“T”形曲配合交互牵引正畸矫治磨牙正锁(牙合)的临床观察

摘要

目的 探讨“T”形曲配合交互牵引正畸矫治磨牙正锁验的临床效果.方法 选择磨牙正锁(牙合)患者60例作为研究对象,“T”形曲配合交互牵引者30例为观察组,单独用交互牵引者30例为对照组,通过X线头影测量分析比较患者矫治前、后的变化.结果 观察组矫治磨牙正锁(牙合)所需时间较对照组更短,两组比较差异有统计学意义(P＜0.05).观察组矫治后下颌平面角(FH-MP)、腭平面-下颌平面角(PP-MP)、前面高(N-Me)、上颌第一磨牙近中颊尖到腭平面的垂直距离(U6-PP)以及下颌第一磨牙近中颊尖到下颌平面的垂直距离(L6-MP)的增大值均明显小于对照组,两组比较差异有统计学意义(P＜0.05).结论 “T”形曲配合交互牵引能够快速有效地矫治磨牙正锁(牙合),尤其适用于均角及高角型患者.%Objective To study the clinical effects of T-bending and mutual elastics for treating molar crossbite.Methods 60 cases of molar crossbite were selected as the research subjects and randomly and equally divided into 2 groups.The experimental group(30 cases) were treated with T-bending and mutual elastics.The control group (30 cases) were treated with mutual elastics a lone.The cephalometry radiographs before and after treatment were measured and compared between the two groups.Results The time correcting molar crossbite in the experimental group was short than that in the control group,the difference between them showed statistical significance(P＜0.05).The increment value of FH-MP,PP-MP,N-Me,U6-PP and L6-MP after correction in the experimental group were smaller than those in the control group with statistical difference(P＜0.05).Conclusion T-bending and mutual elastics can correct molar crossbite effectively and rapidly,which is especially suitable to the patients with average angle and high angle.