title: [A longitudinal study of tooth exfoliation and dental caries in adults in Gucheng village].
abstract: In order to observe the Age-Related changes in dental health conditions, we selected Gucheng village, a rural area of Beijing as a surveillance place for our longitudinal study. 575 persons in different age groups were examined in 1984 and 507 persons were reexamined in 1989. The rate of reexamination was 86.4%. During the 5-year period, 0.3-1.8 teeth were missing in 20-40 years old groups and 2.8-5.5 teeth were missing in 50-70 years old groups. Beyond 60 years old groups more than 43% original remaining teeth were missing or present as residual roots. More than 10% original healthy teeth were decayed and more than 90% original caries teeth became aggravated in elderly group within 5 years. This study indicates that the incidences of tooth mortality and dental caries are much higher in elders than in young adults.
authors.affiliation: Department of Stomatology, Beijing Hospital.
authors.forename: W M
authors.initials: WM
authors.lastname: Luan
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D002681:China / Q000453:epidemiology; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology*; D003753:Dental Health Surveys; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012424:Rural Population; D014080:Tooth Exfoliation / Q000453:epidemiology*