Faculty Profiles - YOSHIHARA Akihiro

Papers - YOSHIHARA Akihiro

Division display 321 - 340 of about 365 ／ All the affair displays >>

Fc gamma RIIIb genotypes and smoking in periodontal disease progression among community-dwelling older adults in Japan

A Yoshihara, N Sugita, K Yamamoto, T Kobayashi, T Hirotomi, H Ogawa, H Miyazaki, H Yoshie

JOURNAL OF PERIODONTOLOGY 76 ( 2 ) 250 - 255 2005.2

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER ACAD PERIODONTOLOGY

Background: Fc gamma RIIIb genotypes and smoking are risk factors for periodontal disease. However, the interaction of Fc gamma RIIIb-NA1-NA2 polymorphism with smoking remains unclear. The purpose of this study was to determine if Fc gamma RIIIb-NA1-NA2 polymorphism and smoking are associated with periodontal disease progression among elderly people.
Methods: Among 70-year-old subjects, 164 with neither diabetes mellitus nor blood sugar >= 140 mg/dl, who had more than 20 teeth and who could participate in both the baseline and the follow-up examinations were included in the study. The NA1 group comprised subjects with Fc gamma RIllb-NA1NA1 genotype (N = 53), while the NA2 group included subjects with Fc gamma RIIIb-NA1NA2 or NA2NA2 genotype (N = 111). We examined the progression of periodontitis by measuring attachment loss during 3 years.
Results: The frequency of subjects who showed >= 4 mm additional attachment loss at one or more sites was 55.6% for smokers and 37.2% for non-smokers. The odds ratio (OR) was 2.13 (confidence interval [CI]: 0.92 to 4.76). We found a better association between periodontal progression and smoking in the NA2 group. The OR for smokers was 3.03 (CI: 1.12 to 8.33, P = 0.028). Additionally, the mean number of sites with >= 4 mm additional attachment loss per person between smokers and non-smokers in the NA2 group or between smokers and non-smokers in the NA1 group was 2.90 +/- 3.42 and 0.74 +/- 1.53 or 0.57 +/- 0.79 and 0.68 +/- 1.03, respectively (P < 0.001; analysis of variance [ANOVA]).
Conclusion: Our results may suggest an association between smoking and periodontal disease progression in elderly people with Fc gamma RIIIb-NA2 polymorphism.

DOI： 10.1902/jop.2005.76.2.250

Serum vitamin C-periodontal relationship in community-dwelling elderly Japanese Reviewed

N Amarasena, H Ogawa, A Yoshihara, N Hanada, H Miyazaki

JOURNAL OF CLINICAL PERIODONTOLOGY 32 ( 1 ) 93 - 97 2005.1

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

Objective: To determine the relationship between serum vitamin C and periodontitis as estimated by clinical attachment loss (CAL) in community-dwelling elderly Japanese.
Material and Methods: This analysis was confined to 413 Niigata citizens aged 70 years in whom the data for serum vitamin C and CAL were available. High-pressure liquid chromatography method was used to ascertain the serum vitamin C levels while CAL was assessed on six sites of all teeth present including third molars by means of pressure-sensitive probes. Other variables included gender, smoking, toothbrushing frequency, number of teeth present and random blood sugar levels.
Results: Serum vitamin C concentration was inversely related to CAL (r=-0.23, p<0.00005) at bivariate level. Multiple linear regression analysis showed that CAL was 4% greater in subjects with lower serum vitamin C levels than in subjects with higher serum vitamin C levels notwithstanding smoking, diabetes, oral hygiene, gender or number of teeth present.
Conclusion: The findings suggested that serum vitamin C might have relatively weak but a statistically significant relationship with periodontitis in this elderly population.

