日本厚生省决定从85年起在全国八座城市给五岁儿童的牙齿涂敷氟化钠,以期将孩童龋齿数控制到目前的一半。计划每年以四万人为对象,先执行三年,将来再向全国铺开。涂敷工作将由学校保健部门实施。世界保健机构(WHO)曾于1981年公布指标,十二岁儿童龋齿应在3颗以下。据厚生省调查,日本的实际情况是十二岁男女儿童 Japan’s Ministry of Health decided to apply sodium fluoride to teeth of five-year-olds in eight cities across the country from 1985 onwards, with a view to halving the number of children with dental decay. The plan is to target 40,000 people each year, first for three years and then in the future. Coating work will be carried out by the school health department. The World Health Organization (WHO) published the index in 1981, and the number of dental caries in 12-year-olds should be below 3. According to a survey conducted by the Ministry of Health and Welfare, the actual situation in Japan is that of boys and girls of twelve years old