Moustafa Mohamed Elshahawy  <br/><br/>
Stability of vertical subsigmoid osteotomy versus sagittal split osteotomy in mandibular prognathism :   randomized clinical trial /  
 ثبات عظام الفك السفلى بعد عملة الشق تحت السنى مقارنة بالشق السھمى التصاعدى فى علاج بروز الفك السفلى 
Moustafa Mohamed Elshahawy ; Supervised Ibrahim Abdullah Mohamed , Mostafa Ibrahim Shindy   
 - Cairo :   Moustafa Mohamed Elshahawy ,   2019 
 - 116 P. :   charts , facsimiles ;   25cm  
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicine- Department of Oral and Maxillofacial Surgery  
<br/><br/> This study evaluated the postoperative stability following intraoral vertical subsigmoid osteotomy (IVSO) and bilateral sagittal splitting ramus osteotomy (BSSO) in skeletal Class III patients. The subjects were skeletal Class III patients without asymmetry divided into two equal groups, six patients in each group, where the operative method (IVSO or BSSO) applied to bilateral site for mandibular setback, lateral cepahalometric radiographs were taken at three times intervals, (T0) immediately before surgery, (T1) immediate after surgery, and (T2) 6 months after surgery. There was no statistically significance in skeletal stability in both groups in vertical and horizontal planes. However, the neurosensory deficit was significant in BSSO group 
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<br/><br/><label>Subjects--Index Terms: </label>Bilateral sagittal split osteotomy  Vertical ramus osteotomy  Vertical subsigmoid osteotomy