Genioplasty is a procedure used to improve the appearance of a persons chin. This can take the form of chin height reduction, rounding or augmentation using osteotomy (cutting the bone) or implants.
A sliding genioplasty, involves mobilizing a horseshoe-shaped piece of the bottom part of the chin bone by osteotomy and sliding it either backwards or forwards, finally fixing it in place with two or three little titanium screws. The teeth are not moved in this operation (that is called a sagittal osteotomy of the mandible), which we can do as well, but this is a procedure intended to realign the upper and lower teeth.
This procedure is performed through an intra-oral incision. The bony piece is cut and then moved forward and secured with screws. Placement of a bone graft is also an option, although we usually only do that for reconstructive cases. Do know that you will be able to feel some slight dents both underneath the jaw and in the front part of the new “chin” — where it was slid forward. However, tissue will cover your new chin and look very natural. There are no visisble scars.
Genioplasty has more of an incidence of nerve damage (especially the inferior alveolar and mental/menton nerves) than chin augmentation via alloplastic implants. It is the most difficult or time-consuming for the surgeon to perform and has more down time, but less risks in the long run. The advancement can be very slight or more dramatic, depending upon your needs.
The results can appear very natural when performed correctly. The results may be comparable to a chin implant. The choice of an implant or bone advancement is up to the patient and neither one is risk free.
This is a picture of an osteotomy of the mandibula (lower jaw ) + a sliding genioplasty.
The mandibula bone cut will realign the teeth, whereas the chin work only has a cosmetic effect.
Both procedures may be combined or done separately.