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Oral Factors Associated with Swallowing Function in Independent Elders
Oral Health & Preventive Dentistry
|September 8, 2020
Summary
Few teeth, dry mouth, and poor oral hygiene significantly increase swallowing difficulty in elders. Maintaining good oral health is crucial for preserving swallowing function in older adults.
Area of Science:
- Gerontology
- Oral Health
- Swallowing Disorders
Background:
- Swallowing function declines with age, increasing risks for malnutrition and aspiration pneumonia.
- Oral health is increasingly recognized as a critical factor influencing overall health in older adults.
Purpose of the Study:
- To investigate the association between specific oral health factors and swallowing function in community-dwelling elders.
- To identify key oral conditions that predict swallowing difficulties in the elderly population.
Main Methods:
- Analysis of oral and medical health check-up data from 4,676 participants aged 75 and 80.
- Swallowing function assessed using the repetitive saliva swallowing test (RSST).
- Multivariate logistic regression used to determine relationships between oral factors and swallowing difficulty.
Main Results:
- Reduced number of teeth (0-9 or 10-19 without dentures) significantly increased odds of swallowing difficulty.
- Moderate to severe dry mouth substantially elevated the risk of swallowing impairment (OR 8.01).
- Abundant dental plaque was associated with higher odds of swallowing difficulty in dentate individuals (OR 2.58).
Conclusions:
- Oral health status, including tooth count, hydration (dry mouth), and hygiene (plaque), is strongly linked to swallowing function in older adults.
- Interventions targeting oral health may improve or maintain swallowing ability in the elderly.
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