Cosmetic Jaw surgery - Plastic surgeon or Maxillofacial?

it's not as important which type of surgeon you choose as the experience of that surgeon at doing the procedure that you need. There are many plastic surgeons and maxillofacial surgeons that perform orthognathic surgery. There  are also many who do not. It is critically important that you ascertain just how much experience you were surgeon has.  Ask to see previous case examples and speak to a patient of his or hers that has undergone the procedure. It is also of critical importance to choose a board-certified surgeon.  Having experience in both plastic surgery and maxillofacial surgery, in my opinion, maxillofacial surgeons perform these procedures more routinely than plastic surgeons. Best of luck!

If functional issues are significant and a concern, address
that first. Their correction should also be of aesthetic benefit. One who addresses these issues with
orthognathic procedures on a regular basis would seem most appropriate. Later,
residual aesthetic concerns can be addressed. This might be better in the realm
of a plastic surgeon.