الفهرس 
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Abstract
This study aimed to investigate the difference in TMJ morphology in different divisions of Class II adult patients using CBCT.
Forty eight CBCT radiographs were collected and divided into 2 groups. group 1 Class II division 1 and group 2 Class II division 2 according to the cephalometric images extracted from Dolphin software and the cephalometric analysis using Webceph website. The CBCT measurements of the TMJ were done using ProPlan 3.0 CMF software, the following spaces were measured in the sagittal plane; Anterior joint space, superior joint space, posterior joint space and depth of glenoid fossa. Moreover, anteroposterior width of the condyles, mediolateral width of the condyle, lateriomedial plane angle of the condyle, axial condylar angle, distance from the center of the condylar process to the midsagittal plane and anteroposterior differences of condylar processes were measured in the axial plane for all the radiographs.
Results of the current study showed that there were no statistically significant differences between the right and left sides in each group regarding the anterior joint space, superior joint space, posterior joint space and depth of glenoid fossa associated with sagittal plane. In addition, there were no statistically significant differences between the groups regarding the anterior joint space, superior joint space, posterior joint space and depth of glenoid fossa associated with sagittal plane.
Based on these results, it could be concluded that:
1. Malocclusion can be considered to be either a cause or a consequence of the variations in temporomandibular joint disorders.
2. Temporomandibular joint morphology did not differ between Class II division 1 and Class II division 2.