Nance弓-横腭杆-双磨牙带环联合支抗与口外弓增强磨牙支抗的比较研究  

Comparative study of Nance-TPA-double molars band combined anchorage and facebow in reinforcing the upper first molar anchorage

作　　者：安晶涛[1] 王锐[2] 赵红艳[1] 邵玶[1] 张晔[1] 

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

出　　处：《哈尔滨医科大学学报》2009年第4期386-388,共3页Journal of Harbin Medical University

摘　　要：目的比较研究Nance弓-横腭杆-双磨牙带环联合支抗与口外弓增强磨牙支抗的效果。方法临床选择15-26岁安氏Ⅱ^1类错殆患者24例，随机分为两组，分别应用口内联合支抗和口外弓增强上颌磨牙的支抗，并对两组治疗前后X线头影测量值的变化进行分析。结果矢状方向上，口内联合支抗组的U6A-RL和U6s-RL分别增加1．13mm和1．64mm，口外弓组为0．95mm和1．34mm，但均未达到拔牙间隙的1／3；两组的磨牙近中倾斜角度的变化均无显著性（P〉0．05）。口内联合支抗组的U1A-RL和UiE-RL分别减小2．38mm和4．96mm，口外弓组为2．69mm和5．04mm，两组的上颌切牙唇倾角度分别减小15．22度和13．15度，上颌突度分别减小1．25mm和1．50mm，差异均具有统计学意义（P〈0．05）。垂直方向上，两组的支抗磨牙伸长量、下颌平面角和面高比例变化均无显著性（P〉0．05）。结论口内联合支抗具有与传统口外弓同样的强支抗效果，且戴用不需依赖患者配合，易被患者接受。Objective To compare the effects in reinforcing the upper first molar anchorage with Nance-TPA-double molars band combined anchorage and with facebow. Methods Twenty-four cases aged -15 26 years with Angle class Ⅱ division 1 malocclusion were chosen and divided into 2 groups. Combined anchorage and facebow were used respectively 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 in combined anchorage group, while 0.95 mm and 1.34 mm in facebow group, but all less than 1/3 of the extraction space. The changes of mesial inclination of the molar were not significant（P 〉 0.05 ）. UIA-RL and U1E-RL were reduced 2.38 mm and 4.96 mm in combined a/lchorage group, while 2.69 mm and 5.04 mm in facebow group. Reduction of axial inclina- tion of the incisors were 15.22° and 13.15° respectively, and that of maxillary protrusion were 1.25 mm and 1.50 mm, there was significant difference 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 can provide maximum anchorage as same as traditional facebow, and can be accepted easily by patients.

关 键 词：NANCE弓 横腭杆 双磨牙带环 口外弓 支抗 

分 类 号：R783.5[医药卫生—口腔医学]