Orthognathic surgery is a surgical procedure performed to correct dentofacial deformities. In recent years, with the use of virtual surgical planning, cutting guides, and patient-specific osteosynthesis plates, highly predictable results can be achieved. While there are many positive reports regarding the use of patient-specific plates in maxillary positioning in orthognathic surgery, there is a lack of sufficient studies comparing the results obtained in mandibular positioning. Additionally, numerous designs of proximal segment positioning devices have been published, but comparative studies on their effectiveness have not been conducted. Therefore, a study comparing these approaches has been planned.
Healthy individuals over 18 years of age
Patients with skeletal Class 2 and Class 3 malocclusion requiring bimaxillary orthognathic surgery
Patients who have undergone orthodontic treatment prior to surgery
Patients with cleft lip and palate or craniofacial deformities
Oligodontia
Patients in whom the study protocol could not be continued due to intraoperative complications such as guide mismatch or bad split, or due to reasons such as inability to obtain postoperative CT scans
Patients with pre-existing temporomandibular joint disorders prior to surgery