Would a sliding genioplasty be for me?

It is difficult to make a useful recommendation as you have presented no picture of your jawline appearance. Generally a sliding genioplasty is going to provide a better chin and neck change as it pulls the some of the neck muscles and an attachment of the tongue forward. (which helps lengthen the neck as well as the chin) This is particularly relevant in someone who is young and as a significantly short lower jaw. The issue of splints for your TMJ treatment has no impact on what you may or may not do for your chin aesthetics.

A sliding genioplasty can be considered when there is extensive issues with your teeth not fitting together properly. A sliding genioplasty is performed at a hospital and expect one to 2 days overnight stay in the hospital. A chin implant is performed for cosmetic purposes and is done under local anesthesia as an outpatient procedure. For many examples, please see the link below

Hi,Can you please provide some photos so we can better help you? A genioplasty will not influence your TMD and you can have it done at any time.Julian