Dental caries and gingivitis in schoolchildren from the municipality of Porto Alegre, Brazil in 1975 and 1996.
D001938:Brazil / Q000453:epidemiology; D002648:Child; D015331:Cohort Studies; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology*; D005457:Fluoridation; D005459:Fluorides / Q000008:administration & dosage; D005891:Gingivitis / Q000453:epidemiology*; D006801:Humans; D015588:Observer Variation; D009910:Oral Hygiene; D010512:Periodontal Index; D015995:Prevalence; D014100:Toothpastes / Q000737:chemistry; D014504:Urban Health