[The incidence of periodontal and oral mucosal diseases among students 7-18 years old].
D000293:Adolescent; D002648:Child; D006801:Humans; D009059:Mouth Diseases / Q000453:epidemiology*; D010510:Periodontal Diseases / Q000453:epidemiology*; D012571:School Dentistry
Prouchvaniia vrkhu chestotata na zaboliavaniiata na parodonta i ustnata ligavitsa sred uchenitsi na 7-18-godishna vzrast.