This study investigated the relationship between changing oral health status of Japanese elder individuals and reforming of the elder health care system by examined health care statistics.
The Japanese medical insurance system pays consultation fees to physicians for services, and co-payment by patients are basically charged by fixed ratio. The health care system for elderly started from 1970s, the Welfare Law for the Elderly was revised to introducing the medical care expenditure provision system for elderly, medical services made free of charge for over 70-years people. In 1983, the Health and Medical Service Law for the Elderly introduced fixed rate system to over 70-years. In addition, the number of dentists per 100,000 individuals increased 1.8 times and the number of dental clinics increased 1.7 times from 1975 to 1999 in Japan. After introducing the Health and Medical Service Law for the Aged, it observes that accessibility of dental service for elderly improved in co-payment charge and dental service supply.
The Report on the Survey of Dental Diseases showed mean number of the present teeth at 65-69 years increased 1.8 times in 24 years from 1975 to 1999. Every over 70-years group showed similar inclination at number of the present teeth. Changing number of missing teeth compared 1975 to 1999. The inference age examined number of missing teeth at 1999 adjusted extension of the average life expectancy from 1975 to 1999. The decreasing of missing teeth rate was higher than the extension rate of life expectancy. Next, number of missing teeth was compared by quasi-cohort which made from the age at the Survey of Dental Diseases. The number of missing teeth of the group born between 1914 and 1919, the first generation applied the Health and Medical Service Law for the Aged, keeps more present teeth than earlier born groups. Later born groups shows similar trends obviously.
For Japanese elderly, increasing dental service supply and reduction of co-payment charge improved accessibility to dental service. Compared with improvement of health status brought on extension of life expectancy, it makes a contribution to keep the oral health status of the elderly.
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