期刊
JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY
卷 49, 期 11, 页码 1054-1063出版社
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.jcms.2021.06.013
关键词
Hemifacial microsomia; Elastic traction; Distraction osteogenesis
资金
- Three-year plan for promoting clinical skills and clinical innovation in municipal hospitals by Hospital Development Center, Shanghai [16CR2010A]
- Clinical Research Program of Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine [JYLJ031]
- Fundamental research program funding of Ninth People's Hospital affiliated to Shanghai Jiao Tong University School of Medicine [JYZZ027]
- Research Program of Science and Technology Commission of Shanghai Municipality [17411964100]
This study aimed to evaluate the effectiveness of using elastic traction during the active period of distraction osteogenesis in increasing vertical extension. Results showed that elastic traction-assisted distraction osteogenesis improved traction efficiency and facial symmetry in patients with Pruzansky-Kaban Type II mandibular deformity.
In this study, the aim was to assess whether using elastic traction during the active period of distraction osteogenesis could effectively increase the vertical extension. Patients with Pruzansky-Kaban Type II mandibular deformity were recruited and randomly assigned into Elastic traction + Distraction Osteogenesis group or Distraction Osteogenesis group, respectively. During the active period, the experimental group received orthodontic elastic traction 3 days after distraction osteogenesis implantation, while the control group received no treatment. All the participants underwent computed tomography (CT) examination before surgery, at the end of the active period, 6 months and 2 years after distraction osteogenesis tractor implantation. The primary outcome was the effective vertical extension rate of the mandible from the baseline to the end of the active period after operations, and there were 7 secondary outcomes used. 70 patients were included. The effective vertical extension rates were 85.021% +/- 7.432% (mean +/- SD) and 68.811% +/- 9.510% (mean +/- SD) in the experimental and control groups, respectively (P = 0.001). The average distances between the lower middle incisor point to the sagittal plane at the end of the active period were 2.485 +/- 1.411 mm and 3.938 +/- 2.293 mm in the experimental and control groups, respectively (P = 0.026). At the end of the active period of distraction osteogenesis, the average values of the mandibular occlusal plane canting were-4.887 +/- 3.126 mm and-0.177 +/- 4.029 mm in the experimental and control groups, respectively (P = 0.026). Elastic traction-assisted distraction osteogenesis could improve traction efficiency and facial symmetry. (c) 2021 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.
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