Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND AND OBJECTIVES: Several epidemiological studies have reported that smokers have a higher prevalence and severity of periodontal disease than do nonsmokers, and that smoking negatively affects nutritional status and is associated with a reduced intake of antioxidants, particularly vitamin C. The present investigation aimed to examine the relationship between serum vitamin C levels and smoking and its influence on the periodontal condition in older adults. MATERIALS AND METHODS: A total of 353 respondents met the inclusion criteria and were enrolled in the present study. The periodontal status of the study participants was determined through examinations of one or more residual teeth, which included a measurement of the probing pocket depth (PPD) and clinical attachment level (CAL) at six regions of each tooth. Blood samples were collected during the dental examinations and then sent to a laboratory to evaluate serum vitamin C and cotinine levels. A serum cotinine concentration of 100 ng/ml was considered a relevant threshold for active smoking. After dividing the participants into two groups according to serum cotinine levels, Poisson regression analysis was carried out to compare vitamin C levels with the prevalence rate ratio (PRR) for periodontal condition markers for each group based on serum cotinine levels. RESULTS: We evaluated differences in the PRR of serum vitamin C tertiles between participants with high (≥100 ng/ml) or low (<100 ng/ml) serum cotinine levels after adjusting for sex, the use of interdental brushes or dental floss, and the number of teeth. A negative tendency between the PRR of vitamin C tertiles for the PPD or CAL was seen for both groups. Especially, a bigger difference was observed in the group with high serum cotinine levels. The PRR of the first tertiles in the high serum cotinine group was 5.03, compared with 2.69 in the low serum cotinine group (relative risk: 1.9). CONCLUSION: The results of this study suggest a potential association between vitamin C levels and the periodontal condition, which may be influenced by smoking status.

DOI： 10.1111/jre.12988

PubMed

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Language：Japanese   Publisher：(一社)日本口腔衛生学会  

本研究の目的は小学生における口唇閉鎖力の年齢による変化を示すともに,口唇閉鎖力に影響を与える要因を明らかにすることである.新潟県内Y小学校に通う1年生から6年生の328名(男児167名,女児161名)についてアンケート調査(同意率80.8%)および口唇閉鎖力の測定を実施した.小学生における口唇閉鎖力の年齢による変化を示すために,年齢による口唇閉鎖力の推移を比較した.さらに,9歳未満と9歳以上の2群に分け,各群における口唇閉鎖力4分位群による対象者の特性について比較し,関連する要因についても検討を加えた.その結果,本研究の対象者における口唇閉鎖力は増齢とともに緩やかな増加がみられた.口唇閉鎖力4分位と対象者の特性との関連について,9歳未満では現在歯数,いびきの有無との関連がみられた(オッズ比[95%信頼区間]=1.28[1.01-1.56],0.45[0.24-0.84]).9歳以上の群では,年齢,ローレル指数との関連がみられた(1.45[1.09-1.93],6.02[2.21-16.39]).結論として,小学生における口唇閉鎖力について9歳前後で口唇閉鎖力に影響する要因が異なることが考えられた.口唇閉鎖力の増加に影響する要因として,9歳未満の対象者では現在歯数が,また,9歳以上の対象者では,年齢,肥満との関連がみられた.口唇閉鎖力が低値であることに影響する要因として,9歳未満でいびきと関連していた.(著者抄録)

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Other Link： https://search-tp.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2022&ichushi_jid=J00440&link_issn=&doc_id=20220511210002&doc_link_id=10.5834%2Fjdh.72.2_92&url=https%3A%2F%2Fdoi.org%2F10.5834%2Fjdh.72.2_92&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVES: Root surface caries experience tends to increase with age. The purpose of this longitudinal study was to evaluate the relationship between aspects of dietary intake, including milk and sucrose in coffee or tea (SCT), and root surface caries in older Japanese individuals. METHODS: 303 community-dwelling older individuals (age 75 years) were enrolled for analysis. All participants underwent a dental examination at baseline and then annually from 2003 to 2008 (ie six times over a 5-year period). A disease event was considered to have occurred when root surface caries was detected on a previously sound or nonexposed root surface. Over the observation period, disease events in each year were counted. Dietary habits during the preceding month were evaluated using a brief self-administered diet history questionnaire (BDHQ) in 2003 and 2008. Poisson regression analysis performed crude and adjusted increment-rate ratios (IRRs) for root surface caries and the intake of milk and SCT. RESULTS: The adjusted increment-rate ratio (IRR) of the increment of root surface caries for participants in the highest SCT tertile was 1.72 (95%CI: 1.40-2.14) compared with the referent group. In addition, for the amount of milk intake, the adjusted IRR in the highest tertile was 0.63 (95% CI: 0.51-0.78) compared with the referent group. CONCLUSIONS: Much SCT and low milk intake were associated with the increment of root surface caries in community-dwelling older people in Japan. These findings suggest that to help prevent root surface caries, community-dwelling older people in Japan should consume adequate amounts of milk daily and limit their intake of SCT.

