右侧偏侧咀嚼对颞下颌关节形态的影响

Effect of right chewing-side preference on morphological temporomandibular joint changes

目的:应用锥形束CT(cone-beam computed tomography,CBCT)探讨右侧偏侧咀嚼对颞下颌关节形态变化的影响。方法:利用CBCT对经过严格筛选的52例右侧偏侧咀嚼患者行正中位颞下颌关节成像后,分别获取轴位、冠状位、矢状位、平行于髁突长轴的斜位和垂直于髁突长轴的斜位重建影像并进行定量测量分析。采用SPSS12.0软件包对数据进行配对t检验。结果:右侧偏侧咀嚼患者习惯侧和非习惯侧在平行于髁突长轴的斜位60°和90°的关节间隙之间差异显著(P<0.05),习惯侧和非习惯侧在矢状位和垂直于髁突长轴的斜位120°、150°关节间隙和髁颈宽度之间差异显著(P<0.01),有统计学意义。其余测量值双侧差异无统计学意义。结论:右侧偏侧咀嚼对颞下颌关节形态产生一定的影响。

PURPOSE：To explore the effect of right chewing-side preference on temporomandibular joint with cone-beam computed tomography（CBCT）.METHODS：Fifty-two patients who were diagnosed as right chewing-side preference were selected and scanned by CBCT in the intercuspal position.The interested region was chosen to reconstruct and the images of bony structure of TMJ at axial view,coronal position,sagittal position,oblique position parallelled to the long axis of condyle and oblique position vertical to the long axis of condyle were evaluated.The data was analyzed with SPSS12.0 software package for paired t test.RESULTS：There was significant difference between the habitual and unhabitual sides of the joint space of 60° and 90° at oblique position parallelled to the long axis of condyle（P0.05）,as well as the joint space of 120° and 150° or the thickness of neck of condyle at sagittal position and the oblique position vertical to the long axis of condyle（P0.01）.No significant difference was found in the rest measuring values.CONCLUSION：The results indicate that right chewing-side preference affects the morphology of temporomandibular joint.