DOI： 10.1111/j.1600-051X.2004.00643.x

Reliability and Validity of Global Ratings for Competency Assessment : An Analysis of and OSCE at Niigata University Faculty of Dentistry

OKIJI Takashi, FUKUSHIMA Masayoshi, YOSHIBA Kunihiko, KOBAYASHI Hiroshi, YOSHIHARA Akihiro, HOSHINA Hideyuki, TOMIZAWA Mieko, TAKAGI Ritsuo, MAEDA Takeyasu, YAMADA Yoshiaki

20 ( 1 ) 135 - 141 2004.12

客観的臨床能力試験(OSCE)における概略評定の信頼性と妥当性平成15年度新潟大学歯学部OSCEの解析 Reviewed

興地隆史, 福島正義, 吉羽邦彦, 小林博, 葭原明弘, 星名秀行, 富沢美恵子, 高木律男, 前田健康, 山田好秋

日本歯科医学教育学会雑誌 Vol20(1) 135 - 141 2004.12

Investigation on reproducibility of the term for classification of occlusion Reviewed

AOTO Seiji, FUKAMACHI Hiroomi, YOSHIHARA Akihiro, SAITO Isao

63 ( 2 ) 95 - 99 2004.12

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

The purpose of this study was to evaluate the clinical availability of classification of occlusion proposed in "Classification of Occlusion in Clinical Orthodontics" published by Yogosawa Society of Orthodontists in 2000. Four orthodontists categorized study casts of one hundred orthodontic patients according to this classification of occlusion. The procedure was repeated two months later to assess intra-examiner agreement. Weighted kappa (κ_w) for intra- and inter-examiner agreement were calculated. An interpretation of κ_w was made on the basis of sensitivity and specificity by Landis and Altman. κ_w for intra-examiner agreement showed a value of 0.67 on an average, which implies substantial agreement. Both an initial and the second κ_w for inter-examiner agreement were more than O . 62 on average, indicating reliable and substantial agreement. Repeatability among four examiners was more dependent on familiarity with this term rather than on clinical experiences. With respect to repeatability among various types of malocclusion, "protruding upper bite" and "protruding lower bite" showed substantial agreement while "deep bite" and "diverted bite" indicated moderate agreement. (Orthod Waves-Jpn Ed 63(2) : 95-99, 2004)

Other Link： https://projects.repo.nii.ac.jp/?action=repository_uri&item_id=171805

Association between Serum IgG Subclass Levels and Periodontal Status in an Elderly Japanese Population Reviewed

KOBAYASHI Takao, NAKASHIMA Keisuke, YOSHIHARA Akihiro, MIYAZAKI Hideo, KOWASHI Yusuke

JOURNAL OF THE JAPANESE ORGANISATION FOR RESEARCH OF PERIODONTOLOGY 46 ( 1 ) 31 - 38 2004.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JAPANESE SOCIETY OF PERIODONTOLOGY

Previous reports suggested that the association between serum IgG subclass levels and periodontal status is influenced by genetic and environmental factors, such as race and smoking. Japanese population living in the same area may be appropriate for evaluating this association due to similar racial and environmental factors. The present cross-sectional investigation studied this association in an elderly population of 451 subjects aged, 71 years residing in Niigata, Japan. Smokers and edentulous individuals were excluded. Dentulous nonsmokers were classified into 2 groups based on the number of teeth : those with fewen than 20 teeth and those with 20 or more teeth. The percentage of sites with PAL≥4mm and serum IgG 1 levels was significantly higher in subjects with fewer than 20 teeth. A significant negative correlation was observed between the number of teeth and IgG 1 subclass levels. This data indicates that higher levels of serum IgG 1 are associated with reduced numbers of teeth in a Japanese elderly population. Longitudinal investigation is necessary to clarify the reason for this in periodontitis-susceptible individuals.

DOI： 10.2329/perio.46.31

Other Link： http://search.jamas.or.jp/link/ui/2004199192

The Relationship between Appetite and Quality of Life in Community-dwelling Older Adults Reviewed

YOSHIHARA Akihiro, SEIDA Yoshikazu, KATAOKA Shojiro, HANADA Nobuhiro, MIYAZAKI Hideo

JOURNAL OF DENTAL HEALTH 54 ( 3 ) 241 - 248 2004.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Oral Health

