Chin augmentation can strengthen the appearance of a receding chin by increasing its projection. (Look at pictures of Michael Jackson when he was young, then look at a recent picture; it’s hard to ignore his mega-chin implant.) The procedure does not affect the patient’s bite or jaw, and can be done using one of two techniques. One approach is to make an incision inside the mouth, move the chin bone, and then wire it into position; the other requires the insertion of an implant through an incision inside the mouth, between the lower lip and the gum, or through an external incision underneath the chin. Hydroxyapatite granules, a bone substitute made from coral, can also be used to enhance facial contours, such as forming a more prominent chin or cheekbones. The substance also has reconstructive uses in craniofacial surgery.
From another perspective, even if the shape of the chin may not be an issue, with aging excess skin can start pouching along the jawline, creating the appearance of a double chin or a turkey neck. Having liposuction to remove the excess fat and then a chin tuck to shore up the sagging skin is one way to address this issue. You and your surgeon can also decide if reshaping a too-narrow chin should be part of the effort.
(Source: Facial Plastic Surgery Clinics of North America, February 2008, pages 79-85.)