替牙晚期骨性Ⅲ类错矫治对颞下颌关节影响的研究  

Effects of orthodontic treatment on temporomandibular joint of patients with mixed dentition and skeletal class Ⅲ malocclusion

作　　者：敖同江[1] 袁小平[2] 杨四维[2] 黄跃[2] 

机构地区：[1]内江市第一人民医院口腔正畸科,641000 [2]泸州医学院附属口腔医院正畸科

出　　处：《实用口腔医学杂志》2011年第6期828-831,共4页Journal of Practical Stomatology

基　　金：四川省卫生厅科研课题基金资助项目(编号:060050)

摘　　要：目的:探讨替牙晚期骨性III类错矫治对颞下颌关节的影响。方法:选择替牙晚期骨性Ⅲ类错患者32例,施行前方牵引联合直丝弓矫治技术,矫治前后均做Helkimo主诉症状指数分析和头影测量分析。结果:矫治后患者Helkimo指数分布发生了明显改变,Ai 0级比例明显升高,AiⅡ级比例减少为零。矫治后Co-y距、Y轴角、ANB角等明显增大(P<0.05);Co-x距、SNB角、NP-FH角等明显减小(P<0.05);且N-S-Ar角、N-S-Go角、N-S-Pg角变化值为依次增加。结论:替牙晚期骨性Ⅲ类错矫治对患者Helkimo主诉症状有改善作用。矫治后髁突点发生了向后上的位移,下颌生长受到抑制,下颌的位置相对后移,以髁突为中心发生了顺时针旋转。Objective： To evaluate the effects of orthodontic treatment on temporomandibular joint of patients with mixed dentition and skeletal Class Ⅲ malocclusion.Methods： 32 patients with skeletal Class Ⅲ malocclusions and mixed dentition were enrolled.The patients were treated with maxillary protraction and straight wire technique.Helkimo index evaluation was conducted,lateral cephalometric films were taken and linear measurements were performed individually before and after treatment.Results： After treatment,Helkimo indexes in all patients redistributed.Ai 0 level ratio was significantly increased,Ai Ⅱ grade reduced to the proportion of zero.Co-y,Y axial and ANB were increased（P〈0.05）.Co-x,SNB,NP-FH decreased（P〈0.05）,N-S-Ar,N-S-Go and N-S-Pg increased（P〈0.05 or P〈0.01）.Conclusion： Orthodontic theray is effective in the treatment of class Ⅲ malocclusion with mix dentition.

关 键 词：骨性Ⅲ类错 正畸治疗 颞下颌关节 头影测量 

分 类 号：R783.5[医药卫生—口腔医学]