Oral health behaviors and bone mineral density in South Korea: the 2008-2010 Korean National Health and Nutrition Examination Survey

Associations between oral health status and risk of fractures in elder adults

Oral health condition, bone mineral density, skeletal muscle mass, fall, fracture, and frailty seem to be strongly interconnected. This study aimed to investigate associations between probability of osteoporotic fractures and oral health in the elderly. In total, 2322 Korean subjects from the 2008-2009 Korea National Health and Nutritional Examination Survey aged over 65 years were included. The 10-year probabilities of major and hip fractures were calculated using the Fracture Risk Assessment (FRAX) tool. Data on anthropometry, skeletal bone mineral density, sociodemographic characteristics, physical activity, individual history of fractures and falls, parental history of osteoporosis, number of teeth, metabolic syndrome, the Decayed, Missing, and Filled permanent Teeth index, and Community Periodontal Index (CPI), were collected. Participants were classified into three groups based on FRAX score for major osteoporotic fractures. A multivariate linear regression analysis was conducted to analyze associations between FRAX scores and oral health-related factors, adjusting for confounding factors. BMI, presence of metabolic syndrome, number of teeth, dental patterns, and CPI score showed significant differences among three groups in males and females. Results from multivariate linear regression analysis demonstrated significant relationships between total tooth number and probabilities of fracture in male and female elderly. The interdisciplinary approach for handling osteoporosis and sarcopenia including dentists, physicians is necessary to facilitate a better quality of life in the elderly.

Relationship between skeletal bone mineral density and subjective masticatory difficulty

Background

Masticatory ability is an essential factor for sustaining quality of life and social and systemic well-being, particularly in elderly. This study aimed to reveal the association between subjective masticatory difficulty and skeletal bone mineral density (BMD).

Methods

Data from the Korean National Health and Nutrition Examination Survey, which was conducted from 2008 to 2011 were analyzed. This study included 13,092 Koreans (5656 males, 7436 females) over 50 years of age. Masticatory difficulty was evaluated based on a self-reported questionnaire. Areal BMD of the total hip, femoral neck, and lumbar spine as well as lean body mass were determined using dual-energy X-ray absorptiometry. Data about the sociodemographic characteristics, physical activity, number of teeth present, sum of decayed, missing, and filled permanent teeth (DMFT) index and Community Periodontal Index (CPI) were collected. Multivariate logistic regression analysis was conducted to analyze associations between subjective masticatory difficulty and BMD, adjusting for the confounding covariates.

Results

Significant differences were observed in the areal BMD of the total hip, femoral neck, and lumbar spine as well as lean body mass accordance with the presence of subjective masticatory difficulty in both males and females. The number of teeth, DMFT, and CPI score did not show significant differences based on the presence of self-reported satisfaction of chewing performance in both males and females. Results from multivariate logistic regression demonstrated that the subjective masticatory difficulty showed significant interactions with skeletal BMD and the associations between masticatory satisfaction and BMD of the total hip and femoral neck were more prominent in females compared to those in males.

Conclusions

The skeletal BMD, particularly areal BMD of the femoral neck was significantly associated with subjective masticatory difficulty in elderly, especially in elder females.

Oral health of high-cost patients and evaluation of oral health measures as predictors for high-cost patients in South Korea: a population-based cohort study

OBJECTIVE

To examine the oral health conditions and oral health behaviour of high-cost patients and evaluate oral health measures as predictors of future high-cost patients.

DESIGN

A retrospective, population-based cohort study using administrative healthcare records.

SETTING

The National Health Insurance Service (NHIS) medical check-up database (a.k.a. NHIS-national health screening cohort database) in South Korea.

PARTICIPANTS

131 549 individuals who received biennial health check-ups including dental check-ups in 2011 or 2012, aged 49-88.

PRIMARY OUTCOME MEASURES

Current and subsequent year high-cost patient status.

RESULTS

High-cost patients, on average, incur higher dental costs, suffer more from periodontal disease, brush their teeth less and use secondary oral hygiene products less. Some of the self-reported oral health behaviours and oral symptom variables show statistically significant associations with subsequent year high-cost patient indicators, even after adjusting for demographic, socioeconomic, medical conditions, and prior healthcare cost and utilisation.

CONCLUSIONS

We demonstrate that oral health measures are associated with an increased risk of becoming a high-cost patient.

Oral Health Status and Behavior among Cancer Survivors in Korea Using Nationwide Survey

Cancer survivors remain at life-long risk of developing oral complications. This study investigated the oral health status and behavior among cancer survivors in comparison to subjects without a history of cancer using a nationwide survey. Cancer survivors and control subjects were selected from the sixth Korean National Health and Nutrition Examination Survey (2013-2015). Survivors reported chewing (34.8%) and speaking difficulties (15.3%) resulting from oral health problems. More than 36% of survivors had periodontal disease and 15.9% needed dentures. In multiple logistic regression analysis, age, household income, education level, smoking status, cancer site, and current cancer status were associated with oral health status. Approximately 43.3% of cancer survivors brushed their teeth more than three times a day. In addition, 44.9% of survivors used secondary oral products, and 30.8% had been screened for oral health problems over the past year. Age, household income and education level were associated with oral health behavior. The oral health status and behavior excepting periodontal disease and the use of secondary oral products were not significantly different between cancer survivors and controls. Although oral health status of cancer survivors was not worse than that of controls, more than half of the survivors maintained unhealthy oral practices.