现代方丝弓矫治技术采用最适力来控制牙齿三维移动为主要特点,但由于其矫治器本身结构局限,使得治疗比较复杂。直丝弓矫治技术是一种高效的治疗错牙合畸形的方法,采用滑动法关闭拔牙间隙,使前牙整体内收,简化了矫治程序。在临床治疗中有相当一部分病例需拔牙矫治。本资料通过对 Modern square arch correction technology uses the most suitable force to control the three-dimensional movement of teeth as the main feature, but because of its structural limitations of appliance itself, making the treatment more complicated. Straight wire arch correction technique is an efficient method of treating malocclusion and deformity. Sliding method is adopted to close the extraction space so that the anterior teeth can be retracted as a whole, which simplifies the correction procedure. In clinical treatment, a considerable number of cases need to tooth extraction treatment. This information is correct