• Journal of Korean society of Dental Hygiene
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• v.16 no.1
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• pp.19-25
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• 2016

Objectives: The purpose of the study is to investigate the relationship between the number of remaining teeth and depression in Korean adults. Methods: The subjects were the respondents of the Sixth Korea National Health and Nutrition Examination Survey(KNHANES). The questionnaire consisted of the general characteristics of the subjects, number of remaining teeth, and prevalence of depression. relationship of the prevalence of depression and the number of remaining teeth. The data were analyzed by chi-square test, t-test, and logistic regression using SPSS, and 95% confidence intervals were calculated. Results: There was a significant difference in number of remaining teeth and odds ratio(OR) was 1.940(95% confidence interval: 1.062-3.544). Statistically significant difference was not observed after adjusting for age and gender and OR was 1.515(95% confidence interval: 0.823-2.787). And Statistically significant difference was not observed after adjusting for age, gender and other variables. The OR was 1.399(95% confidence interval: 0.757-2.586). Conclusions: Depression in the adults was related to the number of remaining teeth. But there was no significant difference in the number of remaining teeth after adjusted for age, gender, and other factors.

• Journal of Korean society of Dental Hygiene
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• v.13 no.4
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• pp.693-700
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• 2013

Objectives : The purpose of this study was to investigate the number of remaining natural teeth in elderly people visiting dental care services and the factors affecting dental visit. This study will contribute the development of oral health promotion programs for the elderly people. Methods : Subjects were 172 elderly people recruited from 217 senior citizens visiting public oral health care services in 16 districts in Busan. They completed self-Corresponding Author reported questionnaires. Results : Elderly people had less remaining natural teeth (p<0.001). The remaining natural teeth ($15.07{\pm}8.75$) of the health insurance beneficiary were majority than those of the medicaid ($8.78{\pm}8.45$)(p<0.001). The respondents with better oral health condition had more remaining natural teeth (r=0.317, p<0.001), and those who were more worried about oral health had less remaining natural teeth (r=-0.599, p<0.001). Aging accelerates loss of natural teeth (p<0.001) of 3.203. Approximately 2.188 remaining teeth will be preserved by oral health care improvement (p=0.009). Conclusions : Frequent dental clinic visit will prevent natural teeth loss in the elderly people. Toothbrushing is the most efficient method of oral health care in the elderly people. Awareness towards oral health care is the motivation to preserve natural teeth in the elderly people.

• Journal of Korean society of Dental Hygiene
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• v.14 no.3
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• pp.319-326
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• 2014

Objectives : The purpose of the study is to investigate the factors affecting the bone density and the relationship between bone density and remaining teeth by using data from 2007 to 2009 of the 4th Korean National Health and Nutrition Examination Survey(KNHANES). Methods : The subjects were 1,829 postmenopausal women over 50 years old from the data of the 4th KNHANES. Results : The bone density had the significant difference in 'age' and 'level of education' and remaining teeth had the significant difference in age, monthly income and level of education. The bone mineral density and remaining teeth had the significantly different from subjective general health, smoking, drinking, physical activity. The oral health behaviors and remaining teeth had the significantly associated in subjective oral health status, frequency of tooth brushing, use of auxiliary oral hygiene product, and recent oral examination. Conclusions : The number of remaining teeth is below 9.27 compared with the normal group.

• Journal of Digital Convergence
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• v.14 no.12
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• pp.537-544
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• 2016

This study was to investigate their relevance between oral health behaviors and number of remaining teeth of the elderly welfare recipients through the fluoride and scaling of the business. Researcher collected 660 subjects over 60 elderly welfare recipients investigated self-administered survey and use denture and number of remaining teeth though oral examination. Increasingly age number of teeth remaining reduced, there is a difference on the number of remaining teeth according to gender, age, the use of oral hygiene products, self diagnosis oral condition, brushing after lunch and showed significant difference(p<0.05). The remaining number of teeth can be prevented by attention and efforts of subjects. Therefore, we investigated convergent effects of oral health behaviors on number of remaining teeth of the elderly, I hope that oral health care program continually provides expansion of preventive treatment and to maintain the provision of health care about vulnerable group.

