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Narrowing The Width Of The Chin By Osteotomy

Changes in the chin are traditionally perceived as the need for a horizontal increase or improved anterior projection. While many chin deficient patients need horizontal augmentation, there are other dimensions in which the chin may need to be changed. Vertical lengthening or shortening is the other most recognized alteration that can be done to the chin.

The least recognized and often overlooked chin change is in its width or transverse dimension. Increasing the width of the chin is done in male chin augmentation, usually using an implant to get a more square or wider masculine appearance. Narrowing the chin, however, can obviously not be done with an implant. Like vertical chin shortening, only a chin osteotomy can reliably make that change.

Burring of the sides of the chin from an intraoral approach can make for a more narrow or pointed chin but it has limits as to what can be achieved. This is best thought of some mild chin contouring. There is also the issue of extensive soft tissue release with a burring technique and there is no guarantee of good soft tissue readaptation afterwards. This is why a chin osteotomy may be preferred when a significant narrowing effect is aesthetically desired.

The chin osteotomy is done with a traditional intraoral vestibular incision. Once downfractured with an osteotomy cut below the mental foramen, the mobilized chin segment is brought forward for exposure. The amount of chin narrowing is then marked in the midline and bilateral sagittal osteotomies are made. A central bone segment is then removed based on the desired amount of chin narrowing. General 5mm to 7mms needs to be removed to make a visible external difference. The chin segments are then brought together and plated on their superior surface to hold them together. Plating superiorly is important so that the anterior surface is still available for plate fixation for an advancement or vertical lengthening which may still be done.

With a narrowing chin osteotomy, it is important to look for any palpable edges above or out laterally which may need to be burred to prevent any notching that can be felt through the skin. Good mentalis muscle resuspension/tightening is needed once the chin bone is stabilized even though the soft tissue has not been released from the inferior border of the mandible and chin.

While a chin osteotomy is needed when a significant narrowing effect is needed, there are other considerations for its use as well. Certain chin shapes when advanced by osteotomy may be still too wide in the frontal view. This can be seen with certain women’s chins. Changing the chin to one with less width can be aesthetically advantageous as it comes forward, resulting in more of a u-shape and creating the perception of some flare to the jaw angles as well.

Dr. Barry Eppley

Indianapolis, Indiana

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Dr. Barry EppleyDr. Barry Eppley

Dr. Barry Eppley is an extensively trained plastic and cosmetic surgeon with more than 20 years of surgical experience. He is both a licensed physician and dentist as well as double board-certified in both Plastic and Reconstructive Surgery and Oral and Maxillofacial Surgery. This training allows him to perform the most complex surgical procedures from cosmetic changes to the