[A decrease of caries prevalence in 3-year-old children from 1975 to 1979 surveyed at a health center in Fukuoka].
D002654:Child Care; D002675:Child, Preschool; D003731:Dental Caries / Q000453:epidemiology*; D006267:Health Education, Dental; D006801:Humans; D007564:Japan; D008137:Longitudinal Studies