Fluoridation: slow diffusion of a proved preventive measure.
D000293:Adolescent; D000328:Adult; D002648:Child; D003731:Dental Caries / Q000453:epidemiology / Q000517:prevention & control*; D005457:Fluoridation; D005102:Health Expenditures; D006801:Humans; D007883:Legislation, Medical; D008404:Massachusetts; D014481:United States