAGA Y, OKAWA S, KANATANI M, ITO K, KANEKO H, NOMURA S, WATANABE K

    The journal of the Japanese Society for Dental Materials and Devices   31 ( 5 )   454 - 454   2012.9

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    Mechanical properties of powder-liquid type lining materials are inferior to those of heat cured denture base resins, which causes the reduction of the strength of the denture. We studied the effect of rotation-revolution mixer compared with hand mixing for powder-liquid type denture lining material on mechanical properties. Flexural stress at the proportional limit was significantly increased, while flexural modulus was similar to the specimen made with rotation-revolution mixer mixing.

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  • Modification of self-curing acrylic resin : Effect of LEB irradiation on polymer particles

    ITO K., OKAWA S., KANATANI M., KANEKO H., YAMAGA Y., NOMURA A., NOMURA S., WATANABE K.

    The journal of the Japanese Society for Dental Materials and Devices   31 ( 5 )   451 - 451   2012.9

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    Self-curing acrylic resin is used in a variety of clinical applications, e.g. fabricating provisional restorations, adjusting occlusion, and repairing dentures. However, this resin is inferior to heat-curing acrylic resin in chemical and mechanical properties. In this study, to improve these properties, we irradiated low-energy electron beam (LEB) to polymer particles, and then the polymer particles were polymerized by ordinary method. We investigated the influence of LEB irradiation on polymer particles. Consequently, LEB irradiation caused formation of the free radical, which contributed to increase of flexural strength.

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  • Characterization of calcium phosphate deposited on magnesium and its alloys by applying polarity inversion electrolysis

    OKAWA S, ITO K, KANEKO H, YAMAGA Y, WATANABE K, KANATANI M

    The journal of the Japanese Society for Dental Materials and Devices   31 ( 5 )   482 - 482   2012.9

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    The aim of this study was to investigate the characterization of calcium phosphate deposited on magnesium and its alloys (AZ31 and AZ61) by applying polarity inversion electrolysis. Magnesium and its alloys were used as electrodes. One volt DC was applied between the electrode and Pt counter electrode in an acid calcium phosphate solution for 600s. The polarity was swapped every 60s. XRD results confirmed the deposited material to be a magnesium hydroxide and brushite. XPS spectrum of Mg2p was observed for the outermost surface. Therefore, the brushite was deposited locally on the metal surface.

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  • Character of resin and fillers in composite resins having different flow properties

    WATANABE K, OKAWA S, KANATANI M, ITO K, KANEKO H, YAMAGA Y

    The journal of the Japanese Society for Dental Materials and Devices   31 ( 5 )   429 - 429   2012.9

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    Appropriate flow property of composite resin is required for application to a variety of prepared cavities. Three types of commercial composite resin having different flow properties were investigated with electron probe micro-analyser (EPMA), infrared spectroscopy (FT-IR) and atomic force microscope (SPM). The filler-size of the most flowable type was larger than those of other two types. The weight content of filler was almost equal among these three types. In conclusion, the filler size plays an important role for flow properties.

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  • Effectiveness of workshop in postgraduate education on dental materials and devices : Investigation based on questionnaire survey

    KANATANI M, OKAWA S, WATANABE K, ITO K, KANEKO H, YAMAGA Y

    The journal of the Japanese Society for Dental Materials and Devices   31 ( 2 )   117 - 117   2012.3

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    The postgraduate education on dental materials and devices is very important to improve the quality of the dental treatment. In the study, effectiveness of workshop (WS) as the system in the postgraduate education on dental materials and devices was investigated based on the questionnaire survey. Most of the participants replied "I got something great from what WS provides.", "WS is effective in the postgraduate education." and "I want to participate again." In conclusion, WS is effective as the system in the postgraduate education on dental materials and devices.

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  • Corrosion of dental alloys (Part1) : Surface analysis of dental alloys removed from oral cavities

    KANEKO H, OKAWA S, KANATANI M, ITO K, YAMAGA Y, NOMURA S, WATANABE K

    The journal of the Japanese Society for Dental Materials and Devices   30 ( 5 )   333 - 333   2011.9

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    Ag-Pd-Cu-Au alloys are widely used as dental casting alloys. However, they have some clinical problems such as corrosion and discoloration. XPS is effective for analyzing the uppermost surface of dental alloys. In this study, we used XPS to investigate surface chemical properties at none-discoloration areas of removed Ag-Pd-Cu-Au alloys. According to the results, in addition to the alloy elements, S, C, N and O were detected at areas of none-discoloration. Therefore, the formation of oxides and sulfides was estimated even at areas of none-discoloration.

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  • Corrosion behavior of dental alloys in the solution including fluoride ions : Part 1 : Corrosion reaction of silver alloy at early stage

    WATANABE K, OKAWA S, KANATANI M, ITO K, KANEKO H, YAMAGA Y

    The journal of the Japanese Society for Dental Materials and Devices   30 ( 5 )   313 - 313   2011.9

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    The influence of fluoride ions on the corrosion behavior of Ag-based alloy was investigated. The cast specimens of a commercial Ag-based alloy (65Ag-22Sn-13Zn) were immersed in 7% polyvinylpyrrolidone iodine (povidone-iodine) solution with and without fluoride ions. After that, the alloy surface was examined by means of XPS to investigate the corrosion behavior. In the case of solution containing fluoride ions, notable intense Sn and F peaks were detected, suggesting that tin fluoride compound was formed.

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  • Effect of anodic oxide film thickness on characteristics of deposited calcium phosphate by applying polarity inversion electrolysis

    OKAWA S, ITO K, KANEKO H, YAMAGA Y, WATANABE K, KANATANI M

    The journal of the Japanese Society for Dental Materials and Devices   30 ( 5 )   334 - 334   2011.9

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    The aim of this study is to investigate the effect of anodic oxide film thickness on characteristics of deposited calcium phosphate by applying polarity inversion electrolysis method. After mirror polished titanium were treated with anodic oxidation at 20 and 50VDCs for 60s, they were used for the negative electrode. Finally, calcium phosphate solution was electrolyzed at 20VDC for 600s. XRD and AFM were employed to study the characterization of the deposited calcium phosphate. A thick oxide film formed by the anodic oxidation reduced the electrolytic current in the electrolysis. The smaller current caused the smaller deposited calcium phosphate particles.

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  • Effect of LEB irradiation on surface properties of PMMA

    ITO K, OKAWA S, KANATANI M, KANEKO H, YAMAGA Y, NOMURA A, NOMURA S, WATANABE K

    The journal of the Japanese Society for Dental Materials and Devices   30 ( 5 )   338 - 338   2011.9

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    PMMA (Poly methylmethacrylate) is used widely as denture base materials. To improve mechanical properties of polymers, the surface modification of PMMA by electron beam irradiation has been studied. In this study, low-energy electron beam (LEB) was irradiated on PMMA surface. We investigated the surface properties before and after LEB irradiation. According to our results, it is demonstrated that LEB irradiation causes main chain scission, increase of the surface roughness, and improvement of the wettability.

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  • Effect of rotation-revolution mixer on mixing and degassing of denture reline materials

    YAMAGA Y, OKAWA S, KANATANI M, ITO K, KANEKO H, NOMURA S, WATANABE K

    The journal of the Japanese Society for Dental Materials and Devices   30 ( 5 )   340 - 340   2011.9

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    Denture reline materials are liable to involve bubbles during hand mixing. Moreover, it is difficult to make them homogeneous. In this study, for mixing denture reline materials, we used the rotation-revolution mixer that was popular as automatic alginate mixer. Compared the mixer with the hand mixing, the mixer made the polymer and monomer mixture more homogeneous without any bubbles. These results suggest that the mixer was effective for decreasing bubbles and for making the homogeneous mixture of denture reline materials.

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  • Behavior of dust in dental clinic office Invited

    Kanatani Mitsugu

    40 ( 2 )   175 - 176   2010.12

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    Other Link: http://search.jamas.or.jp/link/ui/2011150484

  • Characterization of calcium phosphate deposited on titanium with thin coatings : Effect of the coatings on the deposited calcium phosphate

    OKAWA S, ITO K, KANEKO H, WATANABE K, KANATANI M

    The journal of the Japanese Society for Dental Materials and Devices   29 ( 5 )   411 - 411   2010.9

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    The aim of this study is to investigate the effect of the coatings on the deposited calcium phosphate. The organic coatings was formed on titanium by electrolyzing MMA, including conducting monomer at 150 VDC for 3,600 s. Calcium phosphate was deposited on the treated specimen by the polarity inversion method in calcium phosphate solution (pH 3) at 20 VDC. XRD, FTIR and AFM were employed to study the characterization of calcium phosphate. The deposited calcium phosphates are influenced by an electrical characteristic of the organic coatings.

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  • Degradation of PMMA under various environments (Part 1) : Precaution for XPS analysis of PMMA surface

    WATANABE K, OKAWA S, KANATANI M, ITO K, KANEKO H

    The journal of the Japanese Society for Dental Materials and Devices   29 ( 5 )   428 - 428   2010.9

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    PMMA widely used as denture base, is degraded under various environments. The surface properties of the PMMA are well characterized by the X-ray photoelectron spectrometer. However, this technique is restricted because of damage caused by the measurement process, such as X-ray or Ar ion irradiation. It was recognized that Ar ion irradiation, used for surface cleaning, and the long period of Al Kα irradiation give serious damage to the structure of the PMMA surface.

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  • Characterization of calcium phosphate deposition on organic thin film coated titanium

    OKAWA S, WATANABE K, KANATANI M

    The journal of the Japanese Society for Dental Materials and Devices   29 ( 2 )   143 - 143   2010.3

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    The aim of this study is to investigate calcium phosphate (CAP) deposition on organic thin film coated titanium. The organic thin film was coated on titanium by electrolyzing MMA including DMSO and a conducting monomer at 110 and 150 VDC for 3,600s. CAP deposited on the treated specimen by polarity inversion method in a hydroxyapatite (HAp) saturated solution (pH 3). XRD, FTIR and AFM were employed to study the characterization of deposited CAP. The deposited CAP was Ca-deficient HAp and brushite for 110 VDC. For 150 VDC, these CAPs and calcium hydroxide were detected. Hybrid coatings of organic thin film/CAPs codeposited on titanium was formed by the electrolyzing method.

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  • Effect of shaking off water drops on mechanical spatulator for vacuum mixing and hand spatula

    KANATANI M, OKAWA S, WATANABE K, KIMURA I

    The journal of the Japanese Society for Dental Materials and Devices   29 ( 2 )   149 - 149   2010.3

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    The water-powder ratio for gypsum-bonded investment influences the setting expansion. In this study, the effect of shaking off water drops on mechanical spatulator and hand spatula were investigated. The amount of water drops was measured by using an electronic balance. The total amount of water drops on the mixing set decreased very much after two times shaking off. By two times shaking off water drops, the influence on the setting expansion ratio of water drops can be avoided at the worst condition. The results demonstrated that shaking off water drops was effective for the setting expansion of gypsum-bonded investment.

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  • Adhesion of hollow calcium-deficient hydroxyapatite microspheres onto a titanium screw

    KIMURA I, KANATANI M

    Journal of the Japanese Society for Dental Materials and Devices   28 ( 5 )   269 - 269   2009.9

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    The final purpose of this study is to develop a high-performance implant, which can prevent infection for a couple of day immediately after the operation and then promote the osseointegration. As a fundamental study, hollow calcium-deficient hydroxyapatite microspheres revealing high solubility were made to adhere onto a titanium screw, of which the surface had been treated with hydrofluoric acid. The effects of conditions for the surface treatment on the surface morphology of titanium and the adhering amount of the microspheres were investigated.

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  • Effects of water drops on mechanical spatulator for vacuum mixing and hand spatula for water-powder ratio

    KANATANI M, OKAWA S, WATANABE K, KIMURA I

    Journal of the Japanese Society for Dental Materials and Devices   28 ( 5 )   370 - 370   2009.9

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    The water-powder ratio (W/P) for stone or gypsum-bonded investment influences setting expansion. In this study, the effects of water drops adhered to mechanical spatulator and hand spatula on W/P were investigated. The amount of water drops was measured by using an electronic balance. The setting expansion rates of an investment were also measured. The total amount of water drops adhered to 250 and 500 ml spatulator and hand spatula were 0.90 ml (SD 0.09 ml) and 1.31 (SD 0.12), respectively. The setting expansion rates of the investment were 0.60 % (SD 0.04 %) and 0.47 (SD 0.04) at W/P 0.31 and 0.35, respectively. The results demonstrated that the total amount of water drops sometimes influences W/P.

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  • Dissolution behavior of dental Ag-Pd-Cu-Au alloy in artificial saliva including protein

    HONMA H, OKAWA S, WATANABE K, KANATANI M

    Journal of the Japanese Society for Dental Materials and Devices   28 ( 5 )   357 - 357   2009.9

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    The purpose of this study is to study the dissolution behavior of dental Ag-Pd-Cu-Au alloys in artificial saliva including protein. The cast specimens (surface area of 6 cm^2) were polished using #1,000 SiC waterproof paper. Fusayama's artificial saliva, Hank's balanced salts solution, and artificial saliva Saliveht with or without mucin as immersion solutions for metal extraction were prepared. The cast specimen was immersed in 50 mL of each immersion solution, and incubated at 37℃ for 7 days. ICP-MS worked by analyzing the released elements. The level of Cu, Zn and Ag from the tested alloys in the Fusayama's artificial saliva without mucin was about twice as high as that of elements in the saliva with mucin.

