title: Treatment of chronic periodontitis. 45% failure rate after 5 years.
mesh_terms: D002908:Chronic Disease; D003773:Dental Plaque / Q000517:prevention & control; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010512:Periodontal Index; D010518:Periodontitis / Q000628:therapy*