Application of digital planning in goniolpasty
10.3760/cma.j.issn.1009-4598.2018.01.003
- VernacularTitle: 数字化技术在下颌角截骨术中的应用
- Author:
Xiaoyan MAO
1
;
Lai GUI
;
Feng NIU
;
Jianfeng LIU
;
Ying CHEN
;
Qi JIN
;
Xi FU
Author Information
1. Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100144, China
- Publication Type:Clinical Trail
- Keywords:
Three-dimensional digitization;
Prominent mandibular angle;
Gonioplast;
Surgical template
- From:
Chinese Journal of Plastic Surgery
2018;34(1):9-13
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To design the aesthetic new gonion and osteotomy line for patients with prominent mandibular angle patients using computer-aided techniques, and to investigate the application of three-dimensional digital planning in gonioplasty.
Methods:From April 2016 to April 2017, 14 female patients with prominent mandibular angle underwent preoperative surgical design and surgical simulation using digital technology. Gonioplasty was performed under the guide of surgical templates, preoperative, surgical simulation and postoperative data were measured including bilateral mandibular angles, the height of ramus(Co-Go) and the length of mandibular body(Go-Me). Paired t test was used to compare the differences between surgical simulation and postoperative measurements.
Results:Gonioplasty was performed in 14 patients successfully, and all were satisfied with their facial outcomes. The mandibular angle was improved from 113.86°±4.11° to 124.52°±1.26° on the left side, and 114.30°±4.01° to 124.29°±1.24° on the right side respectively. The average ratio of Go-Me/Co-Go was 2.011 on both sides after operation, which was very close to surgical planning. No significant differences were found between surgical planning and postoperative measurements with respect to mandibular angle or the ratio of Go-Me/Co-Go on both sides(P>0.05). The deviations between them were 1.00°±0.68° and 0.058±0.038 on the left side, and 0.85°±0.63° and 0.072±0.053 on the right side respectively.
Conclusions:Computer-assisted gonioplasty could improve the efficiency and accuracy of surgery, reduce the risk of surgical complications, and attain higher patients′ satisfaction.
