Wang Bo, Shen Guofang, Guo Qiuman, Fang Bing, Yu Hongbo
Department of Oral and Craniomaxillofacial Science.
Department of Periodontology.
J Craniofac Surg. 2019 Nov-Dec;30(8):e737-e740. doi: 10.1097/SCS.0000000000005742.
The purpose of this study was to quantitatively investigate the long-term effects of augmented corticotomy-assisted orthodontics in adult patients with alveolar defect in mandibular anterior region.
Thirty lower incisors with alveolar defect on the labial sides were included in this study from 10 adult patients received augmented corticotomy-assisted orthodontics in mandibular anterior region. Cone-beam computed tomography images were obtained before orthodontic treatment (T0), 3 months after augmented corticotomy (T1) and 2 years after removal of orthodontic appliance (T2). Measurements of variables at different time points were compared using Student-Newman-Keuls test.
Each patient completed augmented corticotomy-assisted orthodontics successfully. In the 30 subjects studied, root length and bone thickness on the labial side at 1/2 root length level were maintained from T0 to T2 (P >.05). Bone thickness at 3/4 root length level increased from T0 to T1 (P <.001), then decreased from T1 to T2 (P <.001), and which of T2 is greater than that of T0 (P <.001). Bone thickness at root apex level increased from T0 to T1 (P <.001), and remained steady from T1 to T2 (P >.05).
Augmented corticotomy-assisted orthodontics is a promising approach for the treatment of adult patients with alveolar defect, which showed stable long-term effect of bone augmentation and minimal periodontal iatrogenic sequelae during treatment.
本研究旨在定量调查增强型皮质骨切开辅助正畸治疗对下颌前部牙槽骨缺损成年患者的长期影响。
本研究纳入了10例接受下颌前部增强型皮质骨切开辅助正畸治疗的成年患者的30颗唇侧牙槽骨缺损的下切牙。在正畸治疗前（T0）、增强型皮质骨切开术后3个月（T1）和去除正畸矫治器后2年（T2）获取锥形束计算机断层扫描图像。使用Student-Newman-Keuls检验比较不同时间点变量的测量值。
每位患者均成功完成增强型皮质骨切开辅助正畸治疗。在研究的30名受试者中，从T0到T2，1/2根长水平处唇侧的牙根长度和骨厚度保持不变（P>0.05）。3/4根长水平处的骨厚度从T0到T1增加（P<0.001），然后从T1到T2降低（P<0.001），且T2时的骨厚度大于T0时的骨厚度（P<0.001）。根尖水平处的骨厚度从T0到T1增加（P<0.001），从T1到T2保持稳定（P>0.05）。
增强型皮质骨切开辅助正畸治疗是治疗成年牙槽骨缺损患者的一种有前景的方法，其在治疗期间显示出稳定的长期骨增量效果和最小的牙周医源性后遗症。
