What surgical procedure offers similar postoperative outcomes in terms of stability compared to BSSO?

• A. Maxillary advancement
• B. IVRO combined with IMF
• C. LeFort I osteotomy
• D. TMJ arthroplasty

Answer: (B)

The correct choice is IVRO combined with IMF because this surgical procedure, which stands for Intraoral Vertical Ramus Osteotomy, focuses on advancing the mandible and can provide comparable stability to the Bilateral Sagittal Split Osteotomy (BSSO). Both BSSO and IVRO are designed to reposition the mandible, and when combined with Intermaxillary Fixation (IMF), there is a firm stabilization of the mandible during the initial healing phase. This minimizes the risk of relapse and improves overall postoperative stability.

In contrast, maxillary advancement primarily addresses the upper jaw and does not pertain to mandibular repositioning or stability in the same way that BSSO and IVRO do. Similarly, the LeFort I osteotomy is designed for maxillary repositioning and may not yield similar stabilization for the mandible itself after these procedures. Furthermore, TMJ arthroplasty is a surgical intervention focused on the temporomandibular joint, which does not impact the positioning and stability of the mandible in the same manner as the osteotomies mentioned. Thus, IVRO combined with IMF is the most comparable procedure to BSSO in terms of achieving stable postoperative outcomes for the mandible.