Efficacy of distraction osteogenesis of mandible in adult patients with hemifacial deformity
10.3760/cma.j.issn.1671-0290.2017.06.005
- VernacularTitle:成人半侧颜面短小畸形下颌骨牵张成骨术的手术效果
- Author:
Yinan YANG
1
;
Zhiyong ZHANG
;
Lei SHI
;
Wei LIU
;
Lin YIN
;
Hongyu YIN
;
Shi FENG
;
Xiaojun TANG
Author Information
1. 中国医学科学院整形外科医院颌面整形外科中心
- Keywords:
Adult;
Hemifacial microsomia;
Distraction osteogenesis;
Three-dimensional measurement;
Recrudescence
- From:
Chinese Journal of Medical Aesthetics and Cosmetology
2017;23(6):375-378
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate recurrence after mandibular distraction osteogenesis in adult patients with hemifacial microsomia using the digital three dimensional measurement.Methods Nine adult hemifacial microsomia patients were evaluated using the method of digital measurements with three dimensional computed tomography.Three observation points were studied:pre-operation (T0),post-operation (T1) and follow-up (T2).The length of ramus (H for normal side and h for affected side),the length of body (L for normal side and l for affected side) and distance between pogonion and facial midline (D) were measured and the recurrence rate (R) was calculated.Results Percentages of h/H at T0,T1,T2 were (58.19±12.06)％,(87.09±17.92)％and (81.13±30.57)％,which had statistical significance respectively.2.Percentage of l/L at T0,T1,T2 were (87.70±7.86)％,(90.69± 5.77) ％ and (90.11±5.62)％,respectively,which had statistical significance between T0 and T1.3.Lengths of D at T0,T1,T2 were (13.66±3.28) mm,(4.926±1.75) mm and (6.616±1.82) mm,respectively,which had statistical significance between T0,T1 and T0,T1.4.Average R was (22.80± 9.73) ％.Conclusions Varying degrees of recurrence do happen in both ramus and body of mandibular after distraction osteogenesis.While it is demonstrated that the mandible grows obviously after operation compared to that pre-operation,Meanwhile,the facial symmetry is also improved significiantly.
