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拔除下颌第二磨牙掩饰治疗成人轻度骨性Ⅲ类错殆畸形
引用本文:翟俊辉,周倩,毕韡玮.拔除下颌第二磨牙掩饰治疗成人轻度骨性Ⅲ类错殆畸形[J].广东牙病防治,2014(3):158-161.
作者姓名:翟俊辉  周倩  毕韡玮
作者单位:大连市口腔医院正畸科,辽宁大连116021
摘    要:目的研究成人轻度骨性Ⅲ类错牙合]患者在拔除下颌第二磨牙矫治后软硬组织的变化。方法成人轻度骨性Ⅲ类错牙合]患行6例,38、48发育良好,在拔除下颌第二磨牙后采用直丝弓矫治器进行掩饰治疗。对治疗前后x线头颅侧位片进行测量分析,结果与矫治前相比,矫治后H角平均增大2.8°,UM—PP平均增加1.47mm,LM—MP平均减小1.11mm,SN—OP平均减小1.5°,下颌磨牙平均远中移动2.87mm,前牙反牙合]均得到纠正,后牙建说了正常的咬合关系、结论成人轻度骨性Ⅲ类错牙合]病例通过拔除下颌第二磨牙的掩饰治疗可以取得较好的治疗效果。

关 键 词:安氏Ⅲ类错猞  第二磨牙拔除  掩饰治疗

Effects of correction of mild classⅢ malocclusion with lower second molar extraction
ZHAI Jun-hui,ZHOU Qian,BI Wei-wei.Effects of correction of mild classⅢ malocclusion with lower second molar extraction[J].Journal of Dental Prevention and Treatment,2014(3):158-161.
Authors:ZHAI Jun-hui  ZHOU Qian  BI Wei-wei
Institution:. (Deparlment of Orthodontics, Dalian Stomatology Hospital, Dalian 116021, China)
Abstract:Objective To evaluate the dento-skeletal and profile changes in adult patients with Class Ⅲmalocclusion after camouflage orthodontic treatment with lower second molar extractions. Methods Six aduh patients with Class m maloeculsion (4 males, 2 females, 18.4 -24.5 years old) were ineluded in the study. Thev weretreated by SWA after extraetion of lower second molars and good occlusion relationship including third molars was established in all patients. Lateral cephalometrie films taken at the beginning and at the end of treatment were analyzed using cephahanetric analysis. Results After treatment, the profiles of all the patients were improved. The mean changes were as below: H angle was increased 2.8°; UM-PP was increased 1.47 mm and LM-MP was decreased 1. 11 mm, SN-OP angle was decreased 1. 5°, and the lower first molars was moved 2.87 mm posteriorly. The upper incisors were labially inclined 3 - 1 1.4°, but the lower ineisnrs were lingually moved 6 - 9.5°. The cross bite of anterior teeth was corrected, and the normal oc- clusion relationship was established in every patient. There was no significant change about SN-MP and the face height. Conclusions A good resuh could be achieved in adult patients with mild Class Ⅲ malocclusion after orthodontic treat- ment with lower second molar extrae.tions.
Keywords:Angle  Class Ⅲmalocclusion  Second molar extraction  Camouflage orthodontics
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