Aging & Longevity

Determinants of oral functions and oral frailty in older community-dwelling individuals: a comprehensive analysis.

TL;DR

Oral function determinants show age-related changes and have the potential to estimate the prevalence of poor oral functions in older community-dwelling individuals, with chewing strokes, natural teeth, and tongue pressure identified as significant predictors of age.

Key Findings

Correlation analysis revealed significantly strong to low correlations between determinants of oral function in older individuals.

  • Correlations ranged from strong (rs = -0.79) to low (rs = -0.11)
  • All reported correlations were statistically significant at p < .001
  • Oral functions assessed included dental status, saliva secretion, orofacial muscle strength, masticatory performance, and swallowing function
  • Cross-sectional study with n = 206 older community-dwelling individuals

Cluster analysis identified three major groups of oral function among older individuals.

  • Cluster analysis was employed to explore the complexities of oral function determinants and their interrelationships
  • Three distinct clusters of oral function were successfully identified
  • The study used correlation analysis, cluster analysis, and multiple regression as analytical methods

Chewing strokes, natural teeth, and tongue pressure were significant predictors of age in older individuals.

  • Multiple linear regression with backward elimination was used to identify predictors
  • All three predictors — chewing strokes, natural teeth, and tongue pressure — were significant at p < .001
  • These findings suggest these oral function measures change meaningfully with age

The prevalence of poor oral functions across specific domains was estimated in the older community-dwelling sample.

  • Prevalence of poor dental status was estimated at 9.7%
  • Prevalence of reduced tongue pressure strength was estimated at 14.6%
  • Prevalence of low saliva secretion rate was estimated at 8.3%
  • These estimates were derived from a cross-sectional sample of n = 206 older individuals

Aging alters oral structures and affects chewing and swallowing function, making oral function an important component of systemic health in older individuals.

  • The study comprehensively evaluated various oral function determinants and their age-related changes
  • Oral functions were objectively assessed through dental status, saliva secretion, orofacial muscle strength, masticatory performance, and swallowing function
  • Understanding age-related changes in oral function is described as crucial for oral health care
  • Findings were characterized as potentially critical in identifying the phenotypic profile of people with poor oral function

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Citation

Jia L, Grigoriadis A, Suzuki A, Strandberg R, Skott P, Sandborgh Englund G, et al.. (2026). Determinants of oral functions and oral frailty in older community-dwelling individuals: a comprehensive analysis.. The journals of gerontology. Series A, Biological sciences and medical sciences. https://doi.org/10.1093/gerona/glag021