【摘要翻译】【Am J Orthod Dentofacial Orthop 】Extreme dentoalveolar compensation in the treatment of Class
【中文文题】安氏III类错合治疗中牙齿槽骨的极限代偿
【作者】Guilherme Jansona, José Eduardo Prado de Souzab, Flávio de Andrade Alvesc, Pedro Andrade Jrc, Alexandre Nakamurab, Marcos Roberto de Freitasa, José Fernando Castanha Henriquesd
【杂志】Am J Orthod Dentofacial Orthop 2005;128:787-794
【英文摘要】The orthodontic treatment of an adult patient with a skeletal Class III malocclusion, increased anterior facial height, negative overjet, and bilateral posterior crossbite is presented. Treatment options included mandibular first premolar or third molar extractions with dentoalveolar compensation or combined surgical-orthodontic treatment. Mandibular third molar extraction with dentoalveolar compensation was the treatment choice. Biofunctional brackets, with accentuated lingual crown torque on the maxillary incisors and accentuated buccal crown torque on the mandibular incisors, were used. The anterior crossbite was corrected with intermaxillary elastics from the palatal aspect of the maxillary incisors to the labial aspect of the mandibular incisors. Class III elastics moved the maxillary teeth mesially and assisted in retruding the mandibular teeth. Patient compliance with the elastics was excellent, and satisfactory dentofacial esthetics were achieved. This treatment protocol has rigorous indications, and it is not a routine plan. The mechanotherapy and the pros and cons of this approach are discussed.
【中文摘要】:本文展示了一例骨性III类成人患者,该患者前面高过大,前牙反覆盖,双侧后牙反河。治疗方案有拔除下颌第一前磨牙或第三磨牙进行牙齿槽骨代偿的单纯正畸治疗和正畸-正颌手术联合治疗。最后选择了拔除第三磨牙进行牙齿槽骨代偿的单纯正畸治疗方案。治疗过程中使用了强调上前牙冠舌向转矩和下前牙冠唇向转矩的生物功能性托槽。前牙反河通过从上前牙腭侧至下前牙唇侧的颌间牵引解除,颌间III类牵引则用于促使上牙弓牙齿的近中移动及内收下牙弓牙齿。患者颌间牵引的配合很好,最终获得了令人满意的牙齿和面部的美学效果。此治疗方案有严格的适应征,不能作为常规使用。其治疗的力学机制以及优缺点也在文中给予了讨论。