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  • Electrolysis of ionic liquid : Organic film formed on titanium surface

    OKAWA S, HOMMA K, KANATANI M, WATANABE K

    Journal of the Japanese Society for Dental Materials and Devices   28 ( 5 )   332 - 332   2009.9

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    The aim of this study is to investigate an organic film formed on titanium surface by electrolysis of ionic liquid. The ionic liquid of imidazole system, [C_8H_<15>N_2][PF_6], was used for electrolyte preparation. Mirror polished titanium and platinum plate as an electrode were used. A constant VDC of 40 was applied between the electrodes for 180 s via a DC power unit. FTIR and AFM were employed to study the organic film. The electrolytic oxidation reaction of the imidazole ring resulted in forming the organic film.

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  • Surface properties of dental implants (Part 5) : The relationship between adsorbed biomolecules and surface texture

    WATANABE K, OKAWA S, KANATANI M, HOMMA K

    Journal of the Japanese Society for Dental Materials and Devices   28 ( 5 )   310 - 310   2009.9

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    To investigate the relationship between the surface texture of Ti implant and the adsorption behavior of biomolecules, two kinds of implants (having polished surface or grooved surface) were fabricated from commercial pure titanium. They were inserted to rat bone, retrieved after either 3 hours or 7 days, and analyzed with X-ray photoelectron spectroscopy. Although the amounts of proteins adsorbing were almost equal on the both surfaces, the amount of proteoglycan adsorbing on the polished surface was about 2 times larger than that on the grooved surface.

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  • Anodic oxidation of titanium by polarity inversion in a basic electrolyte

    OKAWA S, HOMMA K, KANATANI M, WATANABE K

    Journal of the Japanese Society for Dental Materials and Devices   28 ( 2 )   120 - 120   2009.3

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  • Corrosion of anodized Ni-Ti orthodontic wire in acidic solution containing fluoride

    HOMMA K, OKAWA S, KANATANI M, WATANABE K

    Journal of the Japanese Society for Dental Materials and Devices   28 ( 2 )   123 - 123   2009.3

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  • Behavior of dust in dental clinic office using attained height of metal particle as circumstantial evidence

    KANATANI M., OKAWA S., WATANABE K., HOTTA N., KIMURA I., KOBAYASHI M.

    Journal of the Japanese Society for Dental Materials and Devices   27 ( 5 )   382 - 382   2008.9

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  • Anodic oxidation of titanium by polarity inversion in calcium phosphate solution : Effect of current density on the kind of deposited calcium phosphates and their size

    OKAWA S., HOMMA K., KANATANI M., WATANABE K.

    Journal of the Japanese Society for Dental Materials and Devices   27 ( 5 )   418 - 418   2008.9

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  • P-9 Anodic oxidation of Nb, Ta and Zr by polarity inversion : Effect of pH of electrolyte on morphology of deposited calcium phosphate

    OKAWA S., HOMMA K., NAKANO S., KANATANI M., WATANABE K.

    Journal of the Japanese Society for Dental Materials and Devices   27 ( 2 )   144 - 144   2008.3

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  • P-46 Anodic oxidation of Ni-Ti orthodontic wire in calcium hydroxide solution

    HOMMA K., OKAWA S., KANATANI M., WATANABE K.

    Journal of the Japanese Society for Dental Materials and Devices   27   197 - 197   2008

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  • Effectivenss of workshop for dental technologists on postgraduate course : Based on questionnaire completed in 1st workshop of Niigata D. T. A., Niigata Branch Office

    28 ( 2 )   181 - 181   2007.12

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  • Number Projection of Fixed and Removable Dentures for Elderly and Dependent Elderly People

    10 ( 1 )   56 - 58   2007.12

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  • Efficiency of workshop for dental technologists' postgraduate course : Based on questionnaire completed in 1st workshop of Niigata D. T. A, Niigata Branch Office

    KANATANI M, OKADA N, TOBITA S, TANOKUCHI K, WAKASUGI J

    29   75 - 75   2007.9

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  • Retention Force of Mesiodistal Clasp Using Thin Wires : For Removable Partial Dentures for Upper Central Incisors

    KANATANI M, KUMAKURA K, NOMURA A

    51 ( 116 )   124 - 124   2007.5

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  • Surface modification of methacrylate resin through Electron beam irradiation : Elution test of residual monomer and surface Analysis

    ISHIKAWA S., NOMURA A., ITO K., SANO Y., OKAWA S., KANATANI M.

    Journal of the Japanese Society for Dental Materials and Devices   26 ( 2 )   166 - 166   2007.4

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  • Anodic oxidation of Ni-Ti orthodontic wire in NaOH solution

    HOMMA K., WATANABE K., OKAWA S., KANATANI M., MIYAKAWA O.

    Journal of the Japanese Society for Dental Materials and Devices   26 ( 2 )   141 - 141   2007.4

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  • Anodic oxidation of Nb, Ta, Ti and Zr in phosphoric acid by polarities inversion : XPS study of anodic films

    OKAWA S., HOMMA K., NAKANO S., KANATANI M., WATANABE K., MIYAKAWA O.

    Journal of the Japanese Society for Dental Materials and Devices   26 ( 2 )   154 - 154   2007.4

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  • Evaluation of the retention force of the suprabulge-type mesiodistal clasp using wires less than 0.7mm in diameter : For removable partial dentures for upper central incisors Reviewed

    KANATANI Mitsugu, KUMAKURA Kikuo, NOMURA AKIKO

    27 ( 2 )   83 - 89   2006.12

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  • Plan and devices in workshop for dental technologists' postgraduate course : Based on 1st workshop of Niigata D. T. A, Niigata Branch Office

    27 ( 2 )   151 - 151   2006.12

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  • Plan and Review of "The 1st Workshop of Postgraduate Course in 2005 Business Year by Niigata Dental Technologists Association, Niigata Branch Office"

    34 ( 5 )   646 - 648   2006.12

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  • Surface properties of dental implants (Part 4) : Surface analysis of grooved titanium implant extracted from rat bone

    WATANABE K., NOMURA S., OKAWA S., KANATANI M., NAKANO S., KOBAYASHI M., MIYAKAWA O.

    Journal of the Japanese Society for Dental Materials and Devices   25 ( 5 )   319 - 319   2006.9

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  • Retention force of suprabulge type clasp using Co-Cr wires less than 0.7mm diameter in facies approximalis of abutment teeth : For removable partial dentures for upper central incisor

    KANATANI M., KUMAKURA K., NOMURA A., NAKANO S., OKAWA S., WATANABE K., MIYAKAWA O.

    Journal of the Japanese Society for Dental Materials and Devices   25 ( 5 )   453 - 453   2006.9

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  • XPS analysis of nano-particles deposited by anodic oxidation of titanium in solution containing Ca and P

    OKAWA S., NAKANO S., KANATANI M., WATANABE K., MIYAKAWA O.

    Journal of the Japanese Society for Dental Materials and Devices   25 ( 5 )   428 - 428   2006.9

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  • The Deterioration of the Surface of Dental Burs by Washing and Sterilization Reviewed

    TOGAWA Noriko, KATO Kazumasa, KANATANI Mitsugu, KOBAYASHI Masayoshi

    The Japanese journal of medical instrumentation   75 ( 7 )   375 - 380   2005.7

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    Recently, the number of accidents, involving dental bur break has increased in our hospital. It has been thought that one of the causes of the accident might be the deterioration of dental burs by the repeated washing and sterilizing. Purpose : This study aims to clarify the cause of the deterioration of dental burs in the process of washing or sterilizing. Materials and methods : The burs examined were the Zekrya burs made of tungsten carbide. The burs were washed by ultrasonic cleaner or by washer-disinfector, or sterilized by autoclave or by the HPDS (Hydrogen peroxide/Plasma Discharging Sterilization at low temperature). After repeating the washing or sterilizing process 30 times, the surface of each bur was observed by the EPMA (Electron Probe Micro-Analyzer) by 7,000-time magnification. Results: 1. The EPMA analysis showed that the surfaces of the blade of the dental burs treated by the HPDS contained many cracks. 2. The surfaces of the blade of the dental burs that were treated by the autoclave showed a porous aspect. 3. Ultrasonic cleaner and washerdisinfector did not influence the surfaces of the blade of the dental burs. 4. At macroscopic level, the level of the surface deterioration may be distinguished by the darkening tendency of the bur's color.

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  • Analysis of Re-used Dental Burs’ Surface after Repeated Sterilization "jointly worked"

    Journal of Dental Research   84 ( Special Issue )   in press   2005

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  • Design and fabrication of a partial denture with combined use of 0.6mm diameter Co-Cr alloy proximal face clasps and akers clasps

    26 ( 2 )   201 - 201   2005

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  • 器材の取扱い方の教育に資するデータ収集―練和器具に付着した水滴量とその影響―(共著)

    日本歯科技工学会雑誌   26 ( 2 )   266   2005

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  • Ca,Pを含む溶液中でのチタンの陽極酸化―析出するリン酸カルシウムの形態―(共著)

    歯科材料・器械   24 ( 5 )   321   2005

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  • より細いCo-Cr合金線を用いた維持装置による審美的でコンパクトな義歯の設計と製作法(共著)

    日本歯科技工学会雑誌   26 ( 2 )   278   2005

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  • 歯科インプラントの表面特性について(第三報)―ラット骨内から摘出されたチタン鏡面試料の表面分析―(共著)

    歯科材料・器械   24 ( 5 )   278   2005

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  • 高熱伝導性を有するセラミックス鋳型によるチタン鋳造の可能性―hBN板を用いた高温鋳型の場合―(共著)

    歯科材料・器械   24 ( 5 )   309   2005

  • リン酸カルシウム水溶液中で電極交互交換法により陽極酸化したチタン酸化皮膜の構造(共著)

    チタンと歯科臨床   3 ( 1 )   71   2005

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  • Analysis of Re-used Dental Burs’ Surface after Repeated Sterilization "jointly worked"

    Journal of Dental Research   84 ( Special Issue )   印刷中   2005

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  • ラット骨内に埋入・摘出されたチタン表面のXPS分析(共著)

    チタンと歯科臨床   3 ( 1 )   39   2005

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  • 0.7 mmφ以下の細いCo-Cr合金線を使用した近遠心鉤義歯(共著)

    高見 大介, 野村 章子, 熊倉 喜久夫, 金谷 貢

    明倫歯科保健技工学雑誌   8 ( 1,95 )   95 - 95   2005

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  • チタン修復物の歯ブラシ摩耗面の化学性状と摩耗粉中のチタンの化学結合状態(共著)

    平成15年度~平成16年度文部科学省科学研究費補助金(基盤研究(C)(2))研究成果報告書(課題番号14571842)   2005

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  • Surface properties of dental implants (Part 3) : Surface analysis of polished titanium implant extracted from rat bone

    WATANABE K., HASHIMOTO A., NOMURA S., ENDO M. M., OKAWA S., KANATANI M., NAKANO S., MIYAKAWA O.

    Journal of the Japanese Society for Dental Materials and Devices   24 ( 5 )   278 - 278   2005

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  • Surface properties of electrochemically buffed titanium casting

    S Okawa, A Hossain, M Kanatani, K Watanabe, O Miyakawa

    DENTAL MATERIALS JOURNAL   23 ( 4 )   504 - 511   2004.12

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    Electrochemical buffing, a combined process of electrochemical and mechanical polishing, was applied to titanium casting. Mixture of alpha-Al2O3 suspension (average grain diameter of 5 mu m) and 5% KNO3 solution was used as abrasive slurry. Specimen and experimental wheel buff were respectively connected to the positive and negative poles of a DC source, whose potential ratings ranged from 0 V (MEP) to 10 V (ECB10). Surface roughness, hardness, color, and cleanness were investigated. ECB10 surface produced a gold color and attained a mirror finish, as its roughness value was only one-quarter that of MEP. High amount of aluminum was present in MEP surface. Its bond state entirely differed from that of alpha-Al2O3, hence indicating surface alteration due to chemical reactions with the abrasive material. At higher potentials, reaction products might be dissolved anodically, so that the surface was chemically clean to some extent. The surface also became rich in OH-.

    DOI: 10.4012/dmj.23.504

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  • Surface properties of electrochemically buffed titanium casting. Reviewed

    Seigo Okawa, Awlad Hossain, Mitsugu Kanatani, Kouichi Watanabe, Osamu Miyakawa

    Dental materials journal   23 ( 4 )   504 - 11   2004.12

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    Electrochemical buffing, a combined process of electrochemical and mechanical polishing, was applied to titanium casting. Mixture of alpha-Al2O3 suspension (average grain diameter of 5 microm) and 5% KNO3 solution was used as abrasive slurry. Specimen and experimental wheel buff were respectively connected to the positive and negative poles of a DC source, whose potential ratings ranged from 0 V (MEP) to 10 V (ECB10). Surface roughness, hardness, color, and cleanness were investigated. ECB10 surface produced a gold color and attained a mirror finish, as its roughness value was only one-quarter that of MEP. High amount of aluminum was present in MEP surface. Its bond state entirely differed from that of alpha-Al2O3, hence indicating surface alteration due to chemical reactions with the abrasive material. At higher potentials, reaction products might be dissolved anodically, so that the surface was chemically clean to some extent. The surface also became rich in OH-.

