The long term stability of skeletal class III malocclusion after orthodontic-surgery:A meta-analysis / 实用口腔医学杂志

ABSTRACT

Objective:To analyze the long term stability of the hard and soft tissues of the skeletal class III malocclusion after ortho-dontic-surgery by Meta-analysis.Methods:The randomized controlled trials(RCT),quasi-randomized controlled trials and clinical case-control trials(CCT)about the long-term stability of skeletal class III malocclusion after orthodontic-surgery was collected from Co-chrane Library,PubMed,Medline,CNKI,VIP and Wanfang databases from inception to December 31,2013 by literature search.Two professionally trained reviewers evaluated the quality of the screened literatures,scored literatures with the NOS evaluation tool,and collectd data and information of the literatures with medium and higher quality.Revman5.2 was used for the Meta-analysis.Results:4 CCTs articles and 178 cases were included.The results of Meta-analysis showed that1.The stability of the hard tissuethe differ-ence of SNA(WMD =-0.58,95%CI[-1.18,0.02]),SNB (WMD =0.25,95%CI[-0.42,0.91]),ANB(WMD =-0.70, 95%CI[-1.44,0.04])and MP-SN(WMD =0.39,95%CI[-0.25,1.04])at post-operation and 3 years after operation had no statistical significance.Point A remained relatively stable position and point B had some replace 3 years after surgery compared with that at post-operative.2.The stability analysis of soft tissuethe healing effect of the soft tissue was stable,except the LowerlipeNperp had some recurrence 3 years after surgery.Conclusion:In the long term,after orthodontic and surgical treatment for skeletal class III malocclusion the hard and soft tissues kept stabile except a little replapse of the mandibular and the LowerlipeNperp.