我们于1995年9～11月，对我市3所幼儿园、2所小学、1所中学年龄3～18岁的儿童及青少年3019名．进行了牙列错畸形的调查．现报道如下：1方法与标准在自然光线下，由专科医师1人检查，另1人作记录。按乳牙列朗、混合牙列期分别进行统计分析。以”个别正常股”为标准．乳牙间隙有 From September to November 1995, we conducted a survey of 3,019 children and adolescents aged 3 to 18 years old in 3 kindergartens, 2 primary schools and 1 secondary school in our city. An investigation of dentition malocclusion was conducted. Are reported as follows: 1 methods and standards in natural light, by a specialist examiner, another person for record. According to the deciduous teeth Langlang, mixed dentition period were statistically analyzed. To “individual normal stocks” as the standard. Teeth gap there