Nance弓与横腭杆在直丝弓矫治中的联合应用  

A study on the combination of Nance arch and TPA in the use of straight-wire arch orthodontic treatment

作　　者：袁爽 唐莉红 李天豪 翁思恩[2] 

机构地区：[1]上海静安区牙病防治所口腔正畸科,上海200040 [2]上海交通大学医学院附属第九人民医院·口腔医学院口腔正畸科,上海市口腔医学重点实验室,上海200011

出　　处：《上海口腔医学》2012年第3期350-353,共4页Shanghai Journal of Stomatology

摘　　要：目的：评价应用MBT直丝弓技术矫治安氏Ⅱ类Ⅰ分类错病例中Nance弓与横腭杆联合应用的支抗控制效果。方法：选择12~16岁安氏Ⅱ类Ⅰ分类错患者19例,分析应用Nance弓与横腭杆联合加强支抗治疗前、后的X线头影测量值及记存模型测量值的变化,采用SAS 8.0软件包对治疗前、后的测量数据进行配对t检验。结果：磨牙平均前移（1.97±0.696）mm,未超过拔牙间隙的1/3,U1-SN减小10.97°±3.81°;下颌平面角、面高比以及后牙弓宽度改变无显著差异（P〉0.05）;上颌前突软组织侧貌明显改善,Ls-E、Ls-Snpg和Cm-Sn-Ls的改变有显著差异（P〈0.01）。结论：Nance弓与横腭杆联合应用能在三维方向上起到可靠的支抗控制,是一种简单有效的非依赖性口内支抗系统。PURPOSE： To evaluate the effect of combination of Nance and TPA on the use of MBT appliance to treat Class Ⅱ division I malocclusion. METHODS： Nineteen cases of Class Ⅱ division I malocclusion, aged from 12 to 16 years, underwent Nance arch and TPA in the use of MBT appliance to reinforce molar anchorage. Cephalometric analysis and model measurements were conducted and compared before and after treatment using SAS8.0 software package. RESULTS： The average forward movement of the first maxillary molar was （1.97±0.696）mm,but still less than 1/3 of the extraction space.U1-SN reduced 10.97°±3.81°.There was no significant difference in GoGn-Sn angle, ALFH /AFH and posterior dental arch width （P〉0.05）.The soft tissue profile （Ls-E, Ls-Snpg, Cm-Sn-Ls） was improved remarkably （P〈0.01）. CONCLUSION： The combination of Nance and TPA might be effective and simple anchorage in three dimensions.

关 键 词：NANCE弓 横腭杆 安氏Ⅱ类Ⅰ分类错 支抗 

分 类 号：R783.5[医药卫生—口腔医学]