If they have a bite problem that they also wish corrected, they may benefit from a large operation in which the jaw bone is divided and slid forward. Patients with only a cosmetic concern, may be easily treated by a chin implant. BUT they must rest on the bone. A chin implant will not push out the lower lip. Feel the gutter behind your lower lip.
Extended implants are available that can enhance the jaw line, somewhat.
They do not replace a facelift. The chin needs to be in harmony with the face and once again the question tends to be too much or too little. There are two main categories of surgeries that are done for the chin, depending on whether the person has a bite problem or not. If it is simply a cosmetic problem, a chin implant or reduction can work adequately. In the process of repairing the dental alignment, the chin will be rotated into the proper position as well.