title: Patterns of oral hygiene and dental caries in urban and rural South African preschool children.
mesh_terms: D002675:Child, Preschool; D003731:Dental Caries / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009910:Oral Hygiene; D009911:Oral Hygiene Index; D012423:Rural Health; D013019:South Africa; D014504:Urban Health