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  • 洗浄・滅菌処理による歯科用バーの表面劣化(共著)

    新潟県中材業務研究会第30回研究会誌   17 - 21   2004

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  • 市販インプラント・フィクスチャー部の表面構造について(共著)

    チタンと歯科臨床(歯科チタン学会雑誌)   2 ( 1, 57 )   2004

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  • 洗浄・滅菌処理による歯科用バーの表面劣化(共著)

    新潟歯学会誌   34 ( 1 )   73 - 74   2004

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  • 歯科における切削バーの管理方法について -各種洗浄、滅菌によるバーの劣化の比較-(共著)

    第58回日本口腔科学会総会プログラム・抄録集   279   2004

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  • 残存歯や歯周組織に優しく,審美的でコンパクトな義歯の歯科理工学的設計基準(共著)

    野村章子

    日本歯科医師会雑誌   57 ( 4,374 )   374 - 374   2004

  • 高熱伝導性セラミックス鋳型によるチタン鋳造の可能性(共著)

    歯科材料・器械   23 ( 5,362 )   2004

  • Ca,Pを含む溶液中でのチタンの陽極酸化 -低電圧で陽極酸化した場合の酸化皮膜の構造-(共著)

    歯科材料・器械   23 ( 5,363 )   2004

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  • 窒化物セラミックスによるコバルト-クロム合金鋳造体と作業能率の改善 -鉄,ステンレス鋼の鋳造とルツボへの応用も視野に入れて-

    平成16年度新潟大学シーズプレゼンテーション抄録   ( ,31-36 )   2004

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  • 歯科インプラントの表面特性について(第二報) -ラット骨内埋入・摘出チタン試料の表面分析-(共著)

    歯科材料・器械   23 ( 5,329 )   2004

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  • Pressure Behavior of the Mold Cavity in a Differential Pressure Casting Unit with Two Chambers -Influence of Mold Temperature, Mold Size and Crucible Conditions- Reviewed

    OKAWA Seigo, KANATANI Mitsugu, WATANABE Kouichi, NAKANO Syuji, MIYAKAWA Osamu

    The Journal of the Japanese Society for Dental Materials and Devices   23 ( 1 )   1 - 7   2004

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    In a two-chamber pressure-casting system, the rate of casting pressure increase depends on the exhausting rate of argon gas in the mold. The purpose of this study was to measure the pressure change in a mold cavity after the start of casting and to investigate the influence of mold temperature and thickness on the initial rate and later value of casting pressure. Moreover, a new casting mold with an experimentally improved crucible was proposed and its influence on the casting pressure was also investigated. Regardless of crucible condition, the initial rate of casting pressure decreased with mold temperature and thickness. Although the difference in crucible condition did not significantly influence the initial rate, the improved crucible increased the later value of casting pressure.

    DOI: 10.18939/jjdm.23.1_1

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  • Evaluation of the retention force of thin Co-Cr wrought wires (less than 0.7mm diameter) : Effect of wire diameter, clasp arm length and undercut depth in case of premolars

    25 ( 2,291 )   291 - 291   2004

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  • Densification of educational contents used presentation system composed of pen tablet and LCD projector : In case of education on dental technology

    25 ( 2,307 )   307 - 307   2004

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  • 再生器材の洗浄,滅菌方法について-歯科用切削バーの劣化の比較-(共著)

    戸川 紀子, 加藤 一誠, 金谷 貢

    医科器械学   74 ( 4 )   81 - 617   2004

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  • Prospective Demand for Fixed and Removable Dentures for Elderly and Dependent Elderly People in Japan Invited Reviewed

    Mitsugu KANATANI, Osamu MIYAKAWA, Noriyasu HOTTA

    Dentistry in Japan   39   63 - 66   2003.12

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  • Properties of AlN powders synthesized by rapid nitridation of Al powder in floating system

    N Hotta, M Kanatani, R Yonezawa, K Yanagita, T Tobitsuka, T Watanabe

    THERMEC'2003, PTS 1-5   426-4   4245 - 4250   2003

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    Synthesis method of fine and pure AlN powder from Al powder by means of floating-type fluidized-bed was investigated. Concentration of oxygen and water vapor in reacting nitrogen was carefully controlled in. the range 4 to 600 ppm. Ultrapure Al powder as a raw material was continuously fed into nitrogen stream with a flow rate of 1.6 cm/s from the end of the reactor, and was nitrided, at 1550 degreesC. AN powders which were nitrided in nitrogen containing oxygen and/or water vapor in the range 50 to 100 ppm, were considered to be suitable for fabrication of high thermal conductive ceramics, because the resulting AN powders were perfectly nitrided and the color of them was pure white indicating the powders being ultrapure. The amounts of impurities such as metals and oxygen context in the powders were extremely low. The powders were composed of primary particles with 0.1 to 0.2 mm in size and specific surface areas of them were 10.0 m(2)/g. The formation process of the fine AlN powder was presumed to be constituted of several elementary reaction steps involving explosive and combustive nitridation of Al particles. The AN powder had good sinterability, and high thermal conductive AlN ceramics with value of 255 W/mK could be obtained by sintering at 1900 degreesC for 32 hours in a nitrogen with aid of 3wt% to 5 wt% Y2O3. Neither pore nor precipitation of the second phase was observed at the gram boundary, and then the extensive gram growth was observed.

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  • Prospective Demand for Fixed and Removable Dentures for Elderly and Dependent Elderly People in Japan "jointly worked"

    Dentistry in Japan   39   63 - 66   2003

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  • Preparation of Translucent Magnesium Oxide Ceramics "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   90   2003

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  • Low Temperature Sintering of Fine AlN Powder Synthesized by Floating-Type Rapid Nitridation of Al Powder "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   50   2003

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  • Preparation of Transparent AlON Ceramics and Their Properties "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   50   2003

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  • 歯科用レジンと歯科用合金の接着強さ 第一報(共著)

    歯科材料・器械   22 ( 5 )   446   2003

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  • Preparation of Transparent Yttrium Oxide Ceramics by HIP Sintering "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   90   2003

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  • Setting Expansion Pressure of Alpha-Calcium Sulfate Hemihydrate "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   303   2003

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  • Synthesis of Flake-Like TiN Powders by Floating-Type Reduction-Nitridation "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   66   2003

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  • 直接測定法による硬質せっこうの硬化膨張圧(共著)

    歯科材料・器械   22 ( 2 )   152   2003

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  • Evaluation of the retention force of thin Co-Cr wrought wires (less than 0.7 mm diameter) : Effect of diameter of wire, undercut depth and clasp arm length

    24 ( 2 )   314 - 314   2003

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  • 歯科インプラントの表面特性について 第1報 各種市販インプラントの表面特性について(共著)

    歯科材料・器械   22 ( 2 )   109   2003

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  • チタンのケミカルメカニカルポリシング―酸化剤を添加したスラリーの研磨面性状への影響―(共著)

    歯科材料・器械   22 ( 2 )   133   2003

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  • チタンのケミカルメカニカルポリシング(共著)

    チタンと歯科臨床(歯科チタン学会雑誌)   46   2003

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  • 細いCo-Cr合金線を使用したクラスプの少数歯中間欠損症例への応用(共著)

    日本歯科技工学会雑誌   24 ( 2 )   315   2003

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  • 酸化剤を添加したスラリーによるチタンのケミカルメカニカルポリシング―研磨面のXPS分析―(共著)

    歯科材料・器械   22 ( 5 )   366   2003

  • Preparation of Transparent Yttrium Oxide Ceramics by HIP Sintering "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   90   2003

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  • Setting Expansion Pressure of Alpha-Calcium Sulfate Hemihydrate "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   303   2003

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  • Synthesis of Flake-Like TiN Powders by Floating-Type Reduction-Nitridation "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   66   2003

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  • Preparation of Translucent Magnesium Oxide Ceramics "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   90   2003

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  • Low Temperature Sintering of Fine AlN Powder Synthesized by Floating-Type Rapid Nitridation of Al Powder "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   50   2003

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  • Preparation of Transparent AlON Ceramics and Their Properties "jointly worked"

    The 5th International Meeting of Pacific Rim Ceramic Societies Abstract Book   50   2003

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  • Pressure Behavior in Mold Cavity during Titanium Casting : Differential Pressure Casting Unit with Two Chambers Reviewed

    OKAWA Seigo, KANATANI Mitsugu, WATANABE Kouichi, NAKANO Syuji, MIYAKAWA Osamu

    The Journal of the Japanese Society for Dental Materials and Devices   22 ( 1 )   37 - 44   2003

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    Since the mold cavity is exposed to the melting chamber in a two-chamber casting unit, the cavity is filled with Ar gas till casting of molten titanium. Thus, the gas evacuation rate immediately after melt casting must influence the castability and generation of internal defects. In this study, the cavity pressure was measured using a mold simulating a two-chamber casting process at room temperature and the results were converted into the casting pressure. Mold permeability and preset pressures in the melting and casting chambers were considered as factors influencing the quality of casting. The higher the mold permeability and the higher the difference between the preset pressures, the higher level the casting pressure rapidly reached. The results suggested that the choice of investment material should be made from the perspective of mold permeability suitable to the casting mechanism.

    DOI: 10.18939/jjdm.22.1_37

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  • Setting Expansion Pressure of Dental Plaster and Stone by Direct Measurement "jointly worked"

    Transactions of the Fouth International Congress on Dental Materials   280   2002

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  • Quick Identification of Restoration Components Causing Metal Allergy by Microscopic X-ray Fluorescence Analysis "jointly worked"

    Transactions of the Fourth International Congress on Dental Materials   290   2002

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  • Retention force of thin RPD Co-Cr Wire Clasps "jointly worked"

    Abstracts of Papers for Japanese Association for Dental Research 50th Annual Meeting   117   2002

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  • Quick Identification of Restortion Components Causing Metal Allergy by Microscopic X-ray Fluorescence Analysis(共著)

    Transactions of the Fourth International Congress on Dental Materials   290   2002

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  • 遠心鋳造によるTi-6Al-7Nbのマクロ偏析(共著)

    歯科材料・器械   21 ( 特40 )   110   2002

  • 0.7mmf以下の細いCo-Cr合金線をしよしたクラスプの維持力―上顎中切歯1歯欠損に対応する可撤性義歯への応用に関して―(共著)

    熊倉喜久夫

    新潟歯学会雑誌   32 ( 2 )   335 - 335   2002

  • チタンのケミカルメカニカルポリシング―研磨圧とスラリーpHの研磨面性状への影響―(共著)

    歯科材料・器械   21 ( 特40 )   105   2002

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  • Retention force of thin RPD Co-Cr wire clasps

    NOMURA A.

    J Dent Res   82   117 - 401   2002

  • Setting Expansion Pressure of Dental Plaster and Stone by Direct Measurement(共著)

    Transactions of the Fourth International Congress on Dental Materials   280   2002

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  • チタン歯科鋳造の現状 鋳造機の特徴と利用技術

    渡辺孝一, 大川成剛, 金谷 貢, 宮川 修

    新潟歯学会雑誌   31 ( 2 )   129 - 139   2001.12

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  • Number Projection of Bridges and Dentures for Elderly and Dependent Elderly People Reviewed

    KANATANI Mitsugu, WATANABE Kouichi, MIYAKAWA Osamu

    Journal of Prosthodontic Research   45 ( 2 )   227 - 237   2001.12

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    Purpose: To help frame long-range programs for education, research, and clinics on bridges and dentures, we estimated the numbers of these prosthetic appliances that will be needed in the future.<BR>Methods: People of age 65 and above, including dependent elderly, were investigated. The average numbers of these appliances per person were estimated by regression analysis based on survey reports of dental diseases. Several regression lines were corrected so that mutual intersections would not occur between age groups and the estimated value would not exceed each upper limit. The total numbers of these appliances in the future were calculated from the estimated average numbers and population projections.<BR>Results: It was projected that the numbers of bridges and dentures used by the elderly would increase 2.0 times (2.2-1.1 times, by 95% confidence interval) and 1.5 times (1.8-1.0 times) in 20 years, respectively, and plateau during the subsequent 10 years. The older the age group was, the higher these rates of increase would become. The numbers of bridges and dentures for dependent elderly people were also estimated to increase 2.7 times (3.2-1.0 times) and 1.8 times (2.2-1.0 times) in 25 years, respectively.<BR>Conclusions: We will be faced with the importance of dental education, research, and clinics on bridges and dentures for the elderly and dependent elderly people.

    DOI: 10.2186/jjps.45.227

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  • Number Projection of Bridges and Dentures on the Elderly or Elderly People with Disabilities

    61 ( 6 )   91 - 96   2001.12

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  • チタン歯科鋳造の現状 : 鋳造機の特徴と利用技術 Reviewed

    Watanabe Kouichi, Okawa Seigo, Kanatani Mitsugu

    Niigata dental journal   31 ( 2 )   1 - 11   2001.12

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  • Mechanism of Internal Porosity Formation in Pressure-reduced Cavity: An Improved Sprue Design can Eliminate Such Porosity "jointly worked"

    Proceedings The 5th International Symposium on Titanium in Dentistry   70   2001

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  • Pressure Begavior in the Mold Cavity at Different Temperatures:A Two-chamber Casting Unit "jointly worked"

    Proceedings The 5th International Symposium on Titanium in Dentistry   69   2001

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  • Partition Technique for Titanium Pressure Casting Unit "jointly worked"

    Journal of Dental Research   80 ( Special Issue )   561   2001

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  • Future Demand of Prosthetic Appliances on the Elderly in Japan "jointly worked"

    Journal of Dental Research   80 ( Special Issue )   564   2001

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  • 二室加圧型鋳造機における鋳造時の鋳型空洞の圧力挙動-鋳型温度の影響-(共著)

    歯科材料・器械   20 ( 特37 )   55   2001

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  • Partition Technique for Titanium Pressure Casting Unit(共著)

    Journal of Dental Research   80 ( Special Issue )   561   2001

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  • 圧力遮蔽箔を用いたチタン用二室加圧型鋳造機の特性-スプルー設計と内部欠陥との関係-(共著)

    歯科材料・器械   20 ( 特37 )   107   2001

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  • Fitness on denture and relining using light-curing base resin : Comparison with conventional method and consideration on deformation

    KANATANI M., OKAWA S., WATANABE K., NAKANO S., MIYAKAWA O., HOTTA N.

