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Association between Present Teeth and Muscle Strength in Older People in Korea
Ji-Eun Kim1, Na-Yeong Kim1, Choong-Ho Choi1,2
1Department of Preventive and Public Health Dentistry, Chonnam National University School of Dentistry, Gwangju 61186, Korea.
Journal of Personalized Medicine
|July 27, 2022
Summary
Maintaining adequate teeth is crucial for preserving muscle strength in older adults. This study in Korea found a significant association between having at least 20 teeth and better muscle strength, highlighting the importance of oral health.
Area of Science:
- Gerontology
- Oral Health
- Musculoskeletal Health
Background:
- Global population aging increases focus on age-related muscle strength decline.
- Muscle strength loss is a significant concern for older adults' health and independence.
- Oral health, specifically the presence of natural teeth, is increasingly recognized as a factor in overall health.
Purpose of the Study:
- To investigate the association between the number of natural teeth and muscle strength in older Korean adults.
- To determine if maintaining at least 20 natural teeth is linked to reduced risk of low muscle strength.
- To explore potential sex-based differences in this association.
Main Methods:
- Analysis of data from 5136 Korean adults aged 65-79 years (2014-2019 KNHANES).
- Definition of 'present teeth' based on a threshold of 20 teeth for comfortable mastication.
- Statistical assessment using multiple logistic regression, including subgroup analyses by sex.
Main Results:
- The prevalence of low muscle strength was 17.87% in the study population.
- A significant association was confirmed between low muscle strength and fewer than 20 present teeth, even after adjusting for covariates (OR = 1.35).
- This association remained significant in both men (OR = 1.41) and women (OR = 1.31) in subgroup analyses.
Conclusions:
- A clear association exists between having fewer than 20 natural teeth and low muscle strength in older Korean adults.
- These findings underscore the importance of oral hygiene and dental health management for preventing muscle decline in the elderly.
- Promoting adequate oral health may be a viable strategy to support muscle strength maintenance in aging populations.
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