Changes in the Condyle After Orthognathic Surgery in Class II and Class III Patients: A Retrospective Three-Dimensional Study

Authors : Servet Bozkurt, Hilal Yılancı, Kevser Kurt Demirsoy, Özlem Bozkurt

Pages : 87-96

View : 55 | Download : 36

Publication Date : 2025-04-28

Article Type : Research Paper

Abstract :Aim: Orthognathic surgery (OGS) may cause or exacerbate temporomandibular joint (TMJ) disorders and affect mandibular stability. The aim of this retrospective study is to evaluate the changes in the mandibular condyle and ramal angles as a result of mandibular and/or maxiller advancement/set back surgeries in patients with Class ll and Class lll malocclusions after OGS. Methods: Cone Beam Computed Tomography (CBCT) records which obtained 25 skeletal Class ll (6 males and 19 females mean ages=26.28 ± 5.89 y) and 25 skeletal Class lll (10 males and 15 females mean ages=23.32 ± 3.89 y) who had undergone OGS was selected. CBCT images were evaluated before surgery (T0) and 6 months after surgery (T1) using ITK Snap software to evaluate the measurement of the ramus. Changes of the condylar head were measured in axial, sagittal, and coronal sections. Results: After OGS the axial ramal angle decreased significantly in both Class ll (4.24°±4.68) and Class III (1.52°±3.1) groups (p<.05). Condylar length in the sagittal dimension decreased significantly (p<.05) also in both groups (Cl II= 0.68 mm, Cl III= 0.13 mm). As a result of our study, it was found that resorption occurred in the condylar length and mandibular the proximal segment rotated laterally after OGS. Conclusion: It would be appropriate to evaluate Class II and Class III patients who are planned to undergo OGS in terms of TMJ dysfunction before and after surgery.
Keywords : Ortognatik cerrahi, Temporomandibular eklem, Cone-beam bilgisayarlı tomografi

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