title: The effects of instructed toothbrushing on the cleanliness of teeth and DMF: an eighteen-month study.
mesh_terms: D000293:Adolescent; D002648:Child; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology / Q000517:prevention & control*; D005260:Female; D006267:Health Education, Dental; D006801:Humans; D008297:Male; D009909:Oral Health; D014099:Toothbrushing