Normally, mentoplasty (chin augmentation) is a very straightforward procedure without complication. Your photos, however, certainly suggest malposition of the chin implant, almost as if it were positioned along the underside of the jaw instead of on the surface of the chin.
It is possible this is due to surgical technique and not from inappropriate healing. I'd get a quick xray of the chin (implants are visible) and seek a second opinion just for completeness. If the 2nd doc concurs with the first, then you could return for the revision if you feel comfortable. The other option, of course, is removal of the implant altogether.
Good luck!




