上海口腔医学

上海口腔医学 ›› 2026, Vol. 35 ›› Issue (3): 325-330.doi: 10.19439/j.sjos.2026.03.017

• 论著 • 上一篇    下一篇

Twin block矫治器与Myobrace肌功能训练器治疗骨性Ⅱ类错畸形的疗效比较

黎金鹏1, 林燕2, 吴梦婷3, 江银华4   

  1. 1.浙江中医药大学口腔医学院,浙江 杭州 310053;
    2.丽水口腔医院 口腔正畸科,浙江 丽水 323000;
    3.丽水市人民医院 口腔科,浙江 丽水 323000;
    4.丽水口腔医院 口腔颌面外科,浙江 丽水 323000
  • 收稿日期:2025-11-25 修回日期:2026-01-05 发布日期:2026-07-02
  • 通讯作者: 江银华,E-mail: lsjyh1111@sina.com
  • 作者简介:黎金鹏(2000—),男,在读硕士研究生,E-mail: lijp00@163.com

Comparison of the efficacy of Twin block and Myobrace in the treatment of skeletal Class Ⅱ malocclusion

Li Jinpeng1, Lin Yan2, Wu Mengting3, Jiang Yinhua4   

  1. 1. School of Stomatology, Zhejiang Chinese Medical University. Hangzhou 310053;
    2. Department of Orthodontics, Lishui Stomatological Hospital. Lishui 323000;
    3. Department of Stomatology, Lishui People's Hospital. Lishui 323000;
    4. Department of Oral and Maxillofacial Surgery, Lishui Stomatological Hospital. Lishui 323000, Zhejiang Province, China
  • Received:2025-11-25 Revised:2026-01-05 Published:2026-07-02

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摘要： 目的: 评估Twin block矫治器与Myobrace肌功能训练器在儿童骨性Ⅱ类错畸形早期矫治中对颌面部软硬组织的影响,比较两者的疗效差异。方法: 选择2022年9月—2024年9月在丽水市人民医院进行早期矫治的骨性Ⅱ类错畸形患者28例。其中,14例接受Twin block矫治器治疗（Twin block组）,14例接受Myobrace肌功能训练器治疗（Myobrace组）。分别于治疗前(T0)和治疗后(T1)拍摄头颅侧位片,采用Uceph 4.2.1软件进行头影测量,比较两组患者颌面部软硬组织治疗前后变化的差异。结果: Twin block组SNB、FMA、IMPA、NP-FH、鼻唇角、FH-Ns-os、Z角增大,SNA、ANB、FMIA、U1-SN、U1-L1、覆盖、UL-EP、LL-EP减小,差异有统计学意义(P<0.05)。Myobrace组SNB、IMPA、覆盖、NP-FH、鼻唇角、FH-Ns-Pos、Z角增大,ANB、FMIA、U1-SN、LL-EP减小,差异有统计学意义(P<0.05)。两组治疗前后头影测量指标的变化量比较无显著差异(P>0.05)。结论: Twin block矫治器和Myobrace肌功能训练器均可有效改善儿童骨性Ⅱ类错畸形,两者早期矫治的疗效基本相同。

关键词: 骨性Ⅱ类错畸形, Twin block矫治器, Myobrace肌功能训练器, 早期矫治, 功能性矫治器

Abstract: PURPOSE: To evaluate the effects of Twin block appliance and Myobrace myofunctional appliance on craniofacial hard and soft tissues in the early treatment of skeletal Class Ⅱ malocclusion in children and to compare the therapeutic outcomes between the two appliances. METHODS: Twenty-eight children with skeletal Class Ⅱ malocclusion who received early functional treatment in Lishui People's Hospital from September 2022 to September 2024 were enrolled in this study. Fourteen patients received treatment with Twin block appliance (Twin block group) and fourteen with Myobrace myofunctional appliance (Myobrace group). Lateral cephalometric radiographs were taken before treatment (T0) and after treatment (T1), respectively. Cephalometric measurements were performed using Uceph 4.2.1 software to compare the differences in the changes of maxillofacial hard and soft tissues between the two groups before and after treatment. RESULTS: In Twin block group, SNB, FMA, IMPA, NP-FH, nasolabial angle, FH-Ns-Pos, and Z angle increased, while SNA, ANB, FMIA, U1-SN, U1-L1, overjet, UL-EP, and LL-EP decreased, the differences were statistically significant (P<0.05). In Myobrace group, SNB, IMPA, overjet, NP-FH, nasolabial angle, FH-Ns-Pos, and Z angle increased, while ANB, FMIA, U1-SN, and LL-EP decreased, the differences were statistically significant (P<0.05). There were no significant differences in the changes of cephalometric indices between the two groups before and after treatment (P>0.05). CONCLUSIONS: Both Twin block appliance and Myobrace myofunction appliance can effectively improve skeletal Class Ⅱ malocclusion in children, with essentially the same efficacy of early orthodontic treatment for the two devices.

Key words: Skeletal Class II malocclusion, Twin block appliance, Myobrace myofunctional appliance, Early treatment, Functional appliance

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