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Secular trends of dental status in five 70-year-old cohorts between 1971 and 2001.

Journal article
Authors Tor Österberg
Cecilia Johanson
Valter Sundh
Bertil Steen
Dowen Birkhed
Published in Community dentistry and oral epidemiology
Volume 34
Issue 6
Pages 446-54
ISSN 0301-5661
Publication year 2006
Published at Institute of Odontology
Institute of Medicine, School of Public Health and Community Medicine
Pages 446-54
Language en
Keywords Aged, Cohort Studies, Crowns, statistics & numerical data, Dental Care, statistics & numerical data, utilization, Dental Restoration, Permanent, statistics & numerical data, Dentition, Denture, Complete, statistics & numerical data, Denture, Partial, Removable, statistics & numerical data, Educational Status, Female, Health Transition, Humans, Jaw, Edentulous, epidemiology, Jaw, Edentulous, Partially, epidemiology, Male, Marital Status, statistics & numerical data, Oral Health, Root Canal Therapy, statistics & numerical data, Sex Factors, Smoking, epidemiology, Sweden, epidemiology
Subject categories Dentistry, Gerodontology, Geriatrics


OBJECTIVE: The aims of this study, which are part of the gerontological and geriatric population studies in Göteborg, Sweden (H70), were to describe cohort differences and trends in dental status and utilization of dental care in 70-year-olds. The study is based on five cohorts examined in 1971/72, 1976/77, 1981/82, 1992/93 and 2000/01 (called cohort I, II, III, V and VI, respectively). The total number of participants was 2290 and varied between 386 and 583 in the different cohorts. The proportion of dentate 70-year-olds changed gradually from 49% in the first to 93% in the last cohort. The mean number of teeth in the dentate 70-year-olds was 14 in cohort I and 21 in cohort VI. The proportion of subjects with 20 or more teeth changed from 13% in cohort I, to 20% in cohort III, and to 65% in cohort VI. In cohort I, 76% of the 70-year-olds had some kind of removable denture; 37% in cohort III, but only 17% in cohort VI. About 20% of all 70-year-olds in cohort I reported regular yearly visits to a dentist. The corresponding figures in cohort III and cohort VI were 50% and 80%, respectively. Even though positive cohort trends were observed in all studied subgroups, factors such as low education, smoking, being un-married, having high waist circumference and being physically inactive were negatively associated with dental status at the end of the study period as well as at the beginning.

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