DOI： 10.1111/cdoe.12602

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Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVES: Few studies have examined the effect of sucrose intake in coffee or tea (SCT) on dental caries, especially root caries, in elderly people. The purpose of the present study was to examine the associations between SCT and the prevalence of root or coronal caries in community-dwelling elderly Japanese. METHODS: Participants were 370 elders aged 75 years from a larger cohort study of elders in Niigata City, Japan. Dietary habits during the preceding month were assessed with a validated brief self-administered diet history questionnaire (BDHQ). The caries examination was conducted using mirror and ball-pointed periodontal probes under artificial light. Poisson regression analysis was performed to analyze the prevalence-rate ratios (PRRs) between SCT and the root or coronal caries. The number of root or coronal caries was selected as the dependent variable for the analysis. Then, SCT (tertiles labeled low, medium and high) and other 4 variables were selected as independent variables. RESULTS: The PRRs between the number of root caries lesions and SCT were signifi cantly higher in the second (medium intake, 1.38, p ⟨ 0.001) and third tertiles (high intake, 2.07, p ⟨ 0.001). Similar tendencies were seen for the number of coronal caries lesions (PRRs in the second and third tertiles 1.74 and 2.46, respectively, both p ⟨ 0.001). CONCLUSION: A significant positive relationship was observed between sucrose in coffee and tea and the number of coronal or root caries lesions in community-dwelling elderly Japanese.

DOI： 10.1922/CDH_00011Yoshihara05

PubMed

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

Aims: To identify more reliable and cost-effective methods to detect gingivitis, such as visual examinations, questionnaires, and salivary occult blood tests (SOBT).Methods: Sixty-five elementary school students in Yahiko Village, Niigata, Japan were recruited. Questionnaire was used to assess subjective gingival status. Hemoglobin (Hb) and lactate dehydrogenase (LDH) levels were measured by SOBT. Bleeding on marginal probing (BOMP) method at three labial sites per tooth for all anterior teeth was used to examine clinical gingiva condition. Occurrence of at least 1 site with BOMP positive was defined as gingivitis. Visual gingival redness examination was done at the same sites examined by probing.Results: Participants with gingivitis had higher numbers of sites with redness than those without [6 (0.25-12) vs 0 (0-2), p < 0.001]. Participants with more sites with redness had a 1.29-fold higher risk of suffering from gingivitis (p = 0.002). The overall model had a 77.3% probability of predicting a gingivitis event by the number of sites with gingival redness (p < 0.001). Highest Youden Index was 1.453, yielded from the cut-off value of 4-5 sites with gingival redness.Conclusion(s): This study found that a predictive model using visual gingival redness examination is a viable non-invasive screening test for gingivitis. (C) 2019 Japanese Society of Pediatric Dentistry. Published by Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.pdj.2019.05.001

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Language：Japanese   Publisher：一般社団法人 口腔衛生学会  

&lt;p&gt; Assessment of gingivitis is generally dependent on visual examination and probing. Currently, there is no procedure available that is non-invasive, easily performed, objective, and reproducible for the screening of gingivitis. In this study, we investigated whether substances in the gingival crevicular fluid (GCF) can be useful as biomarkers for gingivitis. The participants were 107 elementary school children (fifth and sixth graders) in Kitakyushu City. We collected samples of GCF from each child using a blotting brush and quantitated the levels of &lt;i&gt;α&lt;/i&gt;-1 antitrypsin (A1AT), lactoferrin (Lf), aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH) in the fluid. We then compared the results with oral gingival findings, such as the PMA index (PMA), community periodontal index (CPI), and plaque attachment index (PlI). The PMA and PlI results were binarized into a low-value group and a high-value group and then compared with each GCF substance. Significant differences (&lt;i&gt;p&lt;/i&gt;&lt;0.05) were identified for all substances when compared with the PMA results and for all substances, except LDH, when compared with the PlI results. The cut-off points from the ROC curve analysis for these substances (A1AT, Lf, AST, ALT, ALP, and LDH) compared with the PMA results were 283.8, 152.1, 4.5, 1.5, 2.5, and 26.0, respectively, and those compared with the PlI results were 248.3, 114.4, 2.5, 1.5, and 2.5, respectively. The positive likelihood ratio was approximately 1.5 to 3.0.&lt;/p&gt;&lt;p&gt; These results suggest that A1AT, Lf, AST, ALT, and ALP levels in GCF may be useful as biomarkers for gingivitis screening in children.&lt;/p&gt;

