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Number of Teeth and Dementia-free Life Expectancy: A 10-Year Follow-Up Study From the Japan Gerontological Evaluation Study.
Kiuchi, Sakura; Matsuyama, Yusuke; Takeuchi, Kenji; Kusama, Taro; Cooray, Upul; Osaka, Ken; Aida, Jun.
Afiliación
  • Kiuchi S; Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Japan; Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan; Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tok
  • Matsuyama Y; Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
  • Takeuchi K; Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan; Division of Statistics and Data Science, Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Miyagi, Japan.
  • Kusama T; Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan; Division of Statistics and Data Science, Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Miyagi, Japan.
  • Cooray U; Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan; National Dental Research Institute Singapore, National Dental Centre Singapore, Singapore, Singapore.
  • Osaka K; Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan.
  • Aida J; Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
J Am Med Dir Assoc ; : 105258, 2024 Sep 11.
Article en En | MEDLINE | ID: mdl-39276797
ABSTRACT

OBJECTIVES:

Previous studies have reported that tooth loss is associated with an increased risk of dementia; however, few have explored the association between number of teeth and dementia-free and total life expectancies. We investigated whether having more teeth is associated with longer dementia-free and total life expectancies.

DESIGN:

A 10-year follow-up prospective cohort study from 2010 to 2020. SETTING AND

PARTICIPANTS:

Functionally independent older adults aged ≥65 years living in 9 municipalities in Japan.

METHODS:

The exposure was the number of teeth (≥20, 10-19, 1-9, and 0). Dementia onset and mortality within the 10-year follow-up were used as the outcome. Dementia-free and total life expectancies according to the number of teeth were derived from multistate modeling estimates.

RESULTS:

A total of 44,083 participants were included (men 46.8%). The mean age was 73.7 years (standard deviation [SD] = 6.0). During follow-up, 17.3% and 21.4% of the participants experienced the onset of dementia and death, respectively. Having fewer teeth was associated with dementia (hazard ratio [HR], 1.14; 95% confidence interval [CI], 1.07-1.22, 10-19 teeth; HR, 1.15; 95% CI, 1.08-1.22, 1-9 teeth; HR, 1.13; 95% CI, 1.05-1.21, 0 teeth) and death (HR, 1.13; 95% CI, 1.05-1.22, 10-19 teeth; HR, 1.27; 95% CI, 1.19-1.37, 1-9 teeth; HR, 1.47; 95% CI, 1.36-1.59, 0 teeth) compared with having ≥20 teeth. Dementia-free life expectancies at the age of 65 years were 16.43 years and 18.88 years with ≥20 teeth, and 14.40 years and 17.12 years with 0 teeth for men and women, respectively. The total life expectancies at the age of 65 were 17.84 years and 22.03 years with ≥20 teeth, and 15.42 years and 19.79 years with 0 teeth for men and women, respectively. CONCLUSIONS AND IMPLICATIONS Having more teeth was associated with longer dementia-free and total life expectancies.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Med Dir Assoc Asunto de la revista: HISTORIA DA MEDICINA / MEDICINA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Med Dir Assoc Asunto de la revista: HISTORIA DA MEDICINA / MEDICINA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos