广州市从1965年开始全面实行自来水加氟预防龋齿,1971年芳村地区3～14岁儿童龋齿减少50%左右,1972年东山地区龋齿减少30%左右。我们1966年对越秀区一间学校14～17岁学生的龋齿(包括龋、补、失)进行了初查。1973年(加氟7年后,以同一个检查者,在同一间学校,用同样的检查方法和诊断标准进行了复查。结果见附表。14、15、16、17岁四个年龄组,1973年与1966年相比,无龋率增加39.1～ Guangzhou City, from 1965 to implement the full fluoride water to prevent dental caries, Fangcun area in 1971 to reduce the dental caries of children aged 3 to 14 about 50%, Dongshan area in 1972 to reduce dental caries by about 30%. In 1966 we carried out a preliminary examination of dental caries (including caries, fillings and loss) of students aged 14 to 17 in a school in Yuexiu District. In 1973 (after 7 years of fluoridation, the same examiner in the same school, with the same test methods and diagnostic criteria were reviewed. The results are attached .14,15,16,17 years of age four age groups, Compared with 1966 in 1973, caries-free rate increased 39.1 ~