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广州市实行自来水加氟防龋已18年。我们为了解自来水加氟停止两年半后龋病及氟牙症的变化情况。于1986年3月到5月,在广州市区及芳村区对中小学生龋病、氟牙症的流行情况进行了调查。
Guangzhou municipal water fluoride anti-caries for 18 years. In order to know about the changes of dental caries and dental fluorosis in two and a half years after the fluoride water supply in tap water was stopped, From March to May 1986, the prevalence of dental caries and dental fluorosis in primary and secondary school students in Guangzhou and Fangcun districts was investigated.