What will fix my masseter permanently after a jaw implant so that the gonial give me a more angular face?

Hello, thank you for your question. It is hard to give a recommendation without proper photos and an in-person examination. Follow up with your board certified plastic surgeon.

I recommend first returning to your surgeon to discuss your concerns.  It is important to evaluate if you are healing correctly, or if the appearance that concerns you needs to be addressed surgically.  Botox and fillers can be helpful in addressing asymmetry, however the results will not be permanent.

The photograph you submitted does not say anything as to what it is that you may need because it looks as if you are clenching your teeth. You need to submit photographs at rest of the front, oblique and profile views for an evaluation or come in for an evaluation in person. I always recommend a plastic surgeon's evaluation in person because it is the most accurate one. Using fat grafting, radiesse, or even Restylane Lyft will work well in order to enhance the mandibular angle and the jaw line. I hope this helps and good luck from New York City plastic surgery