I've recently been told about the possibility of having orthognathic surgery to correct an open bite (only my back left teeth meet). It would involve breaking both the top and bottom jaws and repositioning them to correct my bite. It would be benificial if it worked properly, but there is also a small chance of permenant numbness or tingling on parts of the lips and mouth because of nerve damage. I play tuba and tenor horn, and am worried about the effects that the operation would have on my playing if I decided to go ahead with it. Would it be like learning to play again with a new mouth shape, and is it even possible to play if small parts of your lips are numb? Is it possible to adapt? Any advice or experiences would be appreciated.