笔者于 1999年 11～ 12月对本区托幼园所 3～ 6岁儿童进行乳牙龋齿调查 ,现将结果报告如下。1　临床资料受检园所 2 6个 ,共有幼儿 2 5 5 3人。受检人数为 2 2 0 3人 ,发现患有龋齿病者达 1478人 ,患病率 6 7.1%。按年龄组分 ,3岁～受检 40 2人 ,患龋齿 2 48人 ,占 6 1.7% ;4岁 The author conducted a survey of deciduous teeth on children aged 3 to 6 years old in our district from November to December 1999, and the results are reported as follows. There are 26 clinics in clinical data, with a total of 2553 children. The number of subjects was 2,203, and found that there were 1478 people with dental caries, the prevalence was 6 7.1%. According to the age group, aged 3 ~ 40 were examined, 2 48 with dental caries, accounting for 6 1.7%; 4 years old