我科自1982年起对20岁以上的30余例前牙拥挤患者采用拔牙减数治疗,经观察疗效满意,现将有完整资料记载前23例报告如下: 一、一般资料本组23例中,有19例伴有个别牙错位或扭转,4例多个多生牙。其中上前牙拥挤10例,下前牙拥 Our department from 1982 on more than 30 years ago over the age of more than 30 cases of crowded patients with anterior teeth reduction treatment, the observation of satisfactory results, there will be a complete data record before the 23 cases are as follows: First, the general information in this group of 23 cases , There are 19 cases with dislocation or torsion of individual teeth, 4 cases of multiple multiple teeth. 10 cases of which crowded on the front teeth, under the front teeth