Relationships of educational levels to periodontal disease and oral hygiene, with variables of age and geographic regions.
D000293:Adolescent; D000328:Adult; D000375:Aging; D003728:Dental Calculus / Q000453:epidemiology*; D004467:Economics; D004493:Education; D006801:Humans; D008297:Male; D009909:Oral Health; D010510:Periodontal Diseases / Q000453:epidemiology*; D010512:Periodontal Index; D012924:Social Conditions; D014481:United States