15 years of CPITN--a Japanese perspective.

In Japan CPITN has been widely applied in dentistry over the past 10 years. CPITN has been introduced for screening purposes into basic dental epidemiology, dental public health and dental clinical practice. From many surveys the periodontal needs of young, mature and elderly populations have been documented. For the purpose of promoting improved periodontal awareness and care, CPITN has been implemented in dental public health and community based activities in schools, in industry, and in health centres. This has involved periodontal screenings and appropriate health guidance. The Japanese Health Laws are being modified to include a need for periodic oral examinations which will incorporate a CPITN screening. National goals for periodontal health at different age levels, based on CPITN, have been proposed and included in the national '8020' goal for oral health.