本文调查了南通市郊农村小学生3625人的患龋情况:患龋率为51.09%,受检者龋均1.64,患龋者龋均3.22;男女性患龋率无差异。龋牙分布与各地资料一致,完全符合龋病特点。混合牙列龋度情况与乳牙龋度近似,恒牙龋度情况对保护患龋儿童成年后咀嚼器官完整性有重要意义。口腔卫生良好者患龋率明显低于口腔卫生不良者。患龋者受治率为0.11%。 In this paper, 3625 rural children in Nantong suburbs suffering from dental caries: prevalence of caries was 51.09%, subjects were caries were 1.64, caries were caries were 3.22; male and female caries rate was no difference. Caries tooth distribution consistent with the data around, in full compliance with the characteristics of dental caries. Mixed dentition caries degree and deciduous caries degree similar, permanent teeth caries degree of protection of caries children with adult masticatory organs integrity is important. Oral caries prevalence rate was significantly lower than those with poor oral hygiene. The prevalence of caries was 0.11%.