Bimaxillary Surgery

Bimaxillary (double-jaw) surgery combines a Le Fort I with a bilateral sagittal split osteotomy of the mandible. Moving both jaws together allows counter-clockwise rotation, airway expansion, and larger skeletal changes than either operation alone.

• Projection of both jaws
• Occlusal plane angle and facial rotation
• Chin projection (indirectly)
• Posterior airway space
• Lower facial height

• 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. 01Virtual surgical planning from CBCT and dental scans
2. 02Le Fort I osteotomy plus bilateral sagittal split osteotomy
3. 03Patient-specific guides or splints, rigid internal fixation
4. 04Genioplasty frequently performed at the same sitting

1. Day 1

   1–2 nights in hospital, marked swelling, elastics, liquid diet.

2. Week 1

   Peak swelling and stiffness. Liquid diet, jaw physiotherapy may begin.

3. Week 2

   Swelling declining; many return to remote work.

4. Week 4

   Soft diet, gentle exercise, most social swelling gone.

5. Month 3

   Bony healing consolidated; orthodontic detailing continues.

6. Month 6

   Facial shape near-final, sensation continues to recover.

7. Month 12+

   Stability, sensation, and occlusion assessed; airway benefits evaluated.