微型种植体支抗与口外弓支抗对安氏Ⅱ类1分类错牙合畸形患者的矫治效果对比分析

Comparative Analysis of Correction Effects of Micro-implant Anchorage and Headgear Anchorage on Patients with ClassⅡDivision 1 Malocclusion

目的:分析比较微型种植体支抗与口外弓支抗对安氏Ⅱ类1分类错牙合畸形患者的矫治效果。方法:收集笔者医院95例安氏Ⅱ类1分类错牙合畸形患者临床资料,根据其治疗方法将之分为口外弓支抗(MIA组)46例和微型种植体支抗组(HGA组)49例,比较其矫正前后头影测量结果和模型测量结果,矫治时间和不良反应。结果:治疗后,MIA组牙合平面与SN平面夹角(OP-SN)、上颌中切牙牙长轴与SN平面夹角(U1-SN)、上唇突度、下唇突度、上唇最凸点至E线垂直距离(E line-UL)、下唇最凸点至E线垂直距离(E line-LL)、覆牙合(OB)、覆盖(OJ)均小于HGA组(P<0.05),矫治时间短于HGA组(P<0.05),总不良反应发生率与HGA组差异无统计学意义(P>0.05)。结论:对比HGA,MIA对安氏Ⅱ类1分类错牙合畸形患者的矫治效果更佳,且能够缩短矫治时间。

Objective To analyze and compare the correction effects of micro-implant anchorage(MIA)and headgear anchorage(HGA)on patients with ClassⅡdivision 1 malocclusion.Methods The clinical data of 95 patients with ClassⅡdivision 1 malocclusion in our hospital were collected.According to the treatment methods,the patients were divided into MIA group(46 cases)and HGA group(49 cases).The cephalometric measurement results and model measurement results,correction time and adverse reactions were compared before and after correction.Results After treatment,the angle of occlusal plane and SN plane(OP-SN),included angle of maxillary central incisor long axis and SN plane(U1-SN),upper lip protrusion(Ls-SnPg),lower lip protrusion(Li-SnPg),vertical distance from the most convex point of upper lip to E line(E line-UL),vertical distance from the most convex point of lower lip to E line(E line-LL),occlusion(OB)and coverage(OJ)in MIA group were smaller than those in HGA group(P<0.05),and the correction time was shorter than that in HGA group(P<0.05),and there was no signifi cant difference in the total incidence rate of adverse reactions compared with that in HGA group(P<0.05).Conclusion Compared with HGA,MIA has better correction effects on patients with ClassⅡdivision 1 malocclusion,and can shorten the correction time.