title: [Preventive and epidemic research in periodontal disease. 1. Study of preventive and epidemic research in periodontal disease in psychopathic patients].
mesh_terms: D003730:Dental Care for Persons with Disabilities; D003773:Dental Plaque / Q000517:prevention & control; D006801:Humans; D001523:Mental Disorders; D010510:Periodontal Diseases / Q000453:epidemiology* / Q000517:prevention & control; D012559:Schizophrenia