Mandibular Advancement (BSSO)

In BSSO advancement the mandibular body is split sagittally and the tooth-bearing segment moved forward, improving the bite, chin projection, and often the posterior airway. It is one of the most common orthognathic operations.

• Chin and jawline projection
• Submental/neck definition
• Bite relationship
• Posterior airway space

• General physical health suitable for the anaesthetic required
• Realistic, clearly articulated aesthetic or functional goals
• Stable anatomy appropriate for the technique proposed
• Non-smoking or willingness to stop for the surgeon's required window

1. 01Intraoral incision along the external oblique ridge
2. 02Sagittal split and controlled advancement
3. 03Bicortical screws or plates

1. Day 1

   Immediate post-operative period. Swelling begins, dressings or splints may be in place, supervised rest.

2. Week 1

   Peak swelling and bruising. Limited activity, soft diet where relevant, first follow-up visit.

3. Week 2

   Bruising fades. Many people feel socially presentable, light activity resumes.

4. Week 4

   Most acute swelling resolves. Gradual return to exercise as cleared by the surgeon.

5. Month 3

   Contours become clearer. Residual swelling continues to settle.

6. Month 6

   Result is largely representative of the final outcome.

7. Month 12+

   Final refinement, scar maturation, and revision assessment if needed.