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目的 :探讨单侧有多种症状的颞下颌关节紊乱(temporomandibular disorders,TMD)患者双侧颞下颌关节(temporomandibular joint,TMJ)在锥形束CT(cone-beam computed tomography,CBCT)成像上可能存在差异的参考层面,为TMD诊断和对比研究提供参考。方法:选取仅一侧TMJ有多种症状的TMD患者(不含仅有一种症状的病例)50例,通过CBCT三维成像和重建,观察比较同一患者两侧TMJ重建后横断面的水平角;平行于髁突长轴的斜位关节间隙、髁突长轴径值、髁突垂直角;垂直于髁突长轴的斜位与矢状位的关节结节斜度、关节窝深度和关节间隙,采用SPSS13.0软件包对每例患者上述各测量指标进行两配对样本t检验。结果 :两侧TMJ在矢状位60°关节间隙时的测量值差异显著(P<0.05),平行位120°关节间隙、矢状位90°关节间隙时的测量值差异显著(P<0.01),其余测量值均无显著差异。结论:对于单侧有多种症状的TMD患者,矢状位或垂直位是较易观察到两侧关节有差异的位置,在这一层面重建意义较大。
OBJECTIVE: To investigate the clinical significance of temporomandibular joint (TMJ) in cone-beam computed tomography (CBCT) imaging in temporomandibular disorders (TMD) patients with unilateral multiple symptoms The reference level of difference provides a reference for the diagnosis and comparative study of TMD. Methods: Fifty patients with TMD who had only one symptom of TMJ without one symptom were enrolled in this study. Three-dimensional imaging and reconstruction of CBCT were performed to compare the horizontal angles of TMJ reconstruction on both sides of the same patient. The condylar long axis of the oblique joint space, the diameter of the condylar long axis, the vertical angle of the condyles; perpendicular to the long axis of the condylar sagittal and sagittal stenosis, joint depth and joint space, SPSS13.0 software package for each patient in the above-mentioned measurement of two paired samples t-test. Results: There was significant difference (P <0.05) between TMJ at the 60 ° joint space of sagittal plane and between the joint of 120 ° parallel plane and the joint space of sagittal 90 ° (P <0.01) , The other measurements were no significant difference. CONCLUSIONS: For patients with TMD with multiple symptoms on one side, the sagittal or vertical position is more likely to be observed with differences in the joints on both sides and is of greater significance at this level of reconstruction.