    20 ( 特37 )   46 - 46   2001

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  • 直接的測定法による硫酸カルシウム半水和物の凝結膨張圧(共著)

    平成13年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   12   2001

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  • 流動層と充填層を併用したAl粉末の窒化反応と生成粉末の特性(共著)

    平成13年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   104   2001

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  • Mechanism of Internal Porosity Formation in Pressure-reduced Cavity:An Improved Sprue Design can Eliminate Such Porosity(共著)

    Proceedings The 5th International Symposium on Titanium in Dentistry   70   2001

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  • High-speed detection method of metallic elements of dental restoration from allergy suspected patients : part 2, Systematic deviation due to a small amount of sample and the solution

    WATANABE K., HONMA H., OKAWA S., KANATANI M., NAKANO S., MIYAKAWA O., HASHIMOTO A., KOBAYASHI M.

    20 ( 特38 )   132 - 132   2001

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  • Future Demand of Prosthetic Appliances on the Elderly in Japan(共著)

    Journal of Dental Research   80 ( Special Issue )   564   2001

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  • Pressure Behavior in the Mold Cavity at Different Temperatures:A Two-chamber Casting Unit(共著)

    Proceedings The 5th International Symposium on Titanium in Dentistry   69   2001

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  • Number Projection of Bridges and Dentures on the Elderly and Dependent Elderly People

    Kanatani Mitsugu, Miyakawa Osamu

    30 ( 2 )   57 - 58   2000.12

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  • Pressure Behavior in the Cavity on Casting - An Enclosed One-chamber Casting Unit - Reviewed

    OKAWA Seigo, WATANABE Kouichi, KANATANI Mitsugu, NAKANO Syuji, MIYAKAWA Osamu

    Journal of the Japanese Society for Dental Materials and Devices   19 ( 1 )   108 - 114   2000.1

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    This study evaluated the pressure behavior of both the casting chamber and the cavity in the mold using an enclosed one-chamber casting unit. An experimental device with a pressure sensor modeled on the casting system was attached to the casting unit. The chamber pressure rose rapidly and reached half of the preset casting pressure within 0.2s after introducing argon gas into the chamber. Both the preset casting pressure and the gas permeability in the mold strongly influenced the differential pressure between the chamber and the cavity. When a mold with a high level of rising pressure in the cavity, i.e.a mold with higher gas permeability, was used, a large quantity of argon gas penetrated the cavity through the mold wall before the cavity was filled by the molten metal. For this reason, it was thought that some casting defects, such as incomplete casting or gas inclusion, often occur. This study showed that it is desirable to use a mold with lower gas permeability in an enclosed one-chamber casting unit.

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  • ハンクス溶液中に浸漬したチタンミニプレートの表面分析(共著)

    第13回歯科チタン研究会講演抄録集   42 - 43   2000

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  • New Partition Technique for Two-chamber Pressure Casting Unit for Titanium

    Kouichi Watanabe, Seigo Okawa, Mitsugu Kanatani, Seruji Nakano, Osamu Miyakawa, Masayoshi Kobayashi

    Dental Materials Journal   19 ( 3 )   307 - 316   2000

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    Although titanium has been widely used in prosthetic appliances, such as cast removable partial denture frameworks, high quality castings are still difficult to obtain. This study proposes a new partition technique using a metal foil for improving castability of a two-chamber pressure casting unit. The metal foil was formed beforehand to bring it in contact with the mold rucible wall so that no clearance was left behind it. Using this formed foil, the mold cavity can be completely isolated from the upper chamber and can be maintained in a vacuum even after the rupture of the foil. Accordingly, a large casting force is generated very quickly, and as a result, castability is expected to be significantly improved. This expectation was confirmed by the experiments using wax patterns including thin plate and mesh plate.

    DOI: 10.4012/dmj.19.307

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  • New Partition Technique for Two-chamber Pressure Casting Unit for Titanium

    Kouichi Watanabe, Seigo Okawa, Mitsugu Kanatani, Seruji Nakano, Osamu Miyakawa, Masayoshi Kobayashi

    Dental Materials Journal   19 ( 3 )   307 - 316   2000

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    Although titanium has been widely used in prosthetic appliances, such as cast removable partial denture frameworks, high quality castings are still difficult to obtain. This study proposes a new partition technique using a metal foil for improving castability of a two-chamber pressure casting unit. The metal foil was formed beforehand to bring it in contact with the mold rucible wall so that no clearance was left behind it. Using this formed foil, the mold cavity can be completely isolated from the upper chamber and can be maintained in a vacuum even after the rupture of the foil. Accordingly, a large casting force is generated very quickly, and as a result, castability is expected to be significantly improved. This expectation was confirmed by the experiments using wax patterns including thin plate and mesh plate.

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  • 金属アレルギー診断のための口腔内金属迅速分析法(共著)

    歯科材料・器械   19 ( 特36 )   27   2000

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  • 高齢者および要援護高齢者に関わるブリッジ数と有床義歯数の将来推計(共著)

    日本補綴歯科学会雑誌   44 ( 特104 )   214   2000

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  • チタン用二室型加圧鋳造機を使用する際の内部欠陥の原因と対策(共著)

    歯科材料・器械   19 ( 特35 )   41   2000

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  • 鋳造時の鋳型空洞の圧力挙動-二室加圧型鋳造機の場合-(共著)

    歯科材料・器械   19 ( 特36 )   78   2000

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  • 二室型加圧鋳造機における鋳造欠陥軽減のためのテクニック(共著)

    渡辺孝一

    第13回歯科チタン研究会講演抄録集   8 - 9   2000

  • 解説 浮上法による窒化アルミニウムの合成と粒子形態制御 (窒化アルミニウム粉末合成と焼結体の高性能化) Reviewed

    堀田 憲康, 大嶋 貴弘, 金谷 貢

    材料科学   37 ( 2 )   59 - 64   2000

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  • Partial Deformation and Castability of Castings by Cast-on Technique Using Gold Alloy

    24 ( 11 )   1451 - 1458   1999.12

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  • 電解複合研磨用の導電性ポイントの試作(共著)

    歯科材料・器械   18 ( 特33 )   66   1999

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  • A New Investment Containing Stabilized Zirconia-Capsuled Quartz for Titanium Casting : Mechanical Properties and Surface Reaction Layers of Casting Reviewed

    OKAWA Seigo, WATANABE Kouichi, KANATANI Mitsugu, NAKANO Syuji, MIYAGAWA Osamu, KOBAYASHI Masayoshi

    The Journal of the Japanese Society for Dental Materials and Devices   18 ( 4 )   287 - 294   1999

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    A non-phosphate bonded investment including quartz capsuled with stabilized zirconia was developed for casting titanium. The mechanical properties of castings were compared between the experimental investment and a commercially available phosphate-bonded silica investment. The tensile strength values were almost the same for both castings, while the elongation was higher than that of castings from the commercial investment. Although the inner hardness was almost the same for both castings, the hardness in the surface layer was lower. The reaction layer of the casting was clearly thinner. These results suggested that the capsulizing zirconia significantly reduced the reaction of molten titanium with silica, which improved the quality of titanium casting.

    DOI: 10.18939/jjdm.18.4_287

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  • 高齢者および在宅歯科医療のための材料・術式の研究開発に関する一考察 -喪失歯牙補綴物の将来推計量からみた必要性-(共著)

    金谷 貢, 大川 成剛, 渡辺 孝一, 中野 周二, 宮川 修, 小林 正義

    歯科材料・器械   18 ( 特33 )   79 - 79   1999

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  • 喪失歯に対する補綴物数の将来推計において回帰分析に補正を加えた場合の予測(共著)

    歯科材料・器械   18 ( 特34 )   178   1999

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  • 窒化物セラミックスによる歯科鋳造の改善-金銀パラジウム合金への大気中での応用を中心に-

    新潟大学歯学部歯科補綴学第1講座30周年記念誌   75 - 80   1999

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  • チタン用加圧鋳造機で現れる実質鋳造力の理論的検討(共著)

    歯科材料・器械   18 ( 特34 )   212   1999

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  • Partial Deformation of the Casting and Castability on Double Casting Method Using Gold Alloy Reviewed

    KANATANI Mitsugu, HOTTA Noriyasu, KOHNO Shoji

    Journal of Prosthodontic Research   42 ( 2 )   271 - 278   1998.12

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    Double casting method (cast on technique) is sometimes used for attachment work. As to this method, the present study was conducted to investigate the partial deformation of casting and the castability of the second casting. A wax sheet stuck on the first cast plate of a gold alloy was invested with a gypsum-bonded investment. Using a centrifugal casting machine, two kinds of alloy were cast in the mold heated to 700°C: one was the same alloy as the first casting and the other was a silver-palladium-gold alloy.<BR>Protuberances on the first casting and the corresponding concaves on the second casting were found approximately beneath the sprue. Some protuberances appeared to be wavy, while the others appeared to be hemispherical, with a maximum height of 220μm. There were no differences in the size and shape of crystal grain as well as the composition between the protuberance and the body of the first casting. Therefore, the protuberances did not result from the adhesion of the molten metal to the first casting, but from the partial deformation of the first casting. In case of using a silver-palladium-gold alloy for the second casting, some of the first castings had concavities.<BR>The castability of the second casting was significantly low, compared with general casting.

    DOI: 10.2186/jjps.42.271

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  • Synthesis of Aluminium Nitride Whiskers and Their Properties Reviewed

    N. HOTTA, K. FUKUI, Y. FURUKAWA, K. TAWARAGI, M. KANATANI, T. MEGURO, K. KOMEYA

    Journal of the Australasian Ceramic Society   34 ( 2 )   66 - 71   1998.12

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  • 直接窒化法で合成したAlN粉末からの透光性ALONの作製(共著)

    平成10年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   64 - 65   1998

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  • 適正な加熱膨張を確保するためのリングファーネスの設定温度と係留時間(共著)

    日本歯科技工学会雑誌   19 ( 1 )   112   1998

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  • Effect of replacing residual gas with Ar gas in mold for titanium casting(共著)

    4th International Symposium on Titanium in Dentistry ABSTRACTS   19   1998

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  • アルゴン雰囲気溶解におけるCo-Cr合金とMgOの反応(共著)

    歯科材料・器械   17 ( 特31 )   59   1998

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  • Casting plan to reduce large internal porosities using pressure casting machines for titanium

    WATANABE K., OKAWA S., KANATANI M., NAKANO S., MIYAGAWA O., KOBAYASHI M.

    17 ( 特31 )   93 - 93   1998

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  • チタンと白金加金の真空雰囲気下における電気炉内ろう付の可能性(共著)

    第11回歯科チタン研究会講演抄録集   64 - 65   1998

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  • Properties of AlN Powders Stnthesized by Nitridation of Al Powder in Floating System(共著)

    Abstracts INTERNATIONAL SYMPOSIUM ON ALUMINUM NITRIDE CERAMICS   7   1998

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  • Synthesis of Aluminium Nitride Whiskers and Their Properties "jointly worked"

    Journal of the Australasian Ceramic Society   34 ( 2 )   66 - 71   1998

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  • クラウン・ブリッジのチタン鋳造におけるランナーバーの役割(共著)

    渡辺孝一

    第11回歯科チタン研究会講演抄録集   24 - 25   1998

  • 導電性ポイントによるチタンの電解複合研磨(共著)

    大川成剛

    第11回歯科チタン研究会講演抄録集   48 - 49   1998

  • Surface Characterristics of Electro-Chemical Buffed Titanium Casting "jointly worked"

    4th International Symposium on Titanium in Dentistry ABSTRACTS   62   1998

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  • Partial Deformation and Castability of Castings by Cast-on Technique Using Gold Alloy(共著)

    Abstracts 3rd International Congress of Dental Technology   141   1998

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  • Partial Deformation and Castability of Castings by Cast-on Technique Using Gold Alloy "jointly worked"

    Abstracts 3rd International Congress of Dental Technology   141   1998

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  • Effect of replacing residual gas with Ar gas in mold for titanium casting "jointly worked"

    4th International Symposium on Titanium in Dentistry ABSTRACTS   19   1998

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  • 高熱伝導性AlNで封止した高速応答性熱伝対の作製(共著)

    平成10年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   62 - 63   1998

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  • Surface Characterristics of Electro-Chemical Buffed Titanium Casting(共著)

    4th International Symposium on Titanium in Dentistry ABSTRACTS   62   1998

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  • Effective Techniques to Reduce Internal Defects in Titanium Crown & Bridge Castings "jointly worked"

    4th International Symposium on Titanium in Dentistry ABSTRACTS   29   1998

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  • 生体親和性を考えたチタン-白金加金ハイブリッドフレームワークを目指したろう付法の研究(共著)

    平成10年度日本補綴歯科学会関越支部総会・学術大会プログラム   5   1998

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  • Prperties of AlN Powders Synthesized by Nitridation of Al Powder in Floating System "jointly worked"

    Abstracts INTERNATIONAL SYMPOSIUM ON ALUMINUM NITRIDE CERAMICS   7   1998

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  • Strength and element maps of titanium and gold-platinum joint soldered with gold solder under vaccum

    SAKANO T., HASEGAWA Y., KOHNO S., OKAWA S., KANATANI M., WATANABE K., MIYAKAWA O.

    17 ( 特32 )   143 - 143   1998

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  • Effective Techniques to Reduce Internal Defects in Titanium Crown & Bridge Castings(共著)

    4th International Symposium on Titanium in Dentistry ABSTRACTS   29   1998

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  • Experimental Study on the Anterior-Posterior Distribution of Bite Force as Measured by Dental Prescale -Investigation from Contact Force Distribution on an Experimental Model- Reviewed

    NOMURA Shuichi, KANATANI Mitsugu, KOHNO Shoji, KAMO Gohsuke, NAKANO Shuji, MIYAKAWA Osamu

    Journal of Prosthodontic Research   41 ( 4 )   710 - 718   1997.12

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    Bite force measurement on intercuspal clenching in normal subjects using the pressure sensitive sheet "Dental Prescale" showed that larger bite forces were applied to the posterior teeth than to the anterior teeth. In this study, an experimental model revealed that the even thickness of the pressure sensitive sheet was one of the influential factors in this characteristic distribution.<BR>The experimental model consisted of 14 steel ball-bearings, used as substitutes for the dentition, and a glass slab which were respectively mounted in the maxillary and mandibular elements of a semiadjustable articulator. Three kinds of loading conditions were determined and applied to the upper member with an Instron-type testing machine; then contact forces were compared with the Occluzer FPD-703. Firstly, the upper member was removed from the articulator and the pressure sensitive sheet was loaded directly. Secondly, the condylar elements of the articulator were locked through centric latches, and thirdly, the condylar elements were not locked.<BR>The direct load distributed contact forces almost equally to each steel ball. On the contrary, the load with locked condylar balls distributed larger contact forces to the posterior steel ball-bearings than to the anterior ones. However, the unlocked load showed a similar distribution to the direct load.

