I Have a Weak Chin - Do I Need a Chin Implant or Jaw Surgery?

It is possible to fix both your chin projection and tooth allignment in one surgery. This would involve orthognathic surgery. It's usually performed by either an oral surgeon or craniofacial surgeon. You should ask your dentist who he or she would recommend.

Chin implants or sliding genioplasty alone can help with your chin appearance but wouldn't do anything to change how your teeth come together.

A chin implant will improve your profile but will not fix your bite. I agree with Dr. Beraka that jaw surgery is a major procedure. However, this is what is necessary to both fix your bite and improve the appearance of your chin. These procedures are typically performed by Oral Maxillofacial Surgeons. The advantage of undergoing the larger jaw procedure, as opposed to just a chin implant, is that this should repair your occlusion (bite) and this will lead to better long term dental health as well as improving your appearance. However, you should balance this against the increased downtime following the procedure.
Best,Stephen Weber MD, FACS