我们自1988年10月至1989年4月,对漳州市芗城区及龙海县4所中学学生进行了错(牙合)畸形发病情况调查,现报告如下。一、调查对象与方法(牙合)随机挑选该4所中学12～20岁具有恒牙列的中学生共4470名。根据调查内容制定统一表格,除姓名、性别、年龄及家族史由学生填写外,病史、生活史、面颌形态、牙齿数目、排列情况、牙弓形态和咬(牙合)关系等项目均由口腔专科医师详细询问、检 From October 1988 to April 1989, we conducted a survey on the incidence of malocclusion in four secondary schools in Xiangcheng District and Longhai County of Zhangzhou City. The report is as follows. First, the subjects and methods (occlusal) random selection of the four secondary schools of 12 to 20 years old with permanent dentition of a total of 4470 secondary school students. According to the survey to develop a unified form, in addition to the name, sex, age and family history by the students to fill in, history, life history, facial jaw morphology, the number of teeth, arrangement, dental arch and bite occlusion relationship projects Oral specialist asked in detail, seized