title: Adaptation of Knutson's "working estimate" in surveys of gingivitis and periodontitis.
mesh_terms: D000293:Adolescent; D000328:Adult; D001315:Australia; D002648:Child; D002675:Child, Preschool; D004245:DMF Index; D005260:Female; D005891:Gingivitis / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D010510:Periodontal Diseases / Q000175:diagnosis*; D010512:Periodontal Index; D010518:Periodontitis / Q000453:epidemiology*