The Dental Care and Treatment of Periodontal Disease in Mental Deficient Adults I. The Status of Oral Hygiene and Periodontal Disease

Our study was designed to establish a rational system for the dental care management and treatment of periodontal disease in mental deficient adults. As the first part of the study, the status of oral hygiene and periodontal disease was evaluated in this report. Subjects were 45 persons institutionalized for mental deficiency in Hokkaido, aged 17 to 52, IQ from 72 to under 14, The Plaque Accumlation Rate (PI.R.), Gingival Index (G.I.) and Pathological Pocket Rate (Po.R.) were evaluated on every permanent tooth except third molars, C4 and teeth with artifical crowns. P1. R, was evaluated by the following modified Kawasaki's method. The tooth surface was divided into 10 sections, and plaque accumulatd sections were assessed. P1.R.= Number of plaque accumulated section Number of the examined section •~100(%)