[Prevalence of periodontal disease in junior high schoolchildren in Hiroshima region. Part III. Findings of third examination].
D000293:Adolescent; D002648:Child; D006801:Humans; D007564:Japan; D008137:Longitudinal Studies; D010510:Periodontal Diseases / Q000453:epidemiology*; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000473:pathology