玻璃离子(牙合)垫矫治安氏Ⅱ类2分类错(牙合)的临床研究

摘要

目的:探讨后牙玻璃离子??(牙合)垦配合固定矫治器矫治安氏Ⅱ类2分类错??(牙合)打开咬合的机制及临床使用要点.方法:选择安氏Ⅱ类2分类错??(牙合)患者30例,实验组15例采用后牙玻璃离子??(牙合)垫加固定矫治器,对照组15名采用上颌前牙平面导板加固定矫治器.X线头影测量分析比较患者矫治前后的变化.结果:X线头影测量结果分析显示实验组和对照组ANS-Me(mm)、N-Me(mm)、S-Go(mm)、U6-PP(mm)、L6-MP(mm)、U1/SN(°)、L1/MP(°)增大,而U1-PP(mm)、U1/L1(°)、Overbite(mm)减小,差异均有统计学意义,说明前后面高增加,上下后牙伸长,上前牙压低,上下前牙唇倾.两组相比,除U1/SN、L1/MP、U1/L1外其余指标均无明显差异.结论:后牙玻璃离子牙舒婆配合固定矫治器是治疗氏Ⅱ类2分类错??(牙合)简单有效的方法.%Objective To study the mechanism and applicability of class ionomer cement occlusal pad of posterior teeth combined with fixed appliance in treatment of class Ⅱ division 2 malocclusions.Methods 30 cases of Angle class Ⅱ division 2 malocclusion were selected.15 patients were treated with class ionomer cement occlusal pad combined with fixed appliance and 15 cases were as controls.Their cephalometry radiographs were measured and analyzed before and after treatment.Results In both of groups, Anterior and posterior facial height (S-Go,N-Me,ANS-Me) were increased.Labial incline in upper and lower incisors (U1-SN,L1-MP) and interincisa angle (U1-L1) were decreased.The posterior teeth (U6-PP,L6-MP)were extruded and the upper incisors (U1-PP)were intruded.The overbite was decreased.Compared the two groups,in addition to U1/SN,L1/MP and U1/L1,the other indexes were all no statistical variances.Conclusion Class ionomer cement occlusal pad of posterior teeth with fixed appliance can be used effectively for class Ⅱ division 2 malocclusion.