Nance弓-横腭杆-双磨牙带环联合支抗在治疗安氏Ⅱ~1类错中的应用  

Application of Nance-TPA-double molars band combined anchorage in Angle class Ⅱ division 1 malocclusion

作　　者：安晶涛[1] 王锐[2] 赵红艳[1] 邵玶[1] 张苗苗[1] 

机构地区：[1]哈尔滨医科大学口腔医学院正畸科,150001 [2]哈尔滨医科大学口腔医学院儿童口腔科,150001

出　　处：《实用口腔医学杂志》2008年第5期673-676,共4页Journal of Practical Stomatology

摘　　要：目的：评价Nance弓－横腭杆－双磨牙带环联合支抗应用于安氏Ⅱ^1类错[牙合]正畸治疗中增强磨牙支抗的效果，并探讨其机制和使用方法。方法：临床选择15～23岁安氏Ⅱ^1类错[牙合]患者12名，通过应用口内联合支抗增强上颌磨牙的支抗，对治疗前后X线头影测量值的变化进行分析。结果：矢状方向上，U6A-RL和U6S-RL分别增加1．13mm和1．64mm，但支抗磨牙前移未达到拔牙间隙的1／3；磨牙近中倾斜角度的变化无显著性（P〉0．05）。U1A-RL和U1E-RL分别减少2．38mm和4．96mm，上颌切牙唇倾角度减小15．22°，上颌突度减小1．25mm，差异均具有统计学意义（P〈0．05）。垂直方向上，支抗磨牙伸长量、下颌平面角和面高比例的变化均无显著性（P〉0．05）。结论：口内联合支抗能够在三维方向获得满意的支抗效果，是一种简单、高效的非依赖性口内强支抗系统。Objective：To evaluate the effects of Nance-TPA-double molars band combined anchorage applied in Angle class Ⅱ division 1 malocclusion and to discuss the mechanism. Methods：12 cases aged from 15 - 23 years old with Angle class Ⅱ division 1 malocclusion were chosen and combined anchorage were used to reinforce the upper first molar anchorage. Cephalometric analysis was performed before and after the treatment. Results：In the sagittal direction, U6A-RL and U6S-RL were increased 1.13 mm and 1.64 mm, but the mesial movement of the upper first molar were still less than 1/3 of the extraction space. The changes of mesial inclination of the molar were not significant（ P 〉 0.05 ）. U1A-RL and U1E-RL were reduced 2.38 mm and 4.96 mm. Reduction of axial inclination of the incisors and maxillary protrusion were 15.22° and 1.25 mm. There were significant differences in these changes（P 〈 0.05 ）. In the vertical direction, the changes of molar extrusion, MP-SN and ALFH/AFH were not significant （ P 〉 0.05 ）. Conclusion：The combined anchorage is a simple, effective and non-dependent strong anchorage system with three-dimensional anchorage function.

关 键 词：NANCE弓 横腭杆 双磨牙带环 支抗 

分 类 号：R783.5[医药卫生—口腔医学]