Dental cleanliness and chronic periodontal disease. Studies on populations in Britain.
D000293:Adolescent; D000328:Adult; D003728:Dental Calculus / Q000150:complications; D003741:Dental Deposits / Q000150:complications; D003773:Dental Plaque / Q000150:complications; D006801:Humans; D008875:Middle Aged; D009909:Oral Health; D010510:Periodontal Diseases / Q000209:etiology*; D014099:Toothbrushing; D006113:United Kingdom