AI Article Synopsis
- The study aimed to evaluate changes in the mandible's structure, specifically the condyle and inferior border defects, after a surgical procedure called sagittal split ramus osteotomy in patients with jaw deformities (class II and III).
- It involved analyzing medical imaging data from 72 female patients, noting significant relationships between preoperative measurements of the condyle and postoperative changes, especially in class II and class III cases.
- The findings indicate that while the reduction of the condyle after surgery is linked to its preoperative height, the inferior border defect is more related to specific surgical techniques used during the procedure.
Article Abstract
Objective: This study aimed to assess mandibular morphologic changes to the condyle, ramus, mandibular body, and inferior mandibular border defect after sagittal split ramus osteotomy in class II and III patients.
Study Design: The relationships among the condyle, ramus, and mandibular body measured by computed tomography preoperatively and postoperatively were assessed and factors related to the reduction of the condylar square and mandibular inferior border defect were examined.
Results: Patients included 72 female patients with jaw deformity (36 skeletal class II cases, 36 skeletal class III cases). Postoperative reduction of the condylar square was significantly correlated with preoperative condylar height in patients with class II (P = .0297) vs preoperative condylar height and preoperative mandibular height in patients with class III (P < .0001). A mandibular inferior border defect was found in 18 of 72 class II sides (25.0%) and was significantly related to the position of the osteotomy line and attachment side of the inferior border cortex (P < .0001).
Conclusions: This study's findings suggest that the postoperative reduction of the condyle could be associated with preoperative condylar height. However, the mandibular inferior border defect in class II advancement surgery could be independently associated with technical factors in sagittal split ramus osteotomy.
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| http://dx.doi.org/10.1016/j.oooo.2021.02.010 | DOI Listing |
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