DOI： 10.5834/jdh.69.1_19

CiNii Article

J-GLOBAL

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2019&ichushi_jid=J00440&link_issn=&doc_id=20190207240004&doc_link_id=%2Fdk1dehea%2F2019%2F006901%2F002%2F0019-0026%26dl%3D0&url=http%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fdk1dehea%2F2019%2F006901%2F002%2F0019-0026%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVES: To examine the associations among alcohol consumption level, dietary intake and other lifestyle factors, and periodontal condition, in community-dwelling elderly Japanese of a specific age. BACKGROUND: The relationship between alcohol consumption level and periodontitis is a controversial issue. METHODS: Participants were 438 dentate elders aged 73 years from a larger cohort survey of elders in Niigata City, Japan. Data collected from oral examination of each participant, including number of the existing teeth, mean probing pocket depth and mean clinical attachment level (CAL) were used for the analyses. A semiquantitative food frequency questionnaire and a lifestyle habit questionnaire were used to assess food and alcohol consumption, smoking experience, frequency of tooth brushing, interdental brush use, and visits to a dental clinic during the previous year. Blood glucose control was assessed by the glycated haemoglobin (HbA1c) level. Body mass index was calculated from height and weight measurements. The relationships between each variable and the individual mean CAL were analysed by univariate and multivariate analyses. RESULTS: According to logistic regression analysis, the mean CAL was significantly associated with the number of existing teeth (odds ratio [OR] = 0.90; P < .001), being a heavy drinker (OR = 2.44; P < .05), and smoking experience (OR = 2.37; P < .01). CONCLUSION: This study showed that increased mean CAL was significantly associated with heavy drinking in community-dwelling elderly Japanese (aged 73 years) compared with non-drinking. Our results provide new evidence that high alcohol consumption is associated with an increased risk of periodontal disease and its progression.

DOI： 10.1111/ger.12335

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Language：Japanese   Publisher：(一社)日本障害者歯科学会  

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Other Link： https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2016&ichushi_jid=J02489&link_issn=&doc_id=20160725150015&doc_link_id=10.14958%2Fjjsdh.37.192&url=https%3A%2F%2Fdoi.org%2F10.14958%2Fjjsdh.37.192&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

Language：English   Publishing type：Research paper (scientific journal)   Publisher：WILEY-BLACKWELL  

OBJECTIVE: To investigate medications that are related to volume of saliva in the elderly. BACKGROUND DATA: In the elderly, many cases of mouth dryness may represent side effects of medication. MATERIALS AND METHODS: The volume of unstimulated saliva was measured for 30 s (cotton roll test), and with stimulation for 3 min (gum test) in 368 subjects 79-80 years old (177 men, 191 women). Medications were investigated using subject's medication notebooks. RESULTS: Mean volumes of unstimulated and stimulated saliva were 0.14±0.13 and 4.30±2.54 ml respectively. Significant differences were seen between gender and mean volume of saliva. The volume of unstimulated saliva was 0.16±0.15 ml for men and 0.11±0.10 ml for women. The volume of stimulated saliva was 4.99±2.67 ml for men and 3.67±2.25 ml for women. The percentage of subjects taking medication was 64.7% (238/368). Mean number of medications was 2.08±2.26, with no significant difference with gender (2.01±2.37 for men, 2.16±2.16 for women). In a stepwise multiple regression analysis with volume of saliva as the objective variable and number of drugs by category as explanatory variables, significant explanatory variables in addition to gender and number of medications were blood-coagulating agents, Ca antagonists and peptic ulcer drugs for volume of unstimulated saliva, and diabetes medications and peptic ulcer drugs for volume of stimulated saliva. CONCLUSION: These findings suggest that differences exist between gender in volume of saliva for elderly individuals, and that the volume of saliva is affected by the number and type of medications.

DOI： 10.1111/j.1741-2358.2009.00358.x

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Language：Japanese   Publisher：(一社)日本口腔衛生学会  

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Language：Japanese   Publisher：(一社)日本口腔衛生学会  

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Language：Japanese   Publisher：日本歯科衛生教育学会  

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Authorship：Lead author   Language：Japanese   Publisher：(公社)日本小児歯科学会  

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Language：Japanese   Publisher：(一社)日本口腔衛生学会  

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Language：Japanese   Publisher：(一社)日本口腔衛生学会  

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Language：Japanese   Publisher：(一社)日本口腔衛生学会  

J-GLOBAL

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Language：Japanese   Publisher：(一社)日本老年歯科医学会  

J-GLOBAL

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Language：Japanese   Publisher：日本歯科衛生学会  

J-GLOBAL

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Language：Japanese   Publisher：新潟歯学会  

J-GLOBAL

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Language：Japanese   Publisher：日本歯科衛生学会  

J-GLOBAL

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Language：Japanese   Publisher：日本歯科衛生学会  

J-GLOBAL

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Language：Japanese   Publisher：(一社)日本老年歯科医学会  

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