Assessment of TMJ morphology in different skeletal patterns in Egyptian children using CBCT

Introduction: The temporomandibular joint (TMJ) position is where the lower jaw meets the skull base. The joint and the surrounding muscles and ligaments collaborate to allow its movement. The correct alignment and functioning of the TMJ apparatus including the surrounding muscles and ligaments and position of the child’s teeth all contribute to the health of the TMJ. Assessment of TMJ morphology in different skeletal patterns in Egyptian children using CBCT.Materials and Methods: This study was carried out with CBCT images of 76 patients within the age group of 4-15years divided into three groups according to different skeletal patterns class I, class II and class III respectively. Images were analyzed for the condylar width and height and joint spaces variations.Results: The measurements showed that class II had significantly larger values of condylar width than other groups. There was significant difference in the condylar width and no significant differences in the condylar height and joint spaces. Class I skeletal pattern was having an increased anterior joint space while, class II had increased posterior joint space and reduced condylar width. Class III had reduced superior joint space and increased condylar height.Conclusion: Condylar width and height increase in Class III participants. In the joint spaces, anterior joint space was diminished and posterior joint space was amplified in class II individuals. Whereas, superior joint space was lessened in class III individuals.