Periodontal diseases, a grave socio-economic problem in Black Africa.
D000293:Adolescent; D000328:Adult; D000349:Africa; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D010510:Periodontal Diseases / Q000191:economics / Q000453:epidemiology / Q000517:prevention & control; D011636:Public Health Dentistry / Q000379:methods