Precision of Proximal Segment Repositioning Using Digitally Planned Custom Made guide in Sagittal Split Ramus Osteotomy

Background: Orthognathic surgery is widely used surgical procedure. The most common orthognathic procedure bilateral sagittal split osteotomy (BSSO) that for managing skeletal mandibular excess, deficiency or asymmetry. Objective: To correct functional and aesthetic problems. Patients Methods: A total of (12 patients) 24 condyles have been included in our study all with cl II malocclusion, open bites asymmetry, both genders males females, their age ranges between18 to 40 years, the cases had preoperative postoperative CT scans. Results: By comparing pre post operative scans regarding condylar positions groups. results revealed there was less movement head group device direction more favorable. Conclusion: This showed Digitally Planned Custom Made guide useful repositioning minimal operatively favorable movement. Keywords: surgery, condyles, CADCAM guides, ramus osteotomy, proximal segment