• Journal of Korean society of Dental Hygiene
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• v.21 no.5
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• pp.629-637
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• 2021

Objectives: The purpose of this study was to investigate the degree of activity restriction and the number of remaining teeth of the elderly and to analyze the correlation. Methods: Statistical analysis of the collected data was analyzed using the SPSS window program 25.0 version (IBM) using a composite sample for the analysis of the 7th National Health and Nutrition Survey data, and a composite sample multiple logistic regression analysis was performed to confirm the effect of activity restrictions on the number of remaining teeth. Results: As a result of analyzing the effect of activity restriction on the number of remaining teeth, in the model that analyzed only activity restriction variables, the risk ratio of less than 20 remaining teeth was 1.61 times higher and the age-adjusted model, the risk ratio of less than 20 remaining teeth was 1.46 times higher (p<0.001). In the model that corrected all variables, the results were not statistically significant. Conclusions: In this study, the relationship between activity restriction and the number of remaining teeth could be confirmed, and in subsequent studies, more in-depth studies are considered to be needed using sub-variables that specifically reflect the reasons for activity restriction.

• Journal of Dental Rehabilitation and Applied Science
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• v.32 no.1
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• pp.80-86
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• 2016

A few authors have reported good clinical results using double crown removable partial denture (RPD) with a few remaining teeth. Hybrid telescopic double crown is a good indication for a patient with poor periodontal condition and/or few remaining teeth after extraction, especially located in cross-arch position. In this case, there was a poor periodontal condition with teeth mobility. Several teeth with poor prognosis were extracted. Remaining anterior teeth was restored with fixed prostheses and edentulism was restored with Kennedy class I removable partial denture in maxilla. In mandible, it was hard to restore with clasp removable partial prostheses because of bilaterally isolated remaining teeth so that hybrid double crown removable partial denture with friction pin was suitable for this case. The objective of this report is to discuss the characteristics and the utility of hybrid double crown prostheses using a few remaining teeth in mandible.

• Journal of dental hygiene science
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• v.17 no.5
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• pp.447-453
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• 2017

The purpose of this study was to analyze the relationship between objective oral health status determined by dentists, self-perceived subjective oral health status, and oral health related quality of life (OHRQoL) in the elderly. The related factors affecting OHRQoL in the elderly were also surveyed. Four hundred and thirty elderly individuals who visited the three public health centers and four dental clinics in Busan were selected by convenience sampling. Twelve dental hygienists investigated the subjective oral health status and OHRQoL using the 14-item Oral Health Impact Profile (OHIP-14) and twentyone dentists examined the objective oral health status, including healthy remaining teeth, treated remaining teeth, functional remaining teeth, missing teeth, and non-treated missing teeth. Data were analyzed using SPSS ver. 12.0. OHRQoL was higher when oral and periodontal status was perceived as healthy, when there was no toothache, no interference in mastication, and when study subjects had the ability of food softening. It was also higher when study subjects had ${\geq}20$ remaining teeth and <9 missing teeth, and were wearing denture. The related factors affecting OHRQoL of the elderly were the type of medical insurance, toothache, ability of food softening, perception of periodontal status, and the number of healthy remaining teeth. There was a significant relationship between the subjective-objective oral health status and OHRQoL in the elderly. A continuous oral health care system aimed at retaining ${\geq}20$ healthy remaining teeth is needed to improve oral health and OHRQoL for the elderly, especially for the elderly receiving medical aid.