    DOI: 10.2186/jjps.41.710

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  • Synthesis and Sintering Behavior of AlN/YN Composite Powders by Floating-type Fluidized-bed CVD Reviewed

    34 ( 6 )   281 - 287   1997.12

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  • Mechanical Properties of Titanium Casting Prepared in Different Atmospheres Reviewed

    16 ( 4 )   330 - 334   1997.12

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  • 透光性AlNウィスカーの化学的性質(共著)

    平成9年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   88 - 89   1997

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  • 加圧鋳造機を用いた場合のクラウン・ブリッジ内のチタン湯流れ(共著)

    歯科材料・器械   16 ( 特30 )   97   1997

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  • Si粒子の浮上窒化法によるSi<sub>3</sub>N<sub>4</sub>粒子の生成機構(共著)

    平成9年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   6 - 7   1997

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  • 鋳型内のガスがチタン鋳造体に及ぼす影響(共著)

    歯科材料・器械   16 ( 特30 )   48   1997

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  • チタンの電解複合研磨について-市販のチタン用研摩材を用いた場合-(共著)

    歯科材料・器械   16 ( 特30 )   122   1997

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  • Titanium Flow in a Crown-bridge Cavity by Centrifugal Casting

    WATANABE K., OKAWA S., KANATANI M., NAKANO S., MIYAKAWA O., KOBAYASHI M.

    16 ( 特29 )   153 - 153   1997

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  • 電解複合研磨したチタン表面のXPSによる分析(共著)

    歯科材料・器械   16 ( 特29 )   55   1997

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  • 石こうの硬化膨張力に関する研究(共著)

    歯科材料・器械   16 ( 特29 )   69   1997

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  • 低純度Al粉末の窒化反応機構(共著)

    日本セラミックス協会1997年会講演予稿集   217   1997

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  • 直接窒化法で合成したAlN粉末の安定性に及ぼす反応ガス種の影響(共著)

    日本セラミックス協会1997年会講演予稿集   521   1997

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  • Surface Contamination of Titanium by Abrading Treatment(共著)

    Transactions Third International Congress on Dental Materials   137   1997

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  • Observation of Titanium Flow in Crown-bridge Cavity by Tracer(共著)

    Transactions Third International Congress on Dental Materials   336   1997

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  • 加圧鋳造による規格クラウン空洞内のチタン湯流れと内部欠陥(共著)

    第10回歯科チタン研究会講演抄録集   110 - 111   1997

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  • Observation of Titanium Flow in Crown-bridge Cavity by Tracer "jointly worked"

    Transactions Third International Congress on Dental Materials   336   1997

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  • Surface Contamination of Titanium by Abrading Treatment "jointly worked"

    Transactions Third International Congress on Dental Materials   137   1997

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  • 浮上窒化法と充填層窒化法の併用によるAlN粉末の合成(共著)

    日本セラミックス協会1997年会講演予稿集   216   1997

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  • CVD反応によるTiN微粒子の合成と複合材料への応用(共著)

    日本セラミックス協会1997年会講演予稿集   139   1997

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  • 直接窒化法で合成したAlN粉末の特性に及ぼす合成法の影響(共著)

    日本セラミックス協会1997年会講演予稿集   215   1997

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  • 電解複合研磨したチタン鋳造体の表面性状について(共著)

    第10回歯科チタン研究会講演抄録集   54 - 55   1997

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  • Possible Segregation Caused by Centrifugal Titanium Casting

    Kouichi Watanabe, Seigo Okawa, Mitsugu Kanatani, Syuji Nakano, Osamu Miyakawa, Masayoshi Kobayashi

    Dental Materials Journal   15 ( 2 )   212 - 219   1996.12

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    The possibility of the segregation under solidification process using a centrifugal casting machine was investigated using an electron probe microanalyzer with elemental distribution map, line analysis and quantitative analysis. When a very small quantity of platinum was added to local molten titanium during the casting process, macroscopic segregation was observed under conditions of density difference of 0.1g/cm3 at the most, confirming that the centrifugal force of the casting machine is extremely strong. When a Ti -6Al-4V alloy was cast, however, no macroscopic segregation was observed. The centrifugal force of the casting machine examined in the present study hardly results in the body-force segregation in this titanium alloy.

    DOI: 10.4012/dmj.15.212

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  • 純チタンとTi-6Al-4V合金の湯流れの相違点 Reviewed

    渡辺孝一, 大川成剛, 金谷 貢, 中野周二, 宮川 修, 小林正義

    歯材器   15 ( 2 )   137 - 145   1996.12

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    DOI: 10.18939/jjdm.15.2_137

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  • Molten Titanium Flow in U-type Cavity Reviewed

    15 ( 6 )   532 - 539   1996.12

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    DOI: 10.18939/jjdm.15.6_532

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  • Possible Segregation Caused by Centrifugal Titanium Casting

    Kouichi Watanabe, Seigo Okawa, Mitsugu Kanatani, Syuji Nakano, Osamu Miyakawa, Masayoshi Kobayashi

    Dental Materials Journal   15 ( 2 )   212 - 219   1996.12

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    The possibility of the segregation under solidification process using a centrifugal casting machine was investigated using an electron probe microanalyzer with elemental distribution map, line analysis and quantitative analysis. When a very small quantity of platinum was added to local molten titanium during the casting process, macroscopic segregation was observed under conditions of density difference of 0.1g/cm3 at the most, confirming that the centrifugal force of the casting machine is extremely strong. When a Ti -6Al-4V alloy was cast, however, no macroscopic segregation was observed. The centrifugal force of the casting machine examined in the present study hardly results in the body-force segregation in this titanium alloy.

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  • Surface Contamination of Titanium by Abrading Treatment

    Osamu Miyakawa, Kouichi Watanabe, Seigo Okawa, Mitsugu Kanatani, Syuji Nakano, Masayoshi Kobayashi

    Dental Materials Journal   15 ( 1 )   11 - 21   1996.6

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    This study investigated the contamination of abraded Ti surfaces. Using a polishing machine, specimens were abraded with waterproof SiC grit papers under water cooling. The abraded surfaces were examined using element analysis, X-ray diffraction, and hardness tests. Contaminant deposits with dimensions reaching about 30 μm were observed throughout the surface. In these deposits, Ti was apparently reduced by about 10% and replaced by Si and O. The chemical bond state of the Si was similar to that of SiC or a titanium suicide. The O was solute in Ti, which increased the surface hardness. The contaminant deposits were amorphous or very thin. The contamination of Ti, the extent of which was related to hardness, resulted from a reaction with abrasives.

    DOI: 10.4012/dmj.15.11

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  • Surface Contamination of Titanium by Abrading Treatment

    Osamu Miyakawa, Kouichi Watanabe, Seigo Okawa, Mitsugu Kanatani, Syuji Nakano, Masayoshi Kobayashi

    Dental Materials Journal   15 ( 1 )   11 - 21   1996.6

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    This study investigated the contamination of abraded Ti surfaces. Using a polishing machine, specimens were abraded with waterproof SiC grit papers under water cooling. The abraded surfaces were examined using element analysis, X-ray diffraction, and hardness tests. Contaminant deposits with dimensions reaching about 30 μm were observed throughout the surface. In these deposits, Ti was apparently reduced by about 10% and replaced by Si and O. The chemical bond state of the Si was similar to that of SiC or a titanium suicide. The O was solute in Ti, which increased the surface hardness. The contaminant deposits were amorphous or very thin. The contamination of Ti, the extent of which was related to hardness, resulted from a reaction with abrasives.

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  • チタンの電解複合研磨(ECB)について-研磨条件の違いによる仕上げ面粗さ-(共著)

    歯科材料・器械   15 ( 特27 )   226 - 227   1996

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  • キャストオンテクニックの金合金金型に発生した局所的隆起(共著)

    歯科材料・器械   15 ( 特27 )   88 - 89   1996

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  • 複雑キャビティ内のチタン湯流れ-U字型空洞内の湯流れ-(共著)

    歯科材料・器械   15 ( 特27 )   156 - 157   1996

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  • チタン仕上げ面の汚染(共著)

    第9回歯科チタン研究会講演抄録集   11 - 12   1996

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  • 電解複合研磨(ECB)によるチタン鋳造体の鏡面仕上げについて(共著)

    大川成剛

    第9回歯科チタン研究会講演抄録集   35 - 36   1996

  • 細いスプルーでの鋳込み過程とチタン湯流れ(共著)

    第9回歯科チタン研究会講演抄録集   7 - 8   1996

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  • 浮上式窒化法で合成したAlNの低温焼結と焼結体の特性(共著)

    平成8年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   80 - 81   1996

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  • デンタルプレスケールを用いた咬合力測定の基礎的検討(共著)-模型実験での接触力分布からの検討-

    日本補綴歯科学会雑誌   40 ( 特96 )   60   1996

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  • 金合金溶湯と接触する窒化物セラミックスの大気中での可能性(共著)

    歯科材料・器械   15 ( 特28 )   302 - 303   1996

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  • 単純化したクラウンタイプ空洞内のチタン湯流れ(共著)

    歯科材料・器械   15 ( 特28 )   306 - 307   1996

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  • 窒化物セラミックスの金銀パラジウム合金およびコバルトクロム合金鋳造への応用

    金谷 貢, 宮川 修, 河野正司, 堀田憲康

    新潟歯学会雑誌   25 ( 2 )   215 - 216   1995.12

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  • 一室加圧型チタン鋳造機に関する研究 第2報 鋳型通気性が鋳造欠陥に及ぼす影響 Reviewed

    渡辺孝一, 大川成剛, 金谷 貢, 中野周二, 宮川 修, 小林正義

    歯材器   14 ( 6 )   669 - 677   1995.12

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  • 窒化物セラミックの金銀パラジウム合金およびコバルトクロム合金鋳造への応用

    金谷 貢, 宮川 修, 河野 正司, 堀田 憲康

    新潟歯学会雑誌   25 ( 2 )   93 - 94   1995.12

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  • Study on the One Chamber Pressure Casting Machine for Titanium Part2 Influence of the Mold Permeability on Casting Defects

    WATANABE Kouichi, OKAWA Seigo, KANATANI Mitsugu, NAKANO Syuji, MIYAKAWA Osamu, KOBAYASHI Masayoshi

    Dent Mater J   14 ( 6 )   668 - 676   1995.11

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    Casting defects and titanium flow using a one-chamber pressure casting machine were observed by the transparent X-ray method and molten tracer element method, respectively.To clarify the relation between casting defects and filling types, three types of wax patterns were invested at one time.To estimate the influence of mold permaebility, three types of investment which significantly differed in permeability were used.As a result, investments with high permeability cause many internal defects in thick plate castings and external defects on thin plate castings and mesh castings.These defects were closely related to the flow in the cavity.Low permeable investment caused few casting defects despite the cavity type.

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    Other Link: http://search.jamas.or.jp/link/ui/1996110589

  • 歯科用金ろうによるチタンの真空炉内ろう付(共著)

    坂野智三

    第8回歯科チタン研究会講演抄録集   52 - 53   1995

  • 湯流れから見た純チタンとチタン合金の鋳造性の違い(共著)

    歯科材料・器械   14 ( 特26 )   318 - 319   1995

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  • ロータリーポンプによって得られる真空中での金ろうによるチタンの炉内ろう付けの可能性(共著)

    坂野智三

    新潟歯学会誌   25 ( 1 )   66 - 67   1995

  • 真空度と係留時間が金ろうによるチタンのろう付強さに及ぼす影響について(共著)

    日本補綴歯科学会雑誌   39 ( 特93 )   101   1995

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  • Synthesis of Pure AlN Powder by the Floating Nitridation Technique Reviewed

    Noriyasu HOTTA, Kouichiro FUKUI, Yuichi FURUKAWA, Satoshi KAMESHIMA, Isao KIMURA, Mitsugu KANATANI

    Journal of the Ceramic Society of Japan, International Edition   102   1034 - 1039   1994.12

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  • Application of Nitride Ceramics for Ag-Pd-Cu-Au Alloy Casting in Air Reviewed

    KANATANI Mitsugu

    The Journal of the Japanese Society for Dental Materials and Devices   13 ( 3 )   193 - 205   1994.3

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  • Synthesis of Pure AIN Powder by the Floating Nitrdation Technique "jointly worked"

    Journal of the Ceramic Society of Japan, International Edition   102   1034 - 1039   1994

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  • Synthesis of pure AlN powder by the floating nitridation technique

    Noriyasu Hotta, Kouichiro Fukui, Yuichi Furukawa, Satoshi Kameshima, Isao Kimura, Mitsugu Kanatani

    Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan   102 ( 11 )   1032 - 1036   1994

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    A pure AlN powder was synthesized continuously at 1150-1500 °C by the floating nitridation technique. The nitriding temperature was reduced about 200 °C by using N2 as floating gas for Al powder and injecting an N2/NH3 gas mixture at the center of the heating zone. The AlN powder obtained at 1300 °C had a size of about 10 μm and specific surface area of 24.2 m2/g. AlN particles were so brittle that they were easily crushed to below 0.1 μm. This AlN powder had good flowability and sinterability, and transparent AlN ceramics were obtained by hot-pressing at 1900 °C without any sintering aids. A percentage conversion decreased rapidly with increase in NH3 concentration when an N2/NH3 gas mixture was used as floating gas. The nitriding rate depended strongly on the cracks formed on the particle surface, but not on the diffusion of nitrogen through the surface AlN layer.

