下颌骨后缩伴前牙正常覆盖青少年患者Twin-block治疗效果分析

doi:10.19439/j.sjos.2023.04.016

上海口腔医学 ›› 2023, Vol. 32 ›› Issue (4): 422-427.doi: 10.19439/j.sjos.2023.04.016

下颌骨后缩伴前牙正常覆盖青少年患者Twin-block治疗效果分析

马晓晴¹, 陆雯², 叶茂¹, 邢允波¹, 钱文昊¹, 张玲¹

1.上海市徐汇区牙病防治所口腔正畸科,上海 200032;
2.南京医科大学附属口腔医院牙体牙髓病科,江苏南京 211166

收稿日期:2022-04-29 修回日期:2022-07-27 发布日期:2023-09-07
通讯作者: 张玲,E-mail:tracey_ling@163.om
作者简介:马晓晴（1978-）,男,硕士,副主任医师,E-mail:mxq780927@163.com

Effect of Twin-block in adolescents with mandibular retrusion and normal anterior overjet

MA Xiao-qing¹, LU Wen², YE Mao¹, XING Yun-bo¹, QIAN Wen-hao¹, ZHANG Ling¹

1. Department of Orthodontics, Shanghai Xuhui District Dental Center. Shanghai 200032;
2. Department of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University. Nanjing 210029, Jiangsu Province, China

Received:2022-04-29 Revised:2022-07-27 Published:2023-09-07

摘要/Abstract

摘要： 目的了解改良固定式Twin-block对下颌骨后缩伴正常覆盖患者的治疗效果。方法选择下颌骨后缩伴前牙正常覆盖青少年患者36例,咬合重建目标为软组织颏前点前移达零子午线,采用改良固定式Twin-block联合下颌外斜线微种植支抗钉促进下颌骨生长,12个月后分步拆除矫治器,观察颌位的稳定性,固定矫治调整咬合关系,改善侧貌。采用SPSS 13.0软件包对功能矫治前后以及固定矫治前后所测数据进行配对t检验。结果治疗结束后,颏前点明显前移,下颌体长度明显增加,患者侧貌由凸面型变为直面型。功能矫治前后比较结果显示,Co-Gn、SNB、U1-SN、U6-0°、U1-0°、U1-L1、前牙覆、覆盖、Pog's-0°、L1-0°及面下1/3高度均发生明显变化（P<0.05）;固定矫治前后比较结果显示,PP-MP、SN-MP、U6-0°、IMPA、L1-0°、U1-SN、U1-L1、前牙覆、覆盖发生明显变化（P<0.05）。结论改良固定式Twin-block联合微种植钉可有效改善下颌骨后缩伴正常覆盖患者的侧貌。

关键词: Twin-block, 外斜线微种植钉, 零子午线, 功能矫治, 青少年, 下颌骨后缩

Abstract: PURPOSE: To investigate the therapeutic effect of modified fixed Twin-block on patients whose mandible was retruded and anterior overjet was normal. METHODS: Thirty-six adolescents with mandibular retrusion and normal anterior overjet were selected. The goal of occlusal reconstruction was to move the soft tissue pogonion forward to the zero meridian(0°). Fixed Twin-block combined with the mini-implants on the mandibular buccal shelf was used to promote mandibular growth. After 12 months, the appliances were removed step by step to observe the stability of the jaw relationship. Fixed orthodontic treatment was performed to achieve ideal occlusion and coordinated profile. SPSS 13.0 software package was used for Student's t test. RESULTS: The length of mandibular body increased significantly which facilitated the forward movement of the soft tissue pogonion, and the profile changed from convex to straight. Comparison of the results before and after Twin-block treatment showed that Co-Gn, SNB, U1-SN, U6-0°, U1-0°, U1-L1, anterior overbite, anterior overjet, Pog's-0°, L1-0° and lower anterior facial height changed significantly (P<0.05). Comparison of the results before and after fixed orthodontic treatment showed that PP-MP, SN-MP, U6-0°, IMPA, L1-0°, U1-SN, U1-L1, anterior overbite and overjet changed significantly(P<0.05). CONCLUSIONS: Modified fixed Twin-block combined with mini-implants on the mandibular buccal shelf can effectively stimulate the mandibular growth and improve the lateral profile of patients with mandibular retrusion and normal overjet.

Key words: Twin-block, Mini-implant of the buccal shelf, Zero meridian, Functional orthodontic treatment, Adolescent, Mandibular retrusion

中图分类号:

R783.5

马晓晴, 陆雯, 叶茂, 邢允波, 钱文昊, 张玲. 下颌骨后缩伴前牙正常覆盖青少年患者Twin-block治疗效果分析[J]. 上海口腔医学, 2023, 32(4): 422-427.

MA Xiao-qing, LU Wen, YE Mao, XING Yun-bo, QIAN Wen-hao, ZHANG Ling. Effect of Twin-block in adolescents with mandibular retrusion and normal anterior overjet[J]. Shanghai Journal of Stomatology, 2023, 32(4): 422-427.

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下颌骨后缩伴前牙正常覆盖青少年患者Twin-block治疗效果分析

Effect of Twin-block in adolescents with mandibular retrusion and normal anterior overjet

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