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An association between dentate status and hearing acuity.

C L Schell1, R L Diehl, A E Holmes

  • 1College of Dentistry, University of Florida, Gainesville 32610-0407, USA.

Special Care in Dentistry : Official Publication of the American Association of Hospital Dentists, the Academy of Dentistry for the Handicapped, and the American Society for Geriatric Dentistry
|April 15, 2000
PubMed
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Elderly individuals with teeth had better hearing than those without teeth. This study suggests a link between having teeth and improved hearing acuity in older adults.

Area of Science:

  • Gerontology
  • Audiology
  • Dental Medicine

Background:

  • Case studies suggest hearing improvement after dental treatment, but objective data is limited.
  • The relationship between oral health (dentate status) and hearing acuity requires further investigation.

Purpose of the Study:

  • To investigate the association between the number of natural teeth and hearing acuity in elderly individuals.
  • To compare hearing thresholds between dentate and edentulous elderly subjects.

Main Methods:

  • A retrospective study analyzed hearing thresholds in elderly participants of a health promotion trial.
  • Hearing outcome variables were derived from air-conduction pure tone average (PTA) thresholds at multiple frequencies (500-6000 Hz).
  • Subjects were categorized into two groups: those with 25+ teeth (dentate) and those without teeth (edentulous).

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Main Results:

  • Edentulous subjects exhibited significantly worse hearing thresholds (p < 0.05) across all measured frequencies compared to dentate subjects.
  • The mean PTA threshold differences ranged from 4.9 dB to 8.6 dB between the groups.
  • Adjusted analyses, controlling for known hearing-influencing factors, also revealed poorer hearing in edentulous individuals.

Conclusions:

  • Pilot findings indicate a significant association between dentate status and hearing acuity in the elderly.
  • Edentulism may be linked to diminished hearing capabilities, warranting further research into the underlying mechanisms.
  • This study highlights a potential connection between oral health and auditory function in older populations.