There are many elderly people who enjoy meals in their daily life. The purpose of this study was to evaluate the relationship between appetite and quality of life, controlling the known confounding factors. In this study, 600 subjects aged 70 years were included. In order to integrate quality of life, we used a face scale which has five face figures considered appropriate for a five-stage evaluation. A questionnaire survey was conducted to evaluate appetite. In addition, we obtained data on physical factors, healthy actions, social factors and oral symptoms. The comparison of the appetite, score of oral symptoms and other general factors between two groups divided according to the face scale score was investigated by multiple logistic regression analysis. We selected two kinds of dependent variables according to each face scale score (models 1 and 2). Appetite, total score of oral symptoms, Tokyo Metropolitan Institute of Gerontology index (TMIG index), amount of sleep and gender as independent variables were selected in both models. In model 1, appetite (Odds ratio : 2.77, p<0.05), total score of oral symptoms (Odds ratio : 1.25, p<0.05) , TMIG index (Odds ratio : 1.25, p<0.0l) were significant. On the other hand, in model 2, appetite (Odds ratio : 3.23, p<0.00l), TMIG index (Odds ratio : 1.24, p< 0.001) and amount of sleep (Odds ratio : 1.72,p<0.0l) were significant. Appetite was associated significantly with the face scale in both models 1 and 2, and the total score of oral symptoms was associated with the face scale in model 1. This study suggests that there was a significant relationship between appetite and quality of life in community-dwelling older adults, and a recovery of oral symptoms was necessary for improvement in the quality of life.

DOI： 10.5834/jdh.54.3_241

The long term effect of fluoride mouthrinse on changes in salivary levels of mutans streptococci in school children Reviewed

Akihiro Yoshihara, Shihoko Sakuma, Jing Wang, Hideo Miyazaki

Journal of Dental Health 54 233 - 240 2004.12

歯学教育プログラムへのPBL教育の導入南カリフォルニア大学歯学部における実態調査 Reviewed

安島久雄, 小野和宏, 前田健康, 永田昌毅, 高木律男, 山田好秋, 興地隆史, 魚島勝美, 葭原明弘, 花田晃治

日本歯科医学教育学会雑誌 Vol20(1) ( 1 ) 166 - 173 2004.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：(一社)日本歯科医学教育学会

2001年12月に新潟大学の教員6名が南カリフォルニア大学歯学部を訪れ,米国人学生とともにPBL(問題解決型学習)教育を1週間体験した.また,PBLの概念,教科課程編成法,教材の作成法,評価方法などについて資料収集を行った.その結果,PLBでは問題への解答よりも学習者中心の問題解決過程を通じた理解の育成が重視されること,教員の役割は知識の伝授ではなくグループの作業プロセスを支援して学習目標への到達を促すものであることなどが確認された

A longitudinal study of the relationship between periodontal disease and bone mineral density in community-dwelling older adults

A Yoshihara, Y Seida, N Hanada, H Miyazaki

JOURNAL OF CLINICAL PERIODONTOLOGY 31 ( 8 ) 680 - 684 2004.8

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

Objective: Bone loss is a common feature of periodontitis and osteoporosis. Both diseases may share common etiologic agents which may either affect or modulate the process of both diseases. The purpose of this study was to evaluate the relationship between systemic bone mineral density (BMD) and periodontal disease among older people.
Materials and Methods: Among all 4542 inhabitants aged 70 years according to a registry of residents in Niigata city in Japan, 600 people were selected randomly. One hundred and eighty-four subjects who did not have diabetes mellitus, whose blood sugar was <140 mg/dl, who had more than 20 teeth, who were non-smokers, and who did not take medication for osteoporosis, were included in the study. Four dentists performed clinical evaluations on probing attachment level (PAL). We also utilized the data on BMD of the heel, which we measured using an ultrasound bone densitometer. Follow-up clinical surveys were done by measuring PAL after 3 years. Finally, 179 subjects who could participate in both the baseline and the follow-up examinations were included in the analysis. After dividing the subjects into an osteopenia group (OG) and non-osteopenia group (NOG), we evaluated the relationship between BMD and the number of progressive sites which had greater than or equal to3 mm additional attachment loss during 3 years after controlling the known confounding factors.
Results: The mean number of progressive sites for the OG and the NOG, respectively, were 4.65+/-5.51 and 3.26+/-3.01 in females and 6.88+/-9.41 and 3.41+/-2.79 in males. Two-way analysis of variance was performed to discriminate among effects of gender, BMD, and gender-BMD interaction. A significant effect of BMD (OG or NOG, p=0.043) with a significant interaction (p=0.038) was observed. Furthermore, BMD was associated with the number of progressive sites which had greater than or equal to3 mm additional attachment loss during the 3 years (p=0.001) by multiple linear regression analysis.
Conclusions: This study suggested that there was a significant relationship between periodontal disease and general BMD.

