Mandibular Setback

Mandibular setback moves the lower jaw backwards, usually via BSSO or an intraoral vertical ramus osteotomy, to correct prognathism. Airway effects must be carefully considered, and many surgeons prefer combining a smaller setback with maxillary advancement.

• Lower jaw projection
• Profile balance
• Bite relationship

• 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. 01BSSO or IVRO setback
2. 02Rigid fixation or, for IVRO, a period of intermaxillary fixation

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.