Oral Status and Its Association With Oral Health-Related Quality of Life in Community-Dwelling Older Adults

Background

Oral health is a fundamental component of overall health and well-being, yet it is frequently overlooked in geriatric care. Among older adults, poor oral health can lead to nutritional deficiencies (due to impaired chewing), social withdrawal (due to embarrassment about dental appearance or bad breath), and increased risk of systemic conditions including cardiovascular disease, pneumonia, and diabetes complications. The concept of oral health-related quality of life (OHRQoL) captures the subjective impact of oral conditions on daily functioning, comfort, and self-perception.

This study examined the oral health status of community-dwelling older adults and its association with self-reported OHRQoL. Understanding these associations is critical for developing targeted interventions that address the specific oral health needs of ageing populations in the Southeast Asian context, where access to dental care may be limited, particularly in rural areas.

The OHIP-14 Instrument

The study employed the Oral Health Impact Profile-14 (OHIP-14), a widely validated instrument that assesses seven dimensions of oral health impact: functional limitation, physical pain, psychological discomfort, physical disability, psychological disability, social disability, and handicap. Higher OHIP-14 scores indicate greater negative impact of oral conditions on quality of life. The instrument has been used extensively in population studies across Asia, including studies in Myanmar, Japan, and China, allowing for cross-cultural comparisons.

Key Associations

The study found significant associations between clinical oral health indicators and impaired OHRQoL. Tooth loss emerged as a primary factor: older adults with fewer remaining natural teeth reported substantially worse quality of life across multiple OHIP-14 domains, particularly psychological discomfort and functional limitation. Active dental caries and indicators of periodontal disease (such as clinical attachment loss and bleeding on probing) were also associated with poorer OHRQoL outcomes.

These findings are consistent with international evidence. A large European study using SHARE data (n=59,048) demonstrated that higher quality of life was associated with the presence of all natural teeth, and among those with missing teeth, with having teeth replaced through prosthetic devices. Research from Myanmar similarly found that 57.2% of community-dwelling older adults had impaired OHRQoL, with tooth loss and dental caries as primary contributors.

Implications for Public Health

The study’s findings have several important implications. First, they support the integration of routine oral health screening into geriatric primary care visits. Many older adults visit medical practitioners regularly for chronic disease management but may not access dental care independently. Second, community-based oral health promotion programmes targeting older adults should emphasise not only oral hygiene practices but also the importance of seeking timely dental treatment for decayed or painful teeth.

In the Malaysian context, where the proportion of adults aged 60 and above is projected to increase substantially in the coming decades, these findings underscore the need for policy attention to geriatric oral health. Public dental services in Malaysia have historically focused on school children and maternal populations; expanding coverage to include preventive and restorative care for older adults represents an important policy frontier.

Limitations

The cross-sectional study design precludes causal conclusions about the direction of the relationship between oral health and quality of life. Self-reported quality of life measures may be influenced by adaptation to chronic oral conditions, potentially underestimating the true impact. The study’s community-based sample may not represent institutionalised older adults, who typically have worse oral health. Future longitudinal studies tracking changes in both oral health and OHRQoL over time would strengthen the evidence base.

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