DOI： 10.1111/j.1600-051X.2004.00548.x

A longitudinal study of the relationship between periodontal disease and bone mineral density in community-dwelling older adults Reviewed

A Yoshihara, Y Seida, N Hanada, H Miyazaki

JOURNAL OF CLINICAL PERIODONTOLOGY 31 ( 8 ) 680 - 684 2004.8

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

Objective: Bone loss is a common feature of periodontitis and osteoporosis. Both diseases may share common etiologic agents which may either affect or modulate the process of both diseases. The purpose of this study was to evaluate the relationship between systemic bone mineral density (BMD) and periodontal disease among older people.
Materials and Methods: Among all 4542 inhabitants aged 70 years according to a registry of residents in Niigata city in Japan, 600 people were selected randomly. One hundred and eighty-four subjects who did not have diabetes mellitus, whose blood sugar was <140 mg/dl, who had more than 20 teeth, who were non-smokers, and who did not take medication for osteoporosis, were included in the study. Four dentists performed clinical evaluations on probing attachment level (PAL). We also utilized the data on BMD of the heel, which we measured using an ultrasound bone densitometer. Follow-up clinical surveys were done by measuring PAL after 3 years. Finally, 179 subjects who could participate in both the baseline and the follow-up examinations were included in the analysis. After dividing the subjects into an osteopenia group (OG) and non-osteopenia group (NOG), we evaluated the relationship between BMD and the number of progressive sites which had greater than or equal to3 mm additional attachment loss during 3 years after controlling the known confounding factors.
Results: The mean number of progressive sites for the OG and the NOG, respectively, were 4.65+/-5.51 and 3.26+/-3.01 in females and 6.88+/-9.41 and 3.41+/-2.79 in males. Two-way analysis of variance was performed to discriminate among effects of gender, BMD, and gender-BMD interaction. A significant effect of BMD (OG or NOG, p=0.043) with a significant interaction (p=0.038) was observed. Furthermore, BMD was associated with the number of progressive sites which had greater than or equal to3 mm additional attachment loss during the 3 years (p=0.001) by multiple linear regression analysis.
Conclusions: This study suggested that there was a significant relationship between periodontal disease and general BMD.

DOI： 10.1111/j.1600-051X.2004.00548.x

The Effect of Chewing Ability on the Dietary Intake of Healthy Elderly People Reviewed

KANMORI Hideki, YOSHIHARA Akihiro, ANDO Yuichi, MIYAZAKI Hideo

JOURNAL OF DENTAL HEALTH 53 ( 1 ) 13 - 22 2003.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Oral Health

