The changing face of periodontics.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005891:Gingivitis / Q000145:classification; D006801:Humans; D010510:Periodontal Diseases / Q000145:classification / Q000175:diagnosis / Q000628:therapy*; D010518:Periodontitis / Q000145:classification