Abstract: Objective To understand the epidemic status of dental caries among 8-year-old school-aged children in Pingdingshan city. Method A total of 1 762 children aged 8 (grade two students) in five counties and three districts of Pingdingshan were interviewed by stratified cluster sampling method. Results The incidence of caries among 8-year-old school-aged children in Pingdingshan was 84.68%,with an average DMFT of 4.79.There was significant difference of caries prevalence between rural and urban areas (P＜0.05).The rate of six or more dental caries on rural and urban areas was 35.61% and 44.20% respectively,the difference was statistically significant (P＜0.05).The rate of dental caries on deciduous teeth and permanent teeth was 83.65% and 25.77% respectively.There was a direct correlation between breast teeth and constant molar (r=0.236,OR=11.24). Conclusion The caries prevalence rate of permanent teeth is relatively high.Oral health education of children and control dental caries should be strengthened to reduce the prevalence of dental caries among children.

Key words: 8-year-old school-aged children, caries rate, epidemiologic situation

摘要： 目的 了解平顶山市8岁学龄儿童龋病流行状况。方法 采用分层、整群抽样的方法对平顶山市五县、三区的1 762名8岁学龄儿童(小学二年级学生)进行口腔健康检查。结果 平顶山市8岁学龄儿童患龋率84.68%,龋均4.79,农村患龋率高于城市,而乳恒牙龋齿充填率低于城市,差异有统计学意义(P＜0.05);城乡儿童患6颗及以上龋齿的概率分别为35.61%和44.20%,差异有统计学意义(P＜0.05);8岁学龄儿童乳恒牙患龋率分别为83.65%、25.77%,乳磨牙患龋与恒磨牙患龋有相关性(r=0.236,OR=11.24)。结论 平顶山市8岁学龄儿童患龋率较高,且农村高于城市,应加强儿童口腔健康教育和龋病预防控制工作,降低城乡儿童的患龋率。

关键词: 8岁学龄儿童, 患龋率, 流行状况