• Journal of Korean society of Dental Hygiene
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• v.16 no.1
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• pp.129-136
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• 2016

Objectives: The purpose of the study is to investigate the relationship between oral health status and body mass index (BMI) in adults over 65 years old. Methods: The study subjects were 4,550 adults over 65 years old from the 5th Korea National Health and Nutrition Examination Survey(KNHANES V) in 2010-2012. Mastication-related oral health status included the number of remaining teeth, and mean number of decayed, missing, and filled permanent teeth(DMFT). Body mass index(BMI, $kg/m^2$) was categorized as underweight(<18.5), normal weight (18.5-22.9), overweight(23.0-24.9), and obese(${\geq}25.0$). Multinomial logistic regression analysis was performed to examine the association of BMI categories with the number of remaining teeth and DMFT. Results: The mean number of DMFT was highest($13.0{\pm}0.7$) in the underweight group and lowest($8.8{\pm}0.3$) in the obese group. Those having less favorable masticatory ability, and fewer number of remaining teeth and no prosthesis, tended to be underweight. Those having a higher number of remaining teeth and prosthetic teeth tended to be overweight or obese. In the multinomial logistic regression analysis, compared with those having 20 or more remaining teeth, including prosthetic teeth, those having less than 20 remaining teeth and no prosthesis had 4.48 times higher odds ratio of being underweight. DMFT was positively associated with underweight, while negatively associated with overweight or obesity. Conclusions: The masticatory ability and dental caries prevention maintained the healthy body weight in adults of old age.

• Journal of Korean society of Dental Hygiene
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• v.18 no.2
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• pp.205-215
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• 2018

Objectives: The purpose of the study is to investigate the relationship between the number of remaining teeth and bone health status among adults over 65 years old. Methods: The study subjects were 1,843 adults over 65 years old drawn from the Korea National Health and Nutrition Examination Survey (KNHANES) in 2008-2010. Oral health status included the number of remaining teeth, and prosthetic appliance status. Bone health statuses were assessed using dual-energy X-ray absorptiometry (DEXA). Bone health statuses were classified into normal (T-score ${\geq}-1.0$), osteopenia (-2.5 < T-score < -1.0), and osteoporosis (T-score ${\leq}-2.5$). Complex samples chi-square test was used to estimate the relationship between the number of remaining teeth and bone health status, and related factors included in the model were analyzed with the complex samples logistic regression analysis. Results: Using the multinomial logistic regression analytic method, the elderly having 20 or more remaining teeth and those having less than 20 remaining teeth with prosthesis were compared. The latter group had 1.89 times higher rate of being diagnosed as having osteoporosis. Conclusions: This study suggests that oral health is an important factor for geriatric osteoporosis. Therefore, in order to prevent fractures due to osteoporosis and osteoporosis in old age, it is necessary to be aware of the relationship between oral health and osteoporosis, and oral health should be considered when preparing preventive management strategies.

• Journal of Korean society of Dental Hygiene
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• v.19 no.5
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• pp.731-742
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• 2019

Objectives: To analyze the association between sleep duration and the number of remaining teeth in people aged 65 years or older in order to provide basic data for improving sleep quality and developing oral health programs for teeth maintenance. Methods: The raw data for the analysis were obtained from the sixth Korean National Health and Nutrition Examination Survey (KNHANES) dataset, conducted between 2013 and 2015. The 4,340 subjects included in the study underwent oral examinations and then proceeded to answer related questions. The collected data were analyzed using SPSS (ver 23.0) program via composite samples, with the calculations for mean, standard deviation, chi-square test, and logistic return analysis being performed. Results: An analysis of the effect of sleep duration on the number of remaining teeth among people aged >65 years old showed that if the confounding variables were not corrected for, the risk of having less than 9 hours of sleep was 1.40 times higher (95% CI: 1.06-1.86). However, this was not statistically significant in models that corrected for gender, age, and other confounding variables (p>0.05). Conclusions: The association between sleep duration among the elderly with their number of remaining teeth was confirmed. Therefore, measures to improve sleep quality and oral care practices to maintain the remaining teeth in people over 65 years old should be developed.