title: Enamel opacities in primary and high school pupils.
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D005457:Fluoridation; D009050:Fluorosis, Dental / Q000453:epidemiology* / Q000473:pathology; D006801:Humans; D008297:Male; D012737:Sex Factors; D013019:South Africa