title: Epidemiology of periodontal disease.
authors.forename: D E
authors.initials: DE
authors.lastname: Barmes
mesh_terms: D003753:Dental Health Surveys; D006801:Humans; D007390:International Agencies; D009911:Oral Hygiene Index; D010510:Periodontal Diseases / Q000453:epidemiology*; D010512:Periodontal Index; D014944:World Health Organization