I had a chin implant surgery about 6 years ago. For the first 3 years, there was no sign of drooping; however, I now have a droop on the right side, most pronounced around the bottom eye tooth, which has been gradual. I feel like it's getting worse every year (my husband agrees). I have numbness and look like a different person. It is noticeable when I talk and smile. Could there any way to fix this, or is this permanent nerve damage?