作者于1990～1991年对阜阳市3～7岁5477名集居儿童龋齿发病情况调查如下: 资料和方法 一、调查时间和对象:1990年和1991年我们对本市幼儿园5477名3～7周岁集居儿童进行健康检查,同时重点抽样调查龋齿发病情况。 二、调查的方法:按全国统一九市儿童体检的标准,同时对口腔牙齿作了详细的检查。 三、结果:1.1990～1991年度5477名3～7周岁集居儿童龋齿患病率1990年为 The authors investigated the incidence of dental caries among 5477 children aged 3 to 7 years old in Fuyang from 1990 to 1991 as follows: Materials and Methods 1. Time and Subjects of the Survey: In 1990 and 1991, we conducted a survey of 5477 3-7-year-old children in kindergartens Habitat children’s health check, at the same time focus on sampling the incidence of dental caries. Second, the survey method: According to the national standard of nine children’s physical examination, at the same time made a detailed inspection of oral teeth. Third, the results: 1.1990 ~ 1991 5477 3 to 7 years old children living with dental caries prevalence in 1990