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Associations Between Oral Health and Risk of Dementia in a 37-Year Follow-Up Study: The Prospective Population Study of Women in Gothenburg

Journal article
Authors R. Stewart
Ulrika Stenman
Magnus Hakeberg
Catharina Hägglin
Deborah Gustafson
Ingmar Skoog
Published in Journal of the American Geriatrics Society
Volume 63
Issue 1
Pages 100-105
ISSN 0002-8614
Publication year 2015
Published at Institute of Odontology
Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
Pages 100-105
Language en
Keywords dementia, tooth loss, oral health, periodontal disease, cohort study, ALZHEIMERS-DISEASE, COGNITIVE IMPAIRMENT, GENERAL DESIGN, DENTAL-HEALTH, EDENTULISM, NUTRITION, MORTALITY, DECLINE, PURPOSE, PEOPLE, Geriatrics & Gerontology, Gerontology
Subject categories Geriatrics


ObjectivesTo investigate the association between incident dementia and previous number of teeth measured over a long interval. ParticipantsWomen with (n=158) and without (n=539) dementia in 2000 to 2005. MeasurementsTooth counts in 1968-69, 1980-81, and 1992-93. Covariates included age, education, stroke, myocardial infarction, diabetes mellitus, smoking status, blood pressure, body mass index, and cholesterol level. ResultsAfter adjustment for age, odds ratios (ORs) for dementia in 2000-05, comparing first with fourth tooth count quartiles, were 1.81 (95% confidence interval (CI)=1.03-3.19) for tooth counts measured in 1968, 2.25 (95% CI=1.18-4.32) for those in 1980, and 1.99 (0.92-4.30) for those in 1992. After further adjustment for education, ORs were 1.40 (95% CI=1.03-3.19) for 1968, 1.96 (95% CI=0.98-3.95) for 1980, and 1.59 (95% CI=0.71-3.53) for 1992, and after additional adjustment for vascular risk factors, ORs were 1.38 (95% CI=0.74-2.58) for 1968, 2.09 (95% CI=1.01-4.32) for 1980, and 1.61 (95% CI=0.70-3.68) for 1992. ConclusionIn most of the analyses, lower tooth count was not associated with dementia, although a significant association was found for one of the three examinations. Further research may benefit from more-direct measures of dental and periodontal disease.

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