CBCT对错牙合病人颞下颌关节形态结构的研究

Study on temporomandibular joint morphology of malocclusion with CBCT

目的探讨错[牙合]畸形对颞下颌关节形态结构的影响。方法选择各类错[牙合]畸形患者90例,拍摄CBCT影像,应用Dolphin软件重建并测量髁突长轴、短轴、关节结节斜度、髁突长度、关节窝高度和宽度以及关节前、中、后间隙,进行统计分析。结果安氏Ⅰ类、Ⅱ1类和Ⅲ类患者彼此之间的多项关节测量指标存在统计学差异。结论①不同类型的错[牙合]畸形颞下颌关节形态结构存在差异;②CBCT结合Dolphin软件可作为临床研究颞下颌关节的有效手段。

Objective To investigate the effect of malocclusion on TMJ morphology. Methods The study sample comprised DICOM files of 90 patients taken by CBCT. 3 D images parameters including condyle long and short axis, articular tubercle gradient, condyle length glenoid fossa height and width, the anterior, superior and posterior joint space were reconstructed and measured with Dolphin 11.5,then data was analyzed by SPSS. Results There were statistically significant differences among TMJ indexes of different malocculusion(P<0.05). Conclusion CBCT is an effective way to estimate TMJ,and there are differences on TMJ morphology among the various malocclusions.