Recenly in the field of clinical dentistry, and particularly in gerodontics, there has been a growing awareness of the importance of nutrition. A lack of chewing ability might be associates with nutritional deficiency, but there is hardly any substantial evidence to support this assumption. This study investigated the effect of chewing ability on intake of total calories, and nutrients by healthy elderly people. The study sample consisted of 512 elderly residents in Niigata City (265 males, 247 females) aged 70 years, who were in good general health and did not require as stance to perform their daily activities. Chewing ability was divided into two categories : being able to chew all foods (15 test foods) was considered "good", and not being able to chew any of the foods was considered "poor". To determine quantitative food intake, a semi-quantitative food frequency questionnaire was utilized during interviews by nutritionists. A personal interview was performed about lifestyle and oral health. QOL (Quality of life) was evaluated using a "Face Scale". Oral examinations, body measurements and blood tests were performed. We evaluated the relationship between chewing ability and subjective symptoms of oral health using odds ratio. Furthermore, relationships between chewing ability and total calorie intake, nutrient and food were investigated using a linear multiple regression model. Poor chewing ability was found in 48% of males and 60% of females. The mean number of teeth present was 17.88 (SD=9.49) for males and 17.01 (SD=9.00) for females. The mean total calorie intake was 1,706.3 kcal (SD=350.8) for males and 1,474.9 kcal (SD=252.3) for females. The variables that significantly affect low chewing ability and the odds ratios were gender (female 1.62), number of teeth present (edentulous participants 8.51, participants with 1-10 teeth 6.03, participants with 11-20 teeth 5.29 compared with participants with 21 or more teeth), the presence of swelling and pain in the gums (2.47), the presence of mobile teeth (1.92), the degree of saliva flow (sufficient 3.13, undetermined 1.70), lower QOL (2.02). In males, total calorie intake and vegetable and fruit intake were significantly lower in the poor chewing category than in the good category according to multiple regression analysis. In females, there was no significant association between the 2 chewing ability categories. Low intake of vegetables and fruits leads to low dietary fiber and vitamin intake. Especially vitamin C, E and carotene are known as antioxidants, and adequate intake of these were thought to prevent cardiovascular disease and gastro-intestinal disease. Lower chewing ability might be a risk factor for these diseases in healthy males aged 70 years or older. In conclusion, the findings suggested that chewing ability might affect total calorie intake and vegetable and fruit intake in healthy males aged 70 years or older.

DOI： 10.5834/jdh.53.1_13

Root Caries Prevalence and Association between Root Caries and Coronal Caries in the Elderly Reviewed

TAKANO Naoko, YOSHIHARA Akihiro, ANDO Yuichi, OGAWA Hiroshi, HIROTOMI Toshinobu, YAMAGA Takayuki, HANADA Nobuhiro, MIYAZAKI Hideo

JOURNAL OF DENTAL HEALTH 53 ( 5 ) 592 - 598 2003.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Oral Health

The purpose of this study was to investigate the prevalence and intraoral distribution of root caries in the elderly, and to identify the association between root caries and coronal caries. Six hundred noninstitutionalized adults aged 70 years in Niigata, Japan were examined for their oral status and general health status. A total of 544 subjects identified as dentate was available for assessment. The prevalence of root caries was evaluated as the percentage of the subjects with one or more root caries and the mean number of teeth with root caries. The intraoral distribution was evaluated as the mean percentage of exposed root surfaces affected by root caries in terms of tooth surface (buccal, lingual, distal, mesial) and tooth group (incisor, canine, premolar, molar). In the analysis of the associations, subjects were divided into 4 groups according to the number of coronal caries first, and then the prevalence of root caries was evaluated in each group. Next, logistic regression analysis where the dependent variable was one or more root caries and the independent variables including the number of teeth with coronal caries was performed. The percentage of male subjects with one or more root caries (DF) was 56.9% and that of female subjects was 53.3%. The mean number of root DFT was 1.81 (SD=2.41) per person for males and that for females was 1.41 (SD=1.93) per person, respectively. As for untreated root caries (D), the percentage of male subjects with one or more root D was 21.7% and that of female subjects was 19.8%. The mean number of root DT for males was 0.46 (SD=1.10) per person and that for females was 0.32 (SD=0.81) per person. The tooth type most commonly affected by root caries in the maxilla was canine and in the mandible it was premolar. The percentage of exposed root surfaces affected by root caries was 17.5% and 11.5%, respectively. As for tooth surface distribution, the buccal surfaces were the most commonly affected with a percentage of 15.8%. The mean number of teeth with root caries and the percentage of subjects with root caries increased with the number of coronal caries. Logistic regression analysis indicated that the prevalence of coronal caries was significantly associated with that of root caries (odds ratio=1.08, p<0.001) after adjusting for other oral variables. In conclusion, the results suggest that the prevalence of root caries in the elderly was high, and the prevalence of coronal caries was associated with root caries prevalence.