    DOI: 10.2109/jcersj.102.1032

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  • 高純度AlN微粉末の合成とその特性(共著)

    平成6年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   20 - 21   1994

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  • Soldering of titanium in an experimental electoric furnace

    SAKANO T, KANATANI M., KOHNO S., OKAWA S., WATANABE K., MIYAKAWA O., SHIOKAWA N.

    13 ( 特23 )   62 - 63   1994

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  • 窒化物セラミックスの金合金鋳造に対するコーティング材としての可能性(共著)

    本間摂子

    日本補綴歯科学会雑誌   38 ( 特92 )   145 - 145   1994

  • 金銀パラジウム合金の大気鋳造への窒化物セラミックスの応用(共著)

    平成6年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   72 - 73   1994

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  • 窒化物セラミックスの歯科鋳造用コーティング材としての可能性―金銀パラジウム合金に対する大気中での有効性―(共著)

    新潟歯学会雑誌   23 ( 2 )   86 - 87   1993

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  • Si粉末の浮上式直接窒化法によるSi<sub>3</sub>N<sub>4</sub>微粉末の合成(共著)

    平成5年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   19 - 20   1993

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  • パラフィン被覆AlN粉末の連続合成とその性質(共著)

    平成5年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   21 - 22   1993

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  • 70Au-16Cu-8Ag-3Pd-2Pt合金の金型に発生した局所的隆起現象(共著)

    金谷貢

    鋳物第123回全国講演大会講演概要集   81   81   1993

  • AlN,BNおよびSi<sub>3</sub>N<sub>4</sub>の歯科用鋳型への応用―Au-Ag-Cu-Pd系合金に対する大気中における効果―(共著)

    平成4年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   43 - 44   1992

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  • 二重埋没法の熱コントロールへの応用に関する研究(共著)

    日本歯科技工学会雑誌   13 ( 1 )   136   1992

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  • 窒化物セラミックスによる金銀パラジウム合金鋳造体の改善―大気中における鋳造の場合―(共著)

    日本補綴歯科学会雑誌   36 ( 特87 )   71   1992

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  • 組織内血流量計測による、かみしめ時咀嚼筋の疲労と回復に関する研究(共著)

    平成2年度科学研究費補助金(一般研究B)研究成果報告書(研究課題番号01480446)   1991

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  • キャスト・オン法によるアタッチメント製作に関する基礎的研究

    日本補綴歯科学会雑誌   35 ( 特85 )   151   1991

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  • 歯科金型鋳造へのBNの応用に関する基礎的研究(共著)

    日本セラミックス協会1991年会講演予稿集   337   1991

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  • 窒化物セラミックスを応用したコーヌスクローネ外冠の直接鋳造に関する基礎的研究(共著)

    日本歯科技工学会雑誌   12 ( 1 )   124   1991

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  • 窒化物セラミックスの歯科鋳造への応用―H-BNによる鋳造合金の冷却速度の制御―(共著)

    平成3年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   53 - 54   1991

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  • 電解式組織血流計による咬筋筋組織血流測定法の基礎的検討 Reviewed

    生田伸之, 金谷 貢, 林 豊彦, 野村修一, 石岡 靖

    下顎運動機能とEMG論文集   8   87 - 94   1990.12

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  • Predicting number of bridges and dentures in future by corrected regression analysis

    KANATANI M., OKAWA S., WATANABE K., NAKANO S., MIYAKAWA O.

    18 ( 34 )   178 - 178   1990.9

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  • Theoretical investigation on casting force in pressure casting unit for titanium

    WATANABE K., OKAWA S., KANATANI M., OKABE T., MIYAKAWA O.

    18 ( 34 )   212 - 212   1990.9

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  • Application of Nitrides to Dental Casting : Part 3. Feasibility as Coating Materials for Co-Cr Alloy in a Case of Using Gypsum-Bonded Investment as Outer Investment

    Kanatani Mitsugu, Nomura Shuichi, Ishioka Kiyoshi, Hotta Noriyasu, Kimura Isao

    The journal of the Japan Prosthodontic Society   34 ( 6 )   1235 - 1246   1990

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    Nitrides used in this experiment are h-BN, AIN and Si_3N_4. The feasibility of using the nitrides was studied as wax pattern coating materials for a Co-Cr alloy in an atmosphere of argon. Wax patterns were painted with the nitride coating material (first investing), and then it was outer-invested witla a mixture of gypsum-bonded investment and water (second investing). The temperature of mold was 700℃, and the thin specimens were cast with an argon arc vacuum-pressure casting machine in the Co-Cr alloy (composition Co : 63 wt%, Cr : 27, Mo : 5, Bat. : 5 ; melting point : 1,380℃). Surfaces of cast specimens were investigated with the unaided eye, a scanning electron microscope, a surface roughness analyzer, an X-ray diifractometer and a micro-Vickers hardness tester. Furthermore, the cast clasp using an h-BN coating material were made and investigated with the unaided eye. Results were sumcmarized as follows : 1. The nitrides inhibited remarkably a reactiona between the cast specimen and the investment. 2. BN had the good effect of separation. 3. The cast surface coated BN had less clitaging than uncoated one. This indicated that cleansability and work efficiency were improved. 4. The surface roughness (Rz) of the specimens decreased to 32, 42 and 60% of the control with BN, Si_3N_4 and AlN, respectively. 5. A hardness change of the alloy by casting was the least in the case of using BN. 6. BN also had the effect in fabricating a cast clasp in the clinical form.

    DOI: 10.2186/jjps.34.1235

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    Other Link: http://search.jamas.or.jp/link/ui/1992023902

  • h-BNを分離材に応用した歯科金型鋳造に関する基礎的研究(共著)

    平成2年度日本セラミックス協会東北北海道支部研究発表会講演要旨集   37 - 38   1990

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  • 直接鋳造によるコーヌス外冠の製作に関する基礎的研究―本法の問題点とその対策法―(共著)

    金谷貢, 野村 修一, 石岡 靖, 堀田 憲康, 木村 勇雄

    歯科材料・器械   9 ( 特16 )   87 - 88   1990

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    コーヌス外冠を高精度に製作するため, 内冠上に外冠をワックス形成し, 内冠ごと埋没, 鋳造する方法が報告されている.この製作法では, 鋳造時の内外冠の溶着等の防止が必要となるため, 外冠のワックス形成前に(1)内冠上に分離材を施す, (2)内冠上に高温酸化による分離膜を生成させる, という2つの手法が用いられている.本法に関する従来の報告は, 術式について述べたものが若干あるだけで, 基礎的な研究はほとんど行われていない.ところで, 演者らの, 窒化物セラミックスの応用による歯科鋳造の改善に関する研究によれば六方晶窒化ホウ素(h-BN)を上述(1)の分離材に応用できる可能性は高い.そこで今回は分離材として, h-BNおよび本法の専用分離材として市販されているPGAを選択し, その効果について検討した.また, 内冠に相当する鋳造体に局部的隆起現象が観察されたので報告する.

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  • Application of Nitrides to Dental Casting : Part 2. Feasibility as Coating Materials for Co-Cr Alloy Reviewed

    Kanatani Mitsugu, Nomura Shuichi, Ishioka Kiyoshi, Hotta Noriyasu, Kimura Isao

    The journal of the Japan Prosthodontic Society   33 ( 1 )   64 - 69   1989.12

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    Nitrides used in this experiment are hBN, AIN and Si3N). We studied feasibility of nitrides as wax pattern coating materials for Co-Cr alloy in an atmosphere of argon. Wax patterns were painted with coating material of nitrides (first investing), then a mixture of phosphate bonded investmetat and water was used in outer investing (second investing). The temperature of mold was 800'C, antd an argon arc vacuum-pressure casting machine was used. We cast the thin specinnens in Co-Cr alloy (composition Co : 63 wt%, Cr : 27wt%, Mo : 5wt%,Bal. : 5wt% ; melting point : 1,380℃). Surfaces of cast specimens were investigated using theunaided eye, a scanning electron microscope and a surface roughness analyzer. Furthermore, the thick specimens (globular form : φ6.5mm) using coatiuag material of hBN were investigated using the unaided eye. Results were summarized as follows ; 1. The nitrides controlled remarkably the reaction between cast specimen and investment. 2. The nitrides had the good effect of separation. 3. The cast surface coated the nitrides had less clinging than uncoated one, and this indicated that its cleansability was improved. 4. The nitrides decreased the surface roughness (Rz) of the cast to about 1/3. 5. hBN had the best effect in nitrides. 6. hBN also had the effect in a thick globular specimen.

    DOI: 10.2186/jjps.33.64

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    Other Link: http://search.jamas.or.jp/link/ui/1990015727

  • Precision Cast and Preparation of Cast Clasp by Using Nitride Ceramics:A Case of Using Gypsum-Bonded Investment as Outer Investment for Dental Co-Cr Alloy "jointly worked"

    Tracsactions International Congress on Dental Materials   324   1989

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  • AlN,BN及びSi<sub>3</sub>N<sub>4</sub>による歯科用Co-Cr合金精密鋳造体の作製(共著)

    日本セラミックス協会1989年会講演予稿集   305   1989

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  • A Fundamental Investigation of Measurement of Local Blood Flow of Masseter Muscle by Electrically Generated Hydrogen

    Ikuta Nobuyuki, Kanatani Mitsugu, Hayashi Toyohiko, Nomura Shuichi, Ishioka Kiyoshi

    Proceeding of Japanese Society of Stomatognathic Function   8   10 - 94   1989

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  • Precision Cast and Preparation of Cast Clasp by Using Nitride Ceramics:A Case of Using Gypsum-Bonded Investment as Outer Investment for Dental Co-Cr Alloy(共著)

    Tracsactions International Congress on Dental Materials   324   1989

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  • 窒化物セラミックスによる鋳造体の表面状態およびルツボ耐久性の改善

    金谷 貢, 野村修一, 石岡 靖, 堀田憲康, 木村勇雄, 金谷 保

    Quintessence of Dental Technology   13 ( 3 )   289 - 296   1988.12

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  • Application of Nitrides to Dental Casting : Part 1. Feasibility as Coating Materials for Au-Ag-Pd Alloy Reviewed

    Kanatani Mitsugu, Nomura Shuichi, Ishioka Kiyoshi, Hotta Noriyasu, Kimura Isao

    The journal of the Japan Prosthodontic Society   32 ( 1 )   43 - 51   1988.12

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    Nitrides used in this experiment are BN, A IN and Si_3N_4. First, we studied wettability between nitrides and molten Au-Au-Pd alloy (comrosition Au : 12 wt%, Ag : 45 wt%, Cu :18 wt%, Pd : 20 wt%, Bal. : 5 wt% ; melting point : 930℃). Secondly, we studied feasibility of nitrides as coating materials for wax patterns, that is, Au-Ag-Pd alloy was cast after painting wax patterns with coating material of nitrides. The temperature of mold was 700℃, and an argon arc vacuum-pressure casting machine was used. Surfaces of casted material were investigated using a scanning electron microscope, X-ray diffractometer and surface roughness analyzer. Results were summarized as follows ; 1. The nitrides little wetted molten Au-Ag-Pd alloy. 2. The color of the cast surface coated BN was purple with a dash of red, and this was derived from Cu_2O. 3. The dense coating layer of BN inhibited formation of CuO on the cast surface and reduced the surface roughness of the cast. 4. The cast surface coated the nitrides had less clinging than uncoated one, and this indicated that its cleansability was improved.

