Echchadi Mohamed El Mehdi
286, boulevard Smara, Casablanca, Morocco.
Int Orthod. 2014 Jun;12(2):171-87. doi: 10.1016/j.ortho.2014.03.009. Epub 2014 May 9.
The aim of this article is to describe our therapeutic approach in the management of Class III malocclusions requiring repositioning of the anterior-inferior segment. This approach is based on the reasoned use of selective alveolar corticotomies in anchorage management. The patient was a 17-year-old young woman presenting severe antero-inferior crowding, a Class III malocclusion and residual spaces in the upper arch. Orthodontic treatment consisted of extraction of the mandibular 1st premolars and maximum anchorage. A local mandibular corticotomy was performed prior to orthodontic treatment from the distal aspect of the right canine to the distal surface of the left canine, sparing the premolar segments. The maxillary arch received no corticotomy and was treated by conventional orthodontic techniques. En masse retraction of the 6 antero-inferior teeth was done using sliding mechanics. Active treatment was completed in 8 months. The corrections are still stable 2 years post-retention.
本文旨在描述我们对需要重新定位前下牙段的III类错牙合畸形的治疗方法。该方法基于在支抗管理中合理使用选择性牙槽骨皮质切开术。患者为一名17岁年轻女性，表现为严重的前下牙拥挤、III类错牙合畸形和上颌牙弓剩余间隙。正畸治疗包括拔除下颌第一前磨牙并采用最大支抗。在正畸治疗前，从右侧尖牙远中至左侧尖牙远中面进行局部下颌骨皮质切开术，保留前磨牙段。上颌牙弓未进行皮质切开术，采用传统正畸技术治疗。使用滑动矫治技术整体后移6颗前下牙。主动治疗在8个月内完成。保持2年后，矫治效果仍然稳定。
