I did it to replace a 10 year old implant that I had never been happy with. It was too big for my face and uneven. I was having a revision rhinoplasty done to remove a mysterious growth on the bridge of my nose, so I decided while I was having that done, that I might as well have the chin implant replaced at the same time.7 days ago I had a 10 year old chin implant removed because it was too big and asymetical. Now I'm worried because the middle section of my bottom lip (which isn't numb compared to the rest of my jaw) doesn't move down when I smile or talk. As a result, I now have a lisp and look like I don't have any bottom teeth when I smile. Is this nerve damage or muscle damage and is it permanent?