title: Secular changes in caries prevalence in two Massachusetts towns.
mesh_terms: D000293:Adolescent; D002648:Child; D002986:Clinical Trials as Topic; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology*; D004812:Epidemiologic Methods; D005260:Female; D005459:Fluorides / Q000008:administration & dosage; D006801:Humans; D008297:Male; D008404:Massachusetts
chemical_list: D005459:Fluorides