I have seen buccal and infraorbital used somewhat interchangeably (probably improperly, but what do I know). By "dead", I mean it is very asymetric. My whole face pulls to the left when I talk. When I purse my lips, the left side of my upper lip purses while the right side lies flat. I can smile symmetrically and I can pull the lip up symetrically on both sides. So perhaps it is the branch of the nerve that activates the obicularis oris muscle? I am completely guessing. My question is: did anyone have one-sided damage in this area of the face after having both jaws done (might be related to swelling,trauma during surgery, sutures)? Did you eventually recover? What did you do that helped recovery? I had a ton of BMP used and my reaction was very poor. I had extreme swelling (my doctor asked for a photo of me at day 5 to show other patients what "might" happen), and despite being religious about exercising, I can open my mouth very little after over 6 weeks - about 1/2 inch. I am feeling pretty despondent even though everything I read says that this area is highly regenerative. I did not anticipate this complication and it is unnerving to hear a famous surgeon say that they have never had this complication before.