Before and Surgery for Underbite

Post-op photos were taken 3 years after surgery

The patient presented with the following complaints

  1. Flatness to the upper part of the face
  2. Protruding lower jaw
  3. Reverse overjet (lower incisors in front the upper incisors, underbite) with inability to bite with the front teeth

What did we do and how did we do it?

1. We carried out a Le Fort I osteotomy, forward sliding to bring the maxilla forward and fill up the upper part of the face.

2. We carried out a backward sliding Bilateral Sagittal Split Osteotomy of the mandible to take the protruding lower jaw back.

3. Moving the upper jaw forward and the lower jaw back as described in 1 and 2 above gave rise to a good occlusion with meeting of the incisors.


Before the surgery was done, the patient had braces placed (orthodontics) in order to position the teeth in the appropriate position so as to allow the optimal movement of his jaws. He was discussed jointly with the Orthodontist before commencing braces so that the optimal plan could be made as to the extraction pattern of teeth and brace work to be done.