锥形束CT在夜磨牙患者颞下颌关节中的测量价值  

Analysis of cone beam CT for the skeletal structure of temporomandibular joint in patients with sleep bruxism

作　　者：李佳[1,2] 张娟[1] 李泽奎[1] 高平[1] 

机构地区：[1]天津医科大学口腔医院,300070 [2]天津市河西医院

出　　处：《天津医药》2016年第4期490-493,共4页Tianjin Medical Journal

摘　　要：目的应用锥形束CT(CBCT)分析夜磨牙患者颞下颌关节(TMJ)的骨性结构特征。方法 30例夜磨牙患者(夜磨牙组)和30例健康成年人(对照组)均在牙尖交错位进行CBCT扫描,使用Invivo5软件对2组左、右侧分别进行TMJ重建影像和如下相关项目测量。(1)轴位测量。主要有髁状突前后径、髁状突内外径、髁状突水平角。(2)矢状位测量。主要有关节窝深度、关节结节斜度及关节上前后间隙。(3)冠状位测量。髁状突受力角。结果夜磨牙组和对照组组内左、右侧TMJ各测量值均无统计学意义(P>0.05)。夜磨牙组与对照组在前后径、内外径、关节窝深度、前间隙和受力角之间差异有统计学意义(P<0.05)。与对照组比较,夜磨牙组髁状突的前后径、内外径减小,前间隙、关节窝深度、受力角增大,其余TMJ测量值无明显差异。结论夜磨牙患者双侧TMJ骨性结构基本对称;髁突在关节窝位置无明显改变,髁突前斜面吸收,髁突有变小的趋势。Objective To analyze the skeletal structure features of temporomandibular joint（TMJ） by using cone beamcomputed tomography（CBCT） in patients with sleep bruxism. Methods CBCT scanning was performed in the intercuspalposition in 30 patients with sleep bruxism（sleep bruxism group） and 30 health adults（normal group）. The reconstruction ofTMJ images were analysed by Invivo5 software. Measurements of horizontal section include antero-posterior diameter, medial-lateral diameter and axial angel. Measurements of sagittal section include acetabulum depth, aricular eminence inclination,anterior space, superior space and posterior space. Measurements of coronal section include force angle. Results There were no significant differences in both sides of TMJ between sleep bruxism group and normal group（P 0.05）. Comparedwith control group, there were significant differences in antero- posterior diameter, medial- lateral diameter, acetabulumdepth, anterior space and force angle in sleep bruxism group（P 0.05）. There were decreased antero posterior diameter, me-dial-lateral diameter and increased acetabulum depth, anterior space and force angle in sleep bruxism group than those ofcontrol group. Conclusion The bilateral bone stuctures of TMJ are basically symmetry in patients with sleep bruxism.There is no significant change in condylar position in acetabulum, but there is a trend of absorbtion of anterior space and de-crease of condyle in patients with sleep bruxism.

关 键 词：诊断显像 图像处理 计算机辅助 夜磨牙症 颞下颌关节 锥形束CT 

分 类 号：R782.6[医药卫生—口腔医学] R814.42[医药卫生—临床医学]