title: The prevalence of dental caries among urban, semi-urban and rural school children in the Sudan.
mesh_terms: D000293:Adolescent; D002648:Child; D004245:DMF Index; D003731:Dental Caries / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D012423:Rural Health; D013397:Sudan; D014504:Urban Health