对安徽省广德县城关镇所属 4所小学的 2 134名学生的牙牙合系统进行了调查 ,以了解本地区少儿错牙合畸形的患病率及错牙合类型 ,现报告如下。1　材料与方法1.1　资料　 2 134名调查对象中 ,男性 110 9人 ,女性 10 2 5人 ,年龄 7～ 14岁。1.2　方法　室内自然光线下进行检查 ,记 An investigation was conducted on the occlusal system of 2,134 pupils in 4 primary schools affiliated to Chengguan Town, Guangde County, Anhui Province, so as to understand the prevalence of malocclusion and the type of malocclusion in this area. The report is as follows. 1 Materials and Methods 1.1 Information 2 134 surveyed objects, 1109 were males, 1025 females, aged 7 to 14 years. 1.2 Methods indoor under natural light to check, remember