DOI： 10.5834/jdh.53.5_592

Factors associated with root caries incidence in an elderly population

Naoko Takano, Yuichi Ando, Akihiro Yoshihara, Hideo Miyazaki

Community Dental Health 20 ( 4 ) 217 - 222 2003.12

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

Objective: To identify baseline factors associated with future root caries development in an elderly population. Basic research design Oral health and general health status examinations were carried out at baseline and after one and two years. In order to identify risk predictors of root caries with a different degree of robustness, three multiple logistic regression analyses where the dependent variables were one, two and three or more disease events were performed. Participants: Six hundred noninstitutionalised adults aged 70 in Niigata, Japan took part in the baseline examination. A total of 373 subjects were followed up for two years and identified as dentate at the two-year examination. Results: During the period of study, 35.9% of subjects developed at least one new root caries lesion. The mean number of new root caries lesions per subject was 0.9 (sd=1.7). Logistic regression analyses indicated that having one or more root D surface and mean LA ≥3.6 mm were the most robust risk predictors, having two or more prosthetic crowns, non use of interdental brushes or dental floss and LB ≥105 CFU/ml were moderately robust risk predictors, and a Body Mass Index &lt
20 was the least robust risk predictor. Conclusions: These findings suggest that oral health status is a good risk predictor, and poor general health indicated by a low Body Mass Index may also contribute to root caries occurrence in this elderly population.

新潟大学歯学部卒前教育における客観的臨床能力試験(OSCE)の導入 Reviewed

興地隆史, 福島正義, 葭原明弘, 子田晃一, 小野和宏, 小林博, 魚島勝美, 小山純市, 植田耕一郎, 高木律男, 前田健康, 花田晃治

日本歯学教育学会誌 18 ( 2 ) 300 - 307 2003.12

Epidemiological Study on Marginal and Apical Periodontal Conditions in Japanese Elderly People Using Panoramic Radiograph Reviewed

HIURA Kenji, YOSHIHARA Akihiro, MIYAZAKI Hideo

JOURNAL OF DENTAL HEALTH 53 ( 2 ) 130 - 136 2003.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society for Oral Health

The purpose of this study was to evaluate the radiographically-detected marginal and apical periodontal conditions in elderly people. The subjects were 100 (57 males, 43 females) people at least 70 years old who underwent oral examinations in Niigata City in 1998 (baseline examination), 1999 and 2000. The following parameters calculated on panoramic radiograph were studied for alveolar bone loss and apical periodontal conditions (the existence of periapical lesions, and root canal fillings). We compared subjects by number of teeth and Eichner index (following EI). Third molars were excluded from all analyses. In the baseline study, the rate of nonvital teeth was 36.9%, and the rate of periapical lesions was 35.6%. The mean alveolar bone loss was 30.1% (SD=12.1) in 1998 (baseline examination) and 31.3% (SD=12.2) in 2000. This increase was significant (p<0.05). The mean alveolar bone loss compared by number of teeth was 36.4% in those with 1-9 present teeth, 34.0% for 10-19 present teeth, 27.5% for 20 or more present teeth. The number of teeth lost in 2 years was 50, 7 vital teeth and 43 nonvital. The results of tooth-level multiple logistic regression analysis showed that the incidence of 50% or more alveolar bone loss was high in anterior teeth, molars, males, and 20 or more present teeth. Tooth-level multiple logistic regression analysis showed that the incidence of tooth loss was high in nonvital teeth, teeth with periapical lesions, 50% or more alveolar bone loss, and teeth with clasps. These findings suggest that elderly people with 20 or more present teeth have a low risk of alveolar bone loss and tooth loss. They further suggested that preservation of the pulp was associated with decline of the risk factors for tooth loss.

DOI： 10.5834/jdh.53.2_130

Improvement in Gingivitis by School Based Prevention Programme at the Elementary School with the Use of Dental Floss after 18 Months Reviewed

Akihiro Yoshihara, Kouichi Fukai, Yuko Morozumi, Toshinobu Hirotomi, Hideo Miyazaki

