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  • 纪俐彣,赵彦惠,陈 蕾,等.MRC肌功能训练器和Twin-block矫治器治疗早期骨性Ⅱ类错牙合畸形患者的疗效[J].同济大学学报(医学版),2020,41(1):84-89.    [点击复制]
  • JI Li-wen,ZHAO Yan-hui,CHEN Lei,et al.Comparison of efficacy between MRC and the Twin-block appliance in treating class Ⅱ malocclusion[J].同济大学学报(医学版),2020,41(1):84-89.   [点击复制]
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MRC肌功能训练器和Twin-block矫治器治疗早期骨性Ⅱ类错牙合畸形患者的疗效
纪俐彣,赵彦惠,陈蕾,贺永春,姚元元,陈凤山
0
(同济大学附属口腔医院正畸科,上海 200072;日照市中医医院口腔科,山东 日照 276800)
摘要:
目的 评估MRC和Twin-block矫治器矫治早期骨性Ⅱ类错牙合畸形患者头影测量结果,分析疗效是否存在差异。方法 收集2016年12月—2018年12月至同济大学附属口腔医院诊治的25例骨性Ⅱ类错牙合患者。治疗组分为两组,包括MRC组13例患者(男性8例,女性5例),平均年龄(9.1±1.3)岁;Twin-block组12例患者(男性7例,女性5例),平均年龄(10.9±1.1)岁。治疗前和治疗后进行头颅定位侧位片拍摄。通过Dolphin软件对颅颌面软硬组织进行数据测量。采用SAS 9.13软件包对数据进行统计学分析。结果 MRC组下颌骨矢状和垂直向生长、下齿槽座角增大、上下齿槽座角减小、下切牙唇倾增加、上切牙舌倾、覆盖减小等差异有统计学意义(P<0.05)。Twin-block组患者的上下齿槽座角降低、下切牙唇倾增加、上切牙舌倾、覆盖减小等差异有统计学意义(P<0.05)。两组间差异无统计学意义(P>0.05)。结论 本研究结果表明,MRC与Twin-block矫治器矫治早期骨性Ⅱ类错牙合患者临床疗效基本相同。
关键词:  MRC肌功能训练器  Twin-block矫治器  早期矫治  安氏Ⅱ类错牙合  头影测量
DOI:10.16118/j.1008-0392.2020.01.015
投稿时间:2019-04-24
基金项目:国家自然科学基金(81670973)
Comparison of efficacy between MRC and the Twin-block appliance in treating class Ⅱ malocclusion
JI Li-wen,ZHAO Yan-hui,CHEN Lei,HE Yong-chun,YAO Yuan-yuan,CHEN Feng-shan
(Dept. of Orthodontics, School & Hospital of Stomatology, Tongji University, Shanghai 200072, China;Dept. of Stomatology, Rizhao Hospital of Traditional Chinese Medicine, Rizhao 276800, Shandong Province, China)
Abstract:
Objective To compare the efficacy of MRC and the Twin-block appliance in treatment of the early Class Ⅱ malocclusion. Methods Twenty-five patients with Class Ⅱ malocclusion were enrolled in our department during December 2016 to December 2018. Thirteen patients(8 boys and 5 girls, mean age 9.1) received treatment with MRC appliance and 12 patients(7 boys and 5 girls, mean age 10.9) received treatment with Twin-block appliance. Lateral cephalograms were taken before and after treatment. Craniofacial structures were measured in lateral cephalometry by application of Dolphin software. The data was analysed using SAS 9.13 software package. Results MRC group showed significant changes including sagittal and vertical growth of the mandible, increased SNB, reduced ANB, increased lower incisor proclination, retroclination of upper incisors, and overjet reduction. Twin-block group showed significant changes including reduced ANB, increased lower incisor proclination, retroclination of upper incisors, and overjet reduction. However, no significant difference was found between two groups. Conclusion The results of the current study indicated MRC has similar treatment effects as Twin-block appliance in treating Class Ⅱ malocclusion.
Key words:  MRC myofunctional appliance  Twin-block appliance  early intervention treatment  class Ⅱ malocclusion  cephalometry

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