    DOI: 10.2186/jjps.32.43

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    Other Link: http://search.jamas.or.jp/link/ui/1989093703

  • 窒化物セラミックスCo-Cr合金鋳造に対するコーティング材としての応用(共著)

    歯科材料・器械   7 ( 特12 )   116 - 117   1988

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  • AlN,BNおよびSi<sub>3</sub>N<sub>4</sub>による歯科用Co-Cr合金鋳造体の表面改善―ワックスパターンコーティング法を用いたアルゴン雰囲気鋳造の場合―(共著)

    日本セラミックス協会昭和63年度東北北海道支部研究発表会講演要旨集   66 - 67   1988

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  • 窒化物セラミックスによる金銀パラジウム合金鋳造体の表面性状の改善に関する研究(共著)

    日本補綴歯科学会雑誌   31 ( 特78 )   104   1987

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  • 窒化物系セラミックスの歯科用鋳型への応用―Au-Ag-Cu-Pd系合金に対するコーティング材としての効果―(共著)

    昭和61年度窯業協会東北北海道支部研究発表会講演要旨集   43 - 44   1986

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Presentations

  • 華岡青洲門人・小田順亭(魯庵)の墓誌銘の原史料と毛利空桑全集収載の二次史料の内容

    金谷 貢, 金谷桂子

    第119回日本医史学会総会・学術大会  2018.6  日本医史学会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:鹿児島・鹿児島県医師会館  

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  • 歯科材料・技術に関するコ・デンタルスタッフに対する卒後教育におけるワークショップ方式の可能性

    金谷 貢, 山野井敬彦, 岡田直人, 伊藤圭一, 飛田 滋, 岩嶋秀明, 丸山 満

    第56回広島県歯科医学会 併催 第101回広島大学歯学会 併催 日本歯科技工学会中国・四国支部第12回学術大会  2017.10  広島県歯科医学会・広島大学歯学部・日本歯科技工学会中国・四国支部

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:広島・広島県歯科医師会館  

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  • 華岡青洲の弟子・小田順亭と帆足萬里の弟子・小田魯庵が同一人物である証拠の発見

    金谷 貢, 金谷桂子

    第118回日本医史学会総会・学術大会  2017.6  日本医史学会

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    Venue:京都・京都大学芝蘭会館  

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  • 『華岡青洲先生及其外科』収載の「華岡青洲先生春林軒門人録」の期日は入門日である

    金谷桂子, 金谷 貢

    第118回日本医史学会総会・学術大会  2017.6  日本医史学会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都・京都大学芝蘭会館  

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  • 華岡青洲の無名の弟子・小田順亭(魯庵)が華岡流麻酔法を用いて行った手術の事例

    金谷 貢, 金谷桂子

    第117回日本医史学会総会・学術大会  2016.5  日本医史学会

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    Venue:広島・広島県医師会館  

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  • 低エネルギー電子線照射滅菌が純チタン表面におよぼす影響:オートクレーブと低温ガスプラズマ滅菌との比較

    金谷 貢, 野村章子, 泉 健次

    第67回日本歯科理工学会学術講演会  2016.4  日本歯科理工学会

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    Venue:福岡・九州大学医学部百年講堂  

    246

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  • 金合金の大気中鋳造への六方晶窒化ホウ素の応用

    金谷 貢, 大川成剛, 泉 健次, 木村勇雄

    第65回日本歯科理工学会学術講演会  2015.4  日本歯科理工学会

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    Venue:仙台市 仙台市情報・産業プラザ  

    243

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  • 低エネルギー電子線照射滅菌による純チタン表面の変化 International conference

    金谷 貢

    日本歯科理工学会中部地方会夏期研修会  2014.8  日本歯科理工学会中部地方会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜  

    240

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  • 歯科診療室における有害な粒径の粉塵の運動に関する考察

    金谷 貢

    日本補綴歯科学会第123回学術大会  2014.5  日本補綴歯科学会

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:仙台  

    239

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  • 真空練和容器とスパチュラに付着した水滴が石膏の混水比および圧縮強さにおよぼす影響

    金谷 貢, 大川成剛, 泉 健次, 木村勇雄

    第63回日本歯科理工学会学術講演会  2014.4  日本歯科理工学会

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    Venue:東京  

    238

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  • 日本歯科理工学会称号制度を活用して患者の利益を図るための方法に関する一考察

    金谷 貢, 大川成剛, 山鹿義郎, 金子広美, 泉 健次

    第62回日本歯科理工学会学術講演会  2013.10  日本歯科理工学会

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    Venue:新潟  

    234

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  • 歯科材料・器械に関する卒後研修におけるワークショップの有効性 −アンケート調査による検討−

    金谷 貢, 大川成剛, 渡辺孝一, 伊藤恭輔, 金子広美, 山鹿義郎

    第59 回日本歯科理工学会学術講演会  2012.4  日本歯科理工学会

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    Venue:徳島  

    220

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  • Evaluation of Behavior of Dust in Dental Clinic Office and Laboratory Using Particle of Noble Metal Alloy as Marker International conference

    Kanatani M, Okawa S, Watanabe K, Kimura I, Kobayashi M, Ito K, Yamaga Y, Kaneko H

    International Dental Materials Congress 2011  2011.5  The Japanese Society for Dental Materials and Devices

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    Language:English   Presentation type:Poster presentation  

    Venue:Seoul, Korea  

    206

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  • 真空練和容器とスパチュラに付着した水滴量に対する振りきり操作の有効性

    金谷 貢, 大川成剛, 渡辺孝一, 木村勇雄

    第55回日本歯科理工学会学術講演会  2010.4  日本歯科理工学会

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    Venue:東京  

    197

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  • 合金微粒子の到達高さから見た技工室における粉塵の挙動

    金谷 貢

    第31回日本歯科技工学会学術大会  2009.11  日本歯科技工学会

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    Venue:福岡  

    193

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  • 真空練和容器とスパチュラに付着した水滴量が混水比におよぼす影響

    金谷 貢, 大川成剛, 渡辺孝一, 木村勇雄

    第54回日本歯科理工学会学術講演会  2009.10  日本歯科理工学会

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    Venue:鹿児島  

    191

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  • Feasibility of titanium casting using hBN ceramic with high thermal conductivity International conference

    Kanatani M

    4th International Congress of Dental Technology  2008.11  Nippon Academy of Dental Technology

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    Venue:Osaka, Japan  

    180

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  • Sharing of important point for dental technology: Construction of cast and die using stone

    2008.11 

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  • Behavior of dust in dental clinic office using attained height of metal particle as circumstantial evidence

    2008.9 

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  • Feasibility of Titanium Casting Using Ceramic Mold with High Thermal Conductivity: Case of High-temperature Mold Using hBN Plate International conference

    Kanatani M, Okawa S, Watanabe K, Nakano S, Hotta N, Kobayashi M

    International Dental Materials Congress 2007  2007.11  The Japanese Society for Dental Materials and Devices

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    Language:English   Presentation type:Poster presentation  

    Venue:Bangkok, Thailand  

    168

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  • Effectiveness of workshop for dental technologists on postgraduate course: Based on questionnaire completed in 1st workshop of Niigata D. T. A., Niigata Branch Office

    2007.9 

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  • Feasibility of Titanium Casting Using Ceramic Mold with High Thermal Conductivity Invited International conference

    Kanatani M, Okawa S, Watanabe K, Miyakawa O, Nakano S, Hotta N, Kobayashi M

    The 6th International Symposium on Titanium in Dentistry  2007.6  Society for Titanium Alloys in Dentistry

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    Language:English   Presentation type:Poster presentation  

    Venue:Kyoto, Japan  

    159

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  • 細いワイヤーを用いた隣接面鉤の維持力 -上顎中切歯用可撤性部分床義歯の場合-

    金谷 貢, 熊倉喜久夫, 野村章子

    第116回日本補綴歯科学会学術大会・第5回アジア補綴歯科学会  2007.5  日本補綴歯科学会・アジア補綴歯科学会

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:神戸  

    157

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  • Retention force of suprabulge type clasp using Co-Cr wires less than 0.7 mm diameter in facies approximalis of abutment teeth: For removable partial dentures for upper central incisor

    2006.10 

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  • Plan and devices in workshop for dental technologists' postgraduate course: Based on 1st workshop of Niigata D. T. A, Niigata Branch Office

    2006.9 

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  • コ・デンタルスタッフの卒後研修におけるワークショップの有効性 - 歯科技工士の研修でのアンケート調査から - Invited

    金谷 貢

    平成18年度日本歯科理工学会中部支部夏期研修会  2006.8  日本歯科理工学会中部支部

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟・越後湯沢・湯沢東映ホテル  

    140

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  • 歯科インプラントの表面特性について(第四報) -ラット骨内から摘出された溝加工チタン試料の表面分析-

    第48回日本歯科理工学会学術講演会  2006 

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  • リン酸カルシウム水溶液中での陽極酸化により析出したナノ粒子のキャラクタリゼーション

    第19回歯科チタン学会  2006 

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  • ラット骨内に埋入・摘出されたチタン表面のXPS分析(第2報)

    第19回歯科チタン学会  2006 

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  • 酸化チタン粉末の浮上式還元窒化法による窒化チタン粉末の合成

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • 窒素-アンモニア-ヘキサン混合ガスによる酸化チタン粉末の流動層反応

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • 酸化タンタル粉末の流動層還元窒化反応

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • 酸化ニオブ粉末の流動層反応による非酸化物セラミック粉末の合成

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • Y2O3-CaO-Al2O3系助剤を用いたAlN粉末の低温焼結

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • 窒素-ヘキサン混合ガスによるAl粉末の直接窒化反応

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • HIP焼結による透明酸化イットリウムセラミックスの作製

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • HIP焼結による透光性酸化マグネシウムセラミックスの作製

    平成18年度日本セラミックス協会東北北海道支部研究発表会  2006 

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  • 8020運動が推進されているが,高齢者ならびに要介護高齢者にかかわる欠損補綴は将来,減少していくのであろうか?

    第31回明倫短期大学野村研究室プレゼンテーション  2006 

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  • CaとPを含む溶液中でチタンの陽極酸化により析出したナノ粒子のXPS分析

    第48回日本歯科理工学会学術講演会  2006 

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  • Feasibility of titanium casting using ceramic mold with high thermal conductivity: Case of high-temperature mold using hBN plate

    2005.9 

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    Language:Japanese   Presentation type:Poster presentation  

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  • Feasibility of titanium casting using ceramic mold with high thermal conductivity

    2004.9 

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  • Setting Expansion Pressure of Alpha-Calcium Sulfate Hemihydrate International conference

    Kanatani Mitsugu, Nakano Syuji, Okawa Seigo, Watanabe Kouichi, Miyakawa Osamu, Hotta Noriyasu

    The 5th International Meeting of Pacific Rim Ceramic Societies (PacRim 5)(Incorporating the 16th Fall Meeting of the Ceramic Society of Japan)  2003.9  Pacific Rim Ceramic Societies

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    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Nagoya Congress Center (名古屋国際会議場), Nagoya  

    113

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  • Setting expansion pressure of dental stone by direct measurement

    2003.4 

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  • Setting Expansion Pressure of Dental Plaster and Stone by Direct Measurement International conference

    Kanatani Mitsugu, Nakano Syuji, Okawa Seigo, Watanabe Kouichi, Miyakawa Osamu, Hotta Noriyasu

    Fourth International Congress On Dental Materials  2002.10 

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    Language:English   Presentation type:Poster presentation  

    Venue:Hawai'i Convention Center, Honolulu, HI USA  

    97

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  • 直接的測定法による硫酸カルシウム半水和物の凝結膨張圧

    金谷 貢, 中野周二, 堀田憲康, 大川成剛, 渡辺孝一, 宮川 修

    平成13年度日本セラミックス協会東北北海道支部研究発表会  2001.11  日本セラミックス協会東北北海道支部

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:山形・米沢・山形県立置賜広域文化施設  

    92

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  • Future Demand of Prosthetic Appliances on the Elderly in Japan International conference

    Kanatani Mitsugu, Okawa Seigo, Watanabe Kouichi, Miyakawa Osamu

    International Association for Dental Research 79th General Session & Exhibition  2001.6  International Association for Dental Research

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    Language:English   Presentation type:Poster presentation  

    Venue:Makuhari Center and Prince Hotel, Chiba, Japan  

    88

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  • Fitness on denture and relining using light-curing base resin: Comparison with conventional method and consideration on deformation

    2001.3 

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  • Number projection of bridges or dentures on the elderly or dependent elderly people

    2000.11 

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Works

  • 光重合型レジンによる義歯製作における適合性

    2001

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  • Fitness on denture using light-curing base resin

    2001

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  • 直接・連続的測定による硫酸カルシウム半水和物の凝結膨張圧

    2000

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  • Pressure of setting expansion on calcium sulfate hemihydrate by direct and continuous measurement

    2000

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  • Synthesis and Sintering Behavior of AIN/YN Composite Powders by Floating-type

    1996
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    1997

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  • 浮上式流動層CVDによるAIN/YN複合微粉末の合成と焼結

    1996
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    1997

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Awards

  • 第52回日本歯科理工学会学術講演会発表優秀賞

    2009.4   日本歯科理工学会   金属微粒子の到達高さを傍証として用いた歯科診療室内における粉塵の挙動

    金谷 貢, 大川成剛, 渡辺孝一, 堀田憲康, 木村勇雄, 小林正義

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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  • 化学工学会関東支部学生賞銀賞(関東支部長賞)

    2008.8   化学工学会   抗菌剤含有ヒドロキシアパタイト中空球状粒子被覆チタンインプラントの作製

    川口峻範, 木村勇雄, 柄崎和彦, 高橋真記, 田中孝明, 谷口正之, 金谷 貢

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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  • The 6th International Symposium on Titanium in Dentistry

    2007.6   Society for Titanium Alloys in Dentistry   Anodic Oxidation of Ni-Ti Orthodontic Wires in NaOH solution

    Homma K, Watanabe K, Okawa S, Kanatani M, Miyakawa O

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    Award type:Award from international society, conference, symposium, etc.  Country:Japan

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  • 第44回日本歯科理工学会学術講演会発表優秀賞

    2004.12   日本歯科理工学会   高熱伝導性セラミックス鋳型によるチタン鋳造の可能性

    金谷 貢, 大川成剛, 渡辺孝一, 宮川 修, 中野周二, 堀田憲康, 小林正義

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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  • 第79回日本医科器械学会大会優秀発表賞

    2004.5   日本医科器械学会   再生器材の洗浄,滅菌方法について:歯科用切削バーの劣化の比較

    戸川紀子, 加藤一誠, 金谷 貢

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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  • 日本歯科理工学会学術講演会発表優秀賞

    2004  

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  • 平成13年度日本補綴歯科学会特定推進研究優秀論文賞

    2002.5   日本補綴歯科学会   高齢者および要援護高齢者にかかわるブリッジ数と有床義歯数の将来推計の試み

    金谷 貢

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

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  • 日本補綴歯科学会特定推進研究優秀論文賞

    2002  

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    Country:Japan

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  • The MSSJ Prize in Research (2001)

    2001.5   The Materials Science Society of Japan   Synthesis and Sintering Behavior of AlN/YN Composite Powders by Floating-type Fluidized-bed CVD

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

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  • 日本材料科学会論文賞

    2001  

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    Country:Japan

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Research Projects

  • Development of a new zirconia surface treatment applying the metallize method

    Grant number:21K09975

    2021.4 - 2024.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

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    Grant amount:\3380000 ( Direct Cost: \2600000 、 Indirect Cost:\780000 )

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  • 低エネルギー電子線照射は歯科切削加工(CAD/CAM)用レジンの破折を防止する

    2018.4 - 2021.3

    System name:科学研究費助成事業

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\3400000 ( Direct Cost: \2380000 、 Indirect Cost:\1020000 )

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  • CAD/CAM

    2018.4 - 2019.3

    System name:科学研究費助成事業

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    大川成剛

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    Grant type:Competitive

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  • Formation of functional dental materials by inorganic-organic fusion and their surface properties

    Grant number:17K11776

    2017.4 - 2020.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    OKAWA SEIGO

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    Poly(ether ether ketone) is expected for a future biomaterial. We investigated that the effect of modification of surfaces of PEEK, carbon fiber reinforced PEEK (CPEEK), glass fiber reinforced PEEK (GPEEK), and hydroxyapatite reinforced PEEK (HAPEEK) on adhesive properties. Pre-polymerization of methylmethacrylate (MMA) with UV initiator were used for surface modification. A MMA with UV initiator was coated at an adhesive area with a brush, and the area was irradiated with UV light with wavelength of 365 nm for 20 s. The bonding strength of PEEK increased to 20.1 MPa. Graft polymerization reaction will be carried out on the substrate. These results showed that the modification of pre-polymerization was suitable to increase to the bonding strength to PEEK. This new surface modification, which provided high adhesive properties to the PEEK and its compounds, is of some help for widely applications of PEEKs.

