上海口腔医学

上海口腔医学 ›› 2025, Vol. 34 ›› Issue (3): 291-297.doi: 10.19439/j.sjos.2025.03.013

• 论著 • 上一篇    下一篇

新型固定式Twin-block矫治器治疗青春期骨性Ⅱ类错畸形的疗效分析

丁盟1,2,3, 张薇1, 沈群1, 陈玉成1, 张慧1, 葛非凡1,2, 杭梦月1,2, 吴建华1   

  1. 1.合肥市口腔医院,安徽医科大学合肥口腔临床学院,安徽 合肥 230001;
    2.皖南医学院口腔医学院,安徽 芜湖 241000;
    3.安徽医科大学附属口腔医院,安徽 合肥 230032
  • 收稿日期:2024-01-03 修回日期:2024-02-07 出版日期:2025-06-25 发布日期:2025-06-24
  • 通讯作者: 吴建华,E-mail：wujianhua629@163.com
  • 作者简介:丁盟（1998-）,女,硕士,E-mail: dm13033030711@163.com
  • 基金资助:
    2023年合肥市卫生健康应用医学科研重点项目（Hwk2023zd002）

A new fixed Twin-block appliance in the treatment of adolescent patients with skeletal Class Ⅱ malocclusion

Ding Meng1,2, Zhang Wei1, Shen Qun1, Chen Yucheng1, Zhang Hui1, Ge Feifan1,2, Hang Mengyue1,2, Wu Jianhua1   

  1. 1. Hefei Stomatology Hospital & Anhui Medical University Hefei School of Stomatology. Hefei 230001;
    2. Dental School, Wannan Medical College. Wuhu 241000;
    3. Stomatological Hospital, Anhui Medical University. Hefei 230032, Anhui Province, China
  • Received:2024-01-03 Revised:2024-02-07 Online:2025-06-25 Published:2025-06-24

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摘要： 目的: 评价一种新型固定式Twin-block矫治器治疗青春期骨性Ⅱ类错畸形的临床疗效。方法: 选择年龄10~13岁的骨性Ⅱ类下颌骨后缩患者21例,使用一种新型固定式Twin-block矫治器进行功能矫形治疗,治疗前后拍摄全景片及头颅侧位片并进行头影测量。结果: 治疗过程中未出现矫治器松动、脱落,平均疗程为(11.42±1.78)个月。治疗前后矢状向测量指标中,下颌骨位置(SNB)、下颌骨综合长度(Co-Gn)、鼻唇角(Cm-Sn-UL)、髁突矢状向位置(Pcd-S)、下唇突度(LL-SnPg)显著增大（P<0.05）;上下颌骨相对位置(ANB)、Y轴角(SGn/FH)、上前牙倾斜度(U1/SN)、颏唇沟深度(Si-LLPg')显著减小(P<0.05);上颌骨位置(SNA)、下颌后部位置(S Vert-Co)、下颌体长度(Go'-Me)、下前牙倾斜度(IMPA),上下中切牙角度(U1/L1)、上唇突度(UL-SnPg')的差异无统计学意义(P>0.05)。垂直向测量指标除后面高(S-Go')、上前牙垂直向距离(U1-PP)、平面角(SN/OP)、下颌高度(Ar-Go')、下颌支高度(Co-Go)显著增加外(P<0.05),下牙列垂直向位置(Ll-MP、L6-MP)、上后牙垂直向距离(U6-PP)、前面高(N-Me)、面高指数(S-Go'/N-Me)、下颌平面角(MP/SN)均无显著改变(P>0.05)。结论: 新型固定式Twin-block矫治器可显著促进下颌骨生长改建,有效进行垂直向控制,内收前牙同时改善患者侧貌,临床疗效可靠。

关键词: 固定式Twin-block矫治器, 骨性Ⅱ类错畸形, 功能矫治, 垂直向控制

Abstract: PURPOSE: To evaluate the clinical effect of a new fixed Twin-block on adolescent patients with skeletal ClassⅡ malocclusion. METHODS: Twenty-one patients aged 10-13 years with skeletal ClassⅡ malocclusion with mandibular retrusion were chosen for functional treatment using a new fixed Twin-block. Before and after treatment, panoramic and cephalometric films were taken, and the observation indexes were measured and recorded. RESULTS: There was no loosening or destruction of the appliance during treatment, the mean duration of treatment was (11.42±1.78) months. The position of the mandible(SNB), the length of the mandible (Co-Gn), nasolabial angle (Cm-Sn-UL), condylar sagittal position(Pcd-S), the lower labial protrusion distances (LL-SnPg') were significantly increased (P<0.05) after treatment, and the relative position of the maxilla and mandible (ANB), Y-axis angle(SGn/FH), the inclination of the maxillary incisors (U1/SN), and the depth of the mental-labial sulcus (Si-LLPg') reduced(P<0.05). Maxillary position(SNA), posterior mandibular position(S Vert-Co), mandibular length(Go'-Me), the mandibular incisor inclination (IMPA), and upper and lower mesial incisor angles(U1/L1), protrusion of the upper lip (UL-SnPg') were changed but without significant difference(P>0.05). The vertically orientated measurements of the vertical position of the lower dentition(Ll-MP), L6-MP, the vertical distance of the upper and posterior teeth (U6-PP), anterior height (N-Me), facial height index(S-Go'/N-Me), and mandibular plane angle (MP/SN) did not change significantly(P>0.05), while the posterior height(S-Go'), the vertical position of the upper dentition(U1-PP), occlusal plane angle (SN/OP), mandible height (Ar-Go'), the mandible ramus height(Co-Go) was increased significantly (P<0.05). CONCLUSIONS: New fixed Twin-block significantly promotes mandibular growth and provides effective vertical control, improves the facial profile by retracting the maxillary incisors, and the clinical effect is reliable.

Key words: New fixed Twin-block, Skeletal Class Ⅱ malocclusion, Functional orthodontic treatment, Vertical control

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