Tobacco smoking: a major risk factor for loss of teeth in three 70‐year‐old cohorts *

Abstract
Oral health was examined in a random sample of 1377 people in three 70-yr-old cohorts studied within 5-yr intervals. During the studied period 1971-1983 the prevalence of toothlessness decreased from 52 to 34%. Toothlessness in men was more common in smokers, 48%, and ex-smokers, 32%, than in non-smokers, 20% Eichner''s index was used as a measurement of dental invalidity. This index showed a worse dental state among smokers and ex-smokers compared to non-smokers. Multivariate analyses indicated that tabacco smoking was a major independent risk factor for tooth loss in elderly men.