【摘要】 目的:利用锥形束CT(CBCT)评估成人Angle Ⅰ与Angle Ⅱ2错畸形患者颞下颌关节的形态特征及与颞下颌关节窝的关系。方法:通过对30例Angle Ⅰ与30例Angle Ⅱ2类错畸形成人患者行TMJ的CBCT扫描,在GALILEOS工作站分析测量颞下颌关节窝间隙、髁突相关指标,进行统计学分析,比较Angle Ⅰ与Angle Ⅱ2TMJ形态学之间的差异。结果:①Angle Ⅰ、An-gle Ⅱ2类左右两侧髁突在各自颞下颌关节窝内的位置均无明显差异(P>0.05)。②Angle Ⅱ2组颞下颌关节窝深度、前间隙、上间隙均大于Angle Ⅰ组,后间隙小于Angle Ⅰ组(P<0.05)。结论:Angle Ⅰ与Angle Ⅱ2患者两侧髁突在颞下颌关节窝内位置对称,Angle Ⅱ2颞下颌关节窝深度,上间隙及前间隙比Angle Ⅰ大,后间隙比Angle Ⅰ小。更多还原

【Abstract】 Objective: To compare the anatomy and condyle-fossa relationship difference between adult patients with Angle Ⅰ malocclusion and those with Angle Ⅱ2 malocclusions by 3-dimensional cone-beam volumetric scans(CBCT).Methods: 30 patients with Angle Ⅰ malocclusion,and 30 with Angle Ⅱ2 malocclusion underwent CBCT examination.The images of temporomandibular joints obtained from fixed sagittal slices were used to assess the condyle-fossa relationship.The difference between Angle Ⅰ and Angle Ⅱ2 patients was analyzed by a paired-samples t-test,and an independent-sample t-test.Results: ①The position of condyle in the TMJ fossa was not significantly different between the 2 groups(P>0.05).②In Angle Ⅱ2 samples,the mandibular fossa depth,anterior joint space and the superior joint space were bigger,but the posterior joint space was smaller than those in Angle Ⅰ.Conclusion: The condyles in their mandibular fossae are symmitrical but the joint space is different in the 2 groups.更多还原