[4-year periodontal health status of 15-year-old children].
D000293:Adolescent; D006267:Health Education, Dental; D006801:Humans; D009910:Oral Hygiene; D010510:Periodontal Diseases / Q000453:epidemiology*; D014421:Turkey
4 yil ara ile 15 yaş grubunda yapilan periodontal değerlendirmelerin karşilaştirilmasi.