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  • 低エネルギー電子線照射が医療機関における滅菌処理の効率化,環境浄化に貢献する

    2013.4 - 2016.3

    System name:科学研究費助成事業

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    野村章子

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    Grant type:Competitive

    Grant amount:\845000 ( Direct Cost: \650000 、 Indirect Cost:\195000 )

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  • 口腔粘膜3次元培養モデルを用いた義歯床下の顎骨吸収メカニズムの解析 -培養細胞圧力負荷システムによる義歯装着シミュレーション-

    2013.4 - 2014.3

    System name:新潟大学プロジェクト推進経費(発芽研究)

    Awarding organization:新潟大学

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\422000 ( Direct Cost: \422000 )

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  • ヒドロキシアパタイト壁マイクロカプセルで被覆したチタンインプラントの作製

    2009.4 - 2012.3

    System name:科学研究費助成事業

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

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    Grant type:Competitive

    Grant amount:\468000 ( Direct Cost: \360000 、 Indirect Cost:\108000 )

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  • 超高熱伝導により高温反応の完全抑制を指向するチタン用ハイブリッド鋳型材の開発

    2009.4 - 2012.3

    System name:科学研究費助成事業

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\3510000 ( Direct Cost: \2700000 、 Indirect Cost:\810000 )

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  • Control of composition and morphology of hollow hydroxyapatite microspheres and their application to dental implant materials releasing an antimicrobial agent

    Grant number:21560712

    2009 - 2011

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    KIMURA Isao, KANATANI Mitsugu, TANAKA Takaaki, AKAZAWA Toshiyuki

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    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

    Hollow microspheres of calcium phosphate compounds(such as hydroxyapatite, calcium hydrogen phosphate, etc.) were prepared by using multiple emulsions. The composition, morphology, and crystallinity were controlled by the addition of one of a magnesium salt, a carbonate, and low molecular weight organic compounds. For obtaining fundamental knowledge to apply the microspheres to dental implants which release an antimicrobial agent, the conditions for making them adhere onto titanium were investigated. A model implant was fabricated through the following procedures : the formation of microsphere layers on the surface of a titanium screw, the impregnation of a dye solution as the model material of an antimicrobial agent into the microsphere layer, and the coating with biodegradable polymer, poly(lactic acid). With the aim of applying the microspheres to a root canal treatment, composite microcapsules of the microspheres with biodegradable polymer were prepared.

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  • 低エネルギー電子線は超高齢社会での補綴物の安全性を向上し滅菌コストを削減する

    2008.4 - 2012.3

    System name:科学研究費助成事業

    Research category:基盤研究(B)

    Awarding organization:日本学術振興会

    野村章子

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    Grant type:Competitive

    Grant amount:\240000 ( Direct Cost: \177000 、 Indirect Cost:\63000 )

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  • 超高熱伝導により高温反応をほとんど抑制するチタン用ハイブリッド鋳型材の開発

    2008.4 - 2009.3

    System name:新潟大学科研費応募支援経費

    Awarding organization:新潟大学

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\240000 ( Direct Cost: \240000 )

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  • インプラント術後骨形成促進を指向するヒドロキシアパタイト壁マイクロカプセルの調製

    2006.4 - 2009.3

    System name:科学研究費助成事業

    Research category:基盤研究(C)

    Awarding organization:日本学術振興会

    木村勇雄

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    Grant type:Competitive

    Grant amount:\91000 ( Direct Cost: \70000 、 Indirect Cost:\21000 )

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  • ナノ・バイオハイブリッド化医用材料化学に関する基盤研究

    2006.4 - 2009.3

    System name:新潟大学プロジェクト推進経費(助成研究)

    Awarding organization:新潟大学

    坪川紀夫

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    Grant type:Competitive

    Grant amount:\2811614 ( Direct Cost: \2811614 )

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  • Biomaterial nano-particles development by low voltage electrolysis with polarity inversion

    Grant number:18592116

    2006 - 2007

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    OKAWA Seigo, KANATANI Mitsugu

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    Grant amount:\1680000 ( Direct Cost: \1500000 、 Indirect Cost:\180000 )

    In order to make a calcium phosphate compound with nano-size on valve metals such as Ta, Nb, and Zr, electrochemical deposition of calcium phosphate on different metals was performed by anodic oxidation with alternate polarity inversion at an applied 20 VDC. A saturated hydroxyapatite (HAP)-phosphoric acid solution (pH 3) was used as the electrolyte. FTIR, XRD, and XPS were employed to investigate the detailed characteristics of the deposition. HAP was precipitated on Ta; HAP including brushite and monetite on Nb; and HAP and monetite on Zr. The Ca/P atomic ratios were 1.3-1.5 by XPS, and HPO42- bands were detected on Ta by FTIR. Therefore, the HAP precipitated on Ta was a Ca-deficient HAP. In addition, the XPS spectra of the specimens showed that phosphate ions were incorporated into the anodic oxide film. Deposits with nano-grain size were observed by AFM, and their morphologies depended on the surface characteristics of the valve metal. The results confirmed that anodic oxidation with polarity inversion was effective in accelerating the deposition of calcium phosphate with nano-grain size on valve metals. Such valve metals having this characteristic should be potentially bioactive.

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  • Chemical properties of toothbiushhed titanium restoration surface and chemical state of its abraded powder

    Grant number:14571842

    2002 - 2003

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (C)

    Awarding organization:Japan Society for the Promotion of Science

    MIYAKAWA Osamu, KANATANI Mitsugu, OKAWA Seigo

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    Grant amount:\2300000 ( Direct Cost: \2300000 )

    Titanium plate was toothbrused using two fluoride-free toothpastes, ETL and NSA, containing finer abrasive grains of amorphous silica and coarser abrasive gains of crystalline calcium hydrogen phosphate dihydrate, respectively. The micro morphology, chemical composition, and passive film structure of the brushed surface as well as abraded titanium debris were investigated by means of XGT,EPMA,SPM,and XRD.
    The results obtained are summarized as follows :
    1)Comet tail-like dimple pattern and hairline-like scratch pattern were observed in the ETL-and NSA-brushed surfaces. The latter surface was much rougher than the former one. Hie more acidic the toothpaste slurries, both the patterns became more vague, and the surfaces smoother. 2)Corresponding to the dimple pattern(ETL), Si was locally concentrated with higher amounts of oxygen, while along the scratched hairlines(NSA), Ca and P were concentrated with higher amounts of oxygen. The amounts of these elements from the abrasive materials decreased with the increasing acidity of the toothpaste slurries. 3)XPS analysis showed that Si existed as species like titanium silicate in the surface oxide film 4)While Ca and P existed in relatively deep surface of NSA, these elements in the outermost surface might exist as complicated species like titanate including Ca and P. 5)Fine titanium debris of 0.2〜0.3μm were found in the used slurries, some were isolated from, and the others attached to abrasives. 5)XPS spectrum of titanium in the used paste was broad and weak, but suggested the existence of reaction product of titanium with higher binding energy than TiO_2.6) XRD implied that Ca ions of calcium hydrogen phosphate dihydrate might be substituted by Ti ion.

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  • Retention fore of thin RPD Co-Cr Wire clasps

    2000

    System name:Cooperative Research

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    Grant type:Competitive

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  • 細いCo-Cr合金線を使用したクラスプの維持力

    2000

    System name:共同研究

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    Grant type:Competitive

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  • 鋳型の微細な空隙に残留および吸着したガスがチタン鋳造体に及ぼす影響

    1996.4 - 1997.3

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1000000 ( Direct Cost: \1000000 )

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  • Setting Expansion Pressure of Plaster and Stone by Direct and Continuous Measurement

    1996

    System name:Cooperative Research

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    Grant type:Competitive

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  • 直接・連続的測定によるセッコウの凝結膨張圧

    1996

    System name:共同研究

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    Grant type:Competitive

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  • 窒化ホウ素(BN)を応用した直接鋳造法による高精度コーヌスクローネ製作法の開発

    1992.4 - 1993.3

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\900000 ( Direct Cost: \900000 )

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  • 窒化物セラミックスの導入による高精度のコーヌスクローネ製作法の開発

    1990.4 - 1991.3

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\900000 ( Direct Cost: \900000 )

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  • 窒化物セラミックスによる純チタン鋳造体の改善に関する基礎的研究

    1989.4 - 1990.3

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\800000 ( Direct Cost: \800000 )

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  • A Study on Fatigue and Recovery of Masticatory Muscles during Controlled Biting by Tissue Blood Flow Measurement

    Grant number:01480446

    1989 - 1990

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for General Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    NOMURA Shuichi, UEHARA Shigechika, KANATANI Mitsugu

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    Grant amount:\5200000 ( Direct Cost: \5200000 )

    In the clearance method using electrolytically generated hydrogen gas (electrolytic method), hydrogen gas is generated by applying current to the inserted electrode in the tissue. We estimate the amount of local blood flow by its clearance curve. However, there is an inherence in this method because measurement values vary according to the conditions under which in the measurements themselves were taken. For example, the electrolytic current intensity (Id) and electrolytic current duration (Td) which we call the electrolytic parameters. We determine four electrolytic parameters : 1) Id=3 _<mu>A, Td=30 _<sX> 2) Id=5 _<mu>A, Td=30_s 3) Id=7 _<mu>A, Td=30_s 4) Id=10 _<mu>A, Td=50_s. We investigated the reproducibility of measured values of local blood flow in masseter muscle tissue both at rest and in a rest-clench-rest sequence. The tests were conducted on two days, more than thirty days apart, with the following results :
    At rest position, the variation in measured blood flow in the course of one day is minimal, and the variation between the first and second days is large, except parameter4. During rest-clench-rest sequence, the variation in the measured values observed in one day and that between the first and second days is larger than the results measured only in the rest position, with the exception of parameter4.
    Based on these data, we concluded that when applying this electrolytic method, we must maintain the positional relationship between the inserted electrode and surrounding tissue. We also surmised that clenching caused changes to occur between them, and the degree of disparity became greater. In parameter4, more hydrogen gas was generated than parameters1, 2or3, and changes in the position of electrode in the tissue had no effect on measurement values. In parameter4, measurement blood flow after clench was larger than that measured in the rest before clench. However, the amount of increase was little.

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  • 各種耐火材料の歯科チタン鋳造用坩堝への応用に関する基礎的研究

    1986.4 - 1987.3

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    金谷 貢

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\900000 ( Direct Cost: \900000 )

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  • ファインセラミックスの歯科領域への応用に関する基礎的研究

    1985

    System name:共同研究

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    Grant type:Competitive

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  • Basic Study on Application of Fine Ceramics to Dental Field

    1985

    System name:Cooperative Research

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    Grant type:Competitive

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Teaching Experience (researchmap)

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Teaching Experience

  • 生体材料学演習IIA

    2021
    Institution name:新潟大学

  • 生体材料学特論IA

    2021
    Institution name:新潟大学

  • 生体材料学演習IA

    2021
    Institution name:新潟大学

  • 生体材料学演習IIB

    2021
    Institution name:新潟大学

  • 生体材料学演習IB

    2021
    Institution name:新潟大学

  • 生体材料学特論IIA

    2021
    Institution name:新潟大学

  • 基礎歯学コースワーク(生体材料関係コースワークI)

    2021
    Institution name:新潟大学

  • 基礎歯学コースワーク(生体材料関係コースワークII)

    2021
    Institution name:新潟大学

  • 生体材料学特論IB

    2021
    Institution name:新潟大学

  • 生体材料学特論IIB

    2021
    Institution name:新潟大学

  • 人体のしくみ

    2020
    Institution name:新潟大学

  • 生体理工学

    2017
    Institution name:新潟大学

  • 生体材料学演習ⅠB

    2017
    Institution name:新潟大学

  • 生体材料学演習ⅡB

    2017
    Institution name:新潟大学

  • 歯科理工学Ⅱ

    2008
    Institution name:新潟大学

  • 歯科理工学Ⅰ

    2008
    Institution name:新潟大学

  • 生体理工学Ⅰ

    2008
    -
    2016
    Institution name:新潟大学

  • 生体材料学

    2007
    Institution name:新潟大学

  • 基礎科学演習

    2007
    -
    2016
    Institution name:新潟大学

  • 歯科理工学II

    2007
    Institution name:新潟大学

  • 生体理工学I

    2007
    Institution name:新潟大学

  • 歯科理工学I

    2007
    Institution name:新潟大学

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Social Activities

  • 新潟県歯科技工士国家試験委員

    2000.4 - 2001.3

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    Audience: Governmental agency

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  • 新潟県歯科技工士国家試験委員

    1996.4 - 1997.3

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    Audience: Governmental agency

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