title: [Periodontal status of 15-18-year-old students in Kansai region].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D005260:Female; D005891:Gingivitis / Q000453:epidemiology*; D006801:Humans; D008297:Male; D010514:Periodontal Pocket / Q000453:epidemiology*; D010518:Periodontitis / Q000453:epidemiology*; D012737:Sex Factors