I have a weak chin that I would like to get augmented with a sliding genioplasty however I do have an underbite. Is it possible to get this kind of surgery without having to correct the malocclusion? I just want the chin augmented soley for cosmetic reasons and I fully understand the procedure will not change my bite. I am also aware there is a surgery available to correct the underbite. I want a sliding genioplasty to add length and height to my weak chin. Thanks in advance.