宁夏南部山区中学生口腔常见病抽样调查报告陶莉莉，王兵（附属医院口腔科）宁夏南部山区是回族主要集居地，交通闭塞，医疗条件差，近亲近缘婚配率高。为获得该地区口腔疾病自然发病率，作者在中学生中进行了抽样调查，现将结果报告如下。一、调查对象与方法调查采用随机... Sample survey of common oral diseases among middle school students in southern Ningxia region Tao Lili, Wang Bing (Affiliated Hospital of Stomatology) The southern mountainous region of Ningxia is the main population of Hui nationality, with traffic obstruction, poor medical conditions, and high relative mating rate among close relatives. In order to obtain the natural incidence of oral diseases in the area, the author conducted a sample survey among middle school students and now reports the results as follows. A survey of the survey objects and methods using random ...