Extreme dentoalveolar compensation in the treatment of Class III malocclusion
Extreme dentoalveolar compensation in the treatment of Class III malocclusion
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DOI：
10.1016/j.ajodo.2004.08.018
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发表时间：
2005-12-01
影响因子：
3
通讯作者：
Henriques, JFC
中科院分区：
文献类型：
--
作者：
Janson, G;de Souza, JEP;Henriques, JFC
正畸治疗的成人患者骨骼III类错牙合，增加前面部高度，负覆盖，和双侧后牙合提出。治疗方案包括下颌第一前磨牙或第三磨牙拔牙与牙槽牙补牙或联合手术正畸治疗。下颌第三磨牙拔除配合牙槽代偿是治疗的选择。采用生物功能托槽，在上颌切牙上增加舌冠扭矩，在下颌切牙上增加颊冠扭矩。采用上颌门牙腭侧到下颌门牙唇侧的上颌间弹性矫治前牙合。III类弹性材料使上颌牙向中移动，并辅助下颌骨牙的后缩。患者对弹性材料的依从性很好，达到了满意的牙面美学。这个治疗方案有严格的适应症，它不是一个常规计划。讨论了机械疗法及其优缺点。
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 clentoalveolar compensation or combined surgicalorthodontic 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.