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尖牙向后8字结扎(Laceback)是Bennett-Mclauphlin直丝弓矫治技术在整平排齐阶段中重要的操作步骤.Laceback配合主弓丝未端弯曲(Cinchback),在整平排齐阶段的支抗控制中起到了有效的作用,它避免了整平排齐阶段中前牙唇倾、覆盖加大的发生,并且获得尖牙整体远中移动.我们将Bennett—Mclauphlin直丝弓中这一技术应用到方丝弓矫正技术的第一阶段,以使牙弓的整平排剂与尖牙的远中移动同步进行,同时使切牙的凸距也相应地减小,收到了良好的治疗结果.
The Laceback is an important step in the leveling operation of the Bennett-Mclauphlin straight wire appliance.Laceback, in conjunction with the Cinchback of the main arch wire, Support control has played an effective role, which avoids flattening phase of the anterior lip lip tilt, cover the occurrence of increased, and get the whole distal canine movement we will Bennett-Mclauphlin straight wire in this technology Applied to the first phase of square wire arch correction technology, in order to dental arch placer and canine farther distal movement simultaneously, while the molar incisors correspondingly reduced, received good treatment results.