Abstract: Objective To investigate the status of primary teeth caries prevalence among 3 to 6-year-old kindergarten children in Haidian district of Beijing, in order to provide epidemiological basis for prevention and control of teeth caries in children.Method Totally 5 586 children aged 3~6 from 16 kindergartens in Haidian district of Beijing were investigated for oral health status from March to April in 2015 and the results were statistically analyzed.Results The caries prevalence of children in this study was 64.43%.The caries prevalence increased with the increasing age of children (χ²=133.549, P<0.001).The caries dmft value was 3.70±4.10.The differences on caries dmft among children at different age groups were statistically significant (F= 61.323, P<0.001).The affected teeth were mainly located in anterior teeth in younger children, while molars were more easily affected in older children.Conclusions The caries prevalence of deciduous teeth in Haidian district of Beijing is relatively high.Targeted caries prevention and intervention strategies should be carried out according to the characteristics of teeth caries in children at different age stages.

Key words: primary tooth, caries prevalence, dmft, preschool children

摘要： 目的 了解北京市海淀区幼儿园3~6岁儿童乳牙患龋状况,为北京市海淀区集体儿童龋病预防与控制提供参考依据。方法 2015年3月-4月对北京市海淀区16所幼儿园的5 586名3~6岁儿童进行口腔健康状况调查,并对结果进行统计学分析。结果 本研究样本3~6岁儿童乳牙平均患龋率64.43%,患龋率随年龄的增长逐年增加(χ²=133.549,P<0.001);样本儿童龋均为3.70±4.10,不同年龄组儿童龋均的差异具有统计学意义(F=61.323,P<0.001);样本儿童患龋的好发牙位随着年龄的增加从上切牙向磨牙转移。结论 北京市海淀区乳牙患龋率较高,针对不同年龄的儿童龋好发部位不同应该采取相应的防治策略。

关键词: 乳牙, 患龋率, 龋均, 学龄前儿童