Journal of Dental Health 53 91 - 97 2003.12

Factors associated with root caries incidence in an elderly population Reviewed

Naoko Takano, Yuichi Ando, Akihiro Yoshihara, Hideo Miyazaki

Community Dental Health 20 ( 4 ) 217 - 222 2003.12

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

Objective: To identify baseline factors associated with future root caries development in an elderly population. Basic research design Oral health and general health status examinations were carried out at baseline and after one and two years. In order to identify risk predictors of root caries with a different degree of robustness, three multiple logistic regression analyses where the dependent variables were one, two and three or more disease events were performed. Participants: Six hundred noninstitutionalised adults aged 70 in Niigata, Japan took part in the baseline examination. A total of 373 subjects were followed up for two years and identified as dentate at the two-year examination. Results: During the period of study, 35.9% of subjects developed at least one new root caries lesion. The mean number of new root caries lesions per subject was 0.9 (sd=1.7). Logistic regression analyses indicated that having one or more root D surface and mean LA ≥3.6 mm were the most robust risk predictors, having two or more prosthetic crowns, non use of interdental brushes or dental floss and LB ≥105 CFU/ml were moderately robust risk predictors, and a Body Mass Index &lt
20 was the least robust risk predictor. Conclusions: These findings suggest that oral health status is a good risk predictor, and poor general health indicated by a low Body Mass Index may also contribute to root caries occurrence in this elderly population.

Association between serum albumin and root caries in community-dwelling older adults Reviewed

A. Yoshihara, N. Hanada, H. Miyazaki

Journal of Dental Research 82 ( 3 ) 218 - 222 2003

Language：English Publishing type：Research paper (scientific journal) Publisher：Intern. and American Associations for Dental Research

Recently, associations between dental diseases and the general health condition have been reported. The purpose of this study was to evaluate, by serum albumin concentrations, the relationship between the general health condition and root caries. We randomly selected 763 individuals (600 70-year-olds and 163 80-year-olds) living in Niigata City, Japan. The variables body composition, blood measurements, daily nutrient intakes, and root caries were measured. The relationship between root caries and serum albumin concentration was evaluated. The differences in serum albumin concentrations between subjects with untreated root caries (DT = 0 and DT ≥ 3) were 75.56 mg/dL in 70-year-olds and 202.97 mg/dL in 80-year-olds (p &lt
0.05, ANOVA). The findings of the present study indicated that a relationship between root caries and serum albumin concentration in these elderly subjects is highly possible.

DOI： 10.1177/154405910308200313

Longitudinal study on periodontal conditions in healthy elderly people in Japan Reviewed

T Hirotomi, A Yoshihara, M Yano, Y Ando, H Miyazaki

COMMUNITY DENTISTRY AND ORAL EPIDEMIOLOGY 30 ( 6 ) 409 - 417 2002.12

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

Objectives: A strategy for the control of periodontal disease progression is required to prevent tooth loss in older people. However, detailed epidemiological data on periodontal conditions in elderly people is limited. The purpose of the present study is to describe the natural history of periodontal disease and to evaluate the intraoral factors relating to the disease progression in systemically healthy elderly people. Methods: In the cross-sectional study, 599 and 162 subjects aged 70 and 80 years, respectively, were examined. Of those subjects aged 70 years, 436 (73%) participated in the 2-year longitudinal study. Pocket depth (PD) and attachment level (AL) were measured for all functioning teeth at six sites per tooth. In the cross-sectional study, AL of 4 mm or greater and 7 mm or greater were defined as moderate and severe disease, respectively. In the longitudinal study, a change in AL of 3 mm or greater at each site was defined as periodontal disease progression. Results: In the cross-sectional study, 97.1% of the subjects had at least one site of AL of 4 mm or greater (4 + mm). The prevalence of AL of 7 mm or greater (7 + mm) was 47.9%, with 2.8 affected teeth per person in those with AL 7 + mm. These findings reveal that periodontal disease is extremely widespread in the elderly population. However, very few had many teeth with severe periodontal conditions. In the longitudinal study, 75.1% experienced attachment loss of 3 mm or greater (3+ mm) during the 2-year study period. Of those subjects who experienced attachment loss, a mean of 4.7 teeth exhibited attachment loss. Multivariate logistic regression showed that both the highest AL in each tooth at baseline and abutment teeth for removable partial dentures were significantly related to periodontal disease progression as well as tooth loss incidence. Conclusions: These results suggest that teeth with poor periodontal conditions as well as abutment teeth for removable partial dentures were significant intraoral factors relating to periodontal disease progression as well as tooth loss.

DOI： 10.1034/j.1600-0528.2002.00005.x

　 PREV - NEXT 　

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19