![]() After final study selection, the quality of studies was assessed using the AMSTAR 2 tool. Article preselection was based on titles and abstracts, and final article selection based on full-text analysis of preselected studies. The purpose of this systematic review of systematic reviews was to assess the impact of mandibular advancement or bimaxillary surgeries on condylar resorption.Ī literature search, using several electronic databases, was carried out by two reviewers independently. Several systematic reviews have been published on the effects of mandibular surgery on condylar remodeling without reaching a consensus. The BSSO is accompanied by higher risks of developing complications like a bad split and sensory disorders but, however, remains the standard for large anterior–posterior transpositions of the mandible. The HOO presents a possible alternative to the BSSO since newly developed osteosynthesis material significantly reduces the risk of material failure. More bad splits ( p = 0.08) and early sensory disorders ( p = 0.07) occurred in the BSSO group. The use of a ramus plate significantly reduced the risk of plate failure (2.8% < 13.6%, p = 0.05). Significant differences were found regarding the operation time (HOO BSSO, p = 0.04), and early recurrence requiring revision surgery (HOO < BSSO, p = 0.002). The overall complication rates were 19.78% (BSSO) compared to 12.5% (HOO) ( p = 0.14). Two hundred ninety-one patients were included. The electronic medical records of all patients treated with an orthognathic surgery at the Department for Oral, Maxillofacial and Facial Plastic Surgery, University Hospital Frankfurt, Germany, between the years 20 were retrospectively reviewed. To retrospectively compare the high-angled sagittal split osteotomy (HOO) and the bilateral sagittal split osteotomy (BSSO) for the correction of skeletal dysgnathias regarding intra- and postoperative complications. Significant changes in the joint space, condylar position, and condyle angle were found in the class II and class III subjects. In 42.85% of malocclusion class II patients and 57.14% of malocclusion class III patients, the pre-and post-surgical position of the condyle changed, the condyle was anteriorly positioned (42.85%) in class II patients and centrically positioned (71.4%) in class III patients. Postoperatively, the anterior joint space in class III decreased. Following orthognathic surgery, the anterior and posterior space in class II increased. A total of 56 TMJs from 28 patients were studied. ![]() ![]() The position of the condyle within the glenoid fossa was determined before and after surgery. In the coronal plane, the smallest medial joint space was measured. In the sagittal plane, the minimum size of the anterior and posterior joint spaces was measured. Both condyles were independently assessed for their largest anterior and posterior joint spaces, smallest medial joint spaces, and condyle angles concerning the transverse line. CBCT scans from patients who underwent bimaxillary orthognathic surgery were analyzed: Le Fort I osteotomy and bilateral sagittal split osteotomy (BSSO). This study aimed at evaluating the mandibular condyle position changes before and after bimaxillary orthognathic surgery in class II and III malocclusion patients.
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