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中华口腔医学研究杂志(电子版) ›› 2010, Vol. 4 ›› Issue (04) : 384 -387. doi: 10.3877/cma.j.issn.1674-1366.2010.04.012

临床研究

口外弓推上磨牙向后矫治上颌轻度前突
李惠忠1,(), 姚兆友2   
  1. 1.523000 东莞市人民医院第三门诊部口腔中心
    2.523000 东莞市人民医院第三门诊部口腔颌面外科
  • 收稿日期:2010-06-28 出版日期:2010-08-01
  • 通信作者: 李惠忠

The clinical evaluation of correcting mild maxillary protrusion by molar distalization with face-bow appliance

Hui-zhong LI1,(), Zhao-you YAO1   

  1. 1.Department of Stomatology of Dongguan People's Hospital, Dongguan 523000, China
  • Received:2010-06-28 Published:2010-08-01
  • Corresponding author: Hui-zhong LI
引用本文:

李惠忠, 姚兆友. 口外弓推上磨牙向后矫治上颌轻度前突[J/OL]. 中华口腔医学研究杂志(电子版), 2010, 4(04): 384-387.

Hui-zhong LI, Zhao-you YAO. The clinical evaluation of correcting mild maxillary protrusion by molar distalization with face-bow appliance[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2010, 4(04): 384-387.

目的

探讨口外弓推上磨牙向后矫治上颌轻度前突的临床效果。

方法

回顾性研究东莞市人民医院收治的30 例替牙晚期安氏Ⅱ类1 分类上颌前突患者的临床资料,先用口外弓推上磨牙向后矫治,然后用方丝弓矫治器治疗,对治疗前后相关的软硬组织X 线头影测量对比分析。

结果

所有病例矫治后,上前牙突度及唇倾度得到改善,磨牙关系调整为中性。 Mss-Y 平均后移4.5 mm,Iss-Y 平均缩小4.47 mm,⊥-SN 平均缩小14.33°,⊥-T 平均抬高16.21°,差异均有统计学意义(P <0.05)。

结论

通过口外弓推上磨牙向后矫治上颌轻度前突疗效确切,效果明显,值得临床推广应用。

Objective

To investigate clinical result of correcting mild maxillary protrusion by molar distalization with face-bow appliance.

Methods

A retrospective study on clinical data of 30 patients with Class Ⅱmalocclusion and maxillary protrusion was carried out.The maxillary first molars were moved distally by face bow, and then by Edgewise appliance. The cephalometric films before and after treatment were measured and compared.

Results

The position of anterior teeth were improved significantly in all patients. The average reduction of Mss-Y, Iss-Y and ⊥-SN were 4.5 mm, 4.47 mm and 14.33°. The average increase of ⊥-T was 16.21°. There was statistically significant difference before and after treatment.

Conclusion

The clinical result of face-bow appliance was significant in the correcting of mild maxillary protrusion,and should be promoted clinically.

图1 X 线头影测量项目示意图 1:Mss-Y:上第一磨牙冠近中点到Y 轴的距离; 2:Tis-Y:下中切牙切缘到Y 轴的距离; 3:Iss-Y:上中切牙切缘到Y 轴的距离; 4:⊥-SN:上中切牙长轴与前颅底平面形成的后下夹角; 5:T-MP:下中切牙长轴与下颌平面所形成的后上夹角; 6:⊥-T:上、下中切牙长轴之间的夹角
表1 30 例上颌前突患者治疗前后X 线头影测量结果(
图2 矫治前头颅侧位片
图3 矫治后头颅侧位片
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