The effect of mandibular distraction osteogenesis on the masseter muscle in hemifacial microsomia deformities
WANG Xuan
FENG Shi
LIU Wei
YIN Lin
SHI Lei
YANG Yi-nan
YIN Hong-yu
TANG Xiao-jun
YANG Bin
ZHANG Zhi-yong
Abstract：Objective To explore the effect of mandibular distraction osteogenesis on the masseter muscle in cases of hemifacial microsomia deformity.Methods From February 2010 to March 2015,25 cases of hemifacial microsomia deformity were retrospectively analyzed.Three-dimensional images of masseter muscle and cranial bones were reconstructed through Mimics software,and the volume of the masseter muscle before and after mandibular distraction osteogenesis was measured.Results There was no difference in masseter muscle volume in the uninjured side,pre-and post-surgery (P＞0.05).The volume of the masseter muscle after mandibular distraction osteogenesis was significantly increased compared to pre-operation (P＜0.05).The increased volume of the masseter muscle between type ⅡA and ⅡB hemifacial microsomia deformity patients after mandibular distraction osteogenesis showed no difference (P＞0.05).There was no difference of the increased amount between the mandibular ramus posterior border height and masseter muscle volume (P＞0.05).Conclusion Mandibular distraction osteogenesis may help to increase volume and promote growth of the masseter muscle in children with hemifacial microsonia deformity.It can improve the defect of muscle soft tissue in children with minor hemifacial microsomia
Keywords：Hemifacial microsomia deformityMandibular distraction osteogenesisMasseter muscle
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 464-467 )