运用锥束CT对安氏Ⅱ类2分类错颞下颌关节位置的研究  

Study on temporal-mandibular joint position of Angle classⅡdivision 2 malocclusion by CBCT

作　　者：王瑜[1] 杜跃华[1] 秦朴[1] 

机构地区：[1]重庆医科大学附属口腔医院正畸科,400015

出　　处：《重庆医学》2014年第17期2119-2120,2123,共3页Chongqing medicine

基　　金：重庆市卫生局科研资助项目(2008-2-230);重庆市教育委员会科研基金资助项目(KJ120325)

摘　　要：目的运用锥束CT(CBCT)分析比较安氏Ⅱ类2分类错与个别正常关节位置的差异。方法选择符合试验设计的23例安氏Ⅱ类2分类错患者为试验组,27例个别正常为对照组。研究对象拍摄CBCT,使用Examvision软件在垂直于髁突长轴的斜位重建影像后,导入AutoCAD计算机软件进行关节间隙测量,测量髁突在关节窝中的位置,并对结果进行比较。结果安氏Ⅱ类2分类错患者中65.2%髁突后移位,个别正常中64.8%髁突处于中间位。结论安氏Ⅱ类2分类错患者相对于个别正常关节位置异常,应早期矫治,诱导关节到正常位置,避免产生关节症状。Objective To analyze and compare the difference of the joint position between the Angle classⅡ division 2 malocclu-sion and individual normal occlusion by dental cone beam computed tomography （CBCT）.Methods 23 patients with Angle classⅡdivision 2 malocclusion according with the experimental design were selected as the experimental group and 27 cases of individual normal occlusion as the control group.Each research subj ect was performed CBCT.The images in the oblique position perpendicular to the long axis of condyloid process were reconstructed by the Examvision software.Then the joint space was measured by the Au-toCAD software and and the positional relation of the condyloid process in the articular fossa was assessed by Pullinger analysis methods.The results were compared.Results 65.2% of the condylloid process in Angle classⅡ division 2 malocclusion is posteri-orly shifted,in individual normal occlusion,64.8% of the condylloid process is in the middle place.Conclusion The condylar posi-tion of Angle classⅡ division 2 malocclusion were abnormal relative to individual normal occlusion joint,which should be early cor-rected for inducing the joint to the normal position and avoiding the generation of the joint symptoms.

关 键 词：颞下颌关节 安氏Ⅱ类2分类错[牙合] 锥束CT 髁突位置 

分 类 号：R782.6[医药卫生—口腔医学]