title: [Use of the WHO periodontal index in studying the periodontal morbidity of persons 15 to 25 years old].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D006301:Health Services Needs and Demand; D006801:Humans; D009031:Moscow; D009911:Oral Hygiene Index; D010510:Periodontal Diseases / Q000453:epidemiology*; D010512:Periodontal Index; D014505:Urban Population; D014944:World Health Organization
vernacular_title: Ispol'zovanie parodontal'nogo indeksa VOZ pri izuchenii zabolevaemosti parodonta u lits v vozraste 15--25 let.