title: The effect of oral health care instruction during the 1979 National Dental Health Week on plaque removal by school-children.
mesh_terms: D002648:Child; D002675:Child, Preschool; D003773:Dental Plaque / Q000517:prevention & control*; D005260:Female; D006267:Health Education, Dental; D006801:Humans; D008297:Male; D009909:Oral Health; D009910:Oral Hygiene; D013019:South Africa