拔牙矫治是一种重要的牙错矫治手段 ,拔牙模式的选择 ,不但取决于当时的矫治理论和可供选择的矫治方法 ,同时与正畸医师的设计、正畸治疗开展的普遍性 ,以及社会对正畸的认识程度等因素有关 ,从一定意义上反映出特定时期和地区口腔正畸的发展状况。拔除 4个双尖牙的不同拔牙 Tooth extraction is an important method of tooth decay treatment. The choice of tooth extraction mode depends not only on the orthodontic theory and the available treatment methods, but also on the orthodontic design, the universality of orthodontic treatment, and The level of social awareness of orthodontics and other factors, from a certain sense, reflects the specific period and region orthodontic development. Remove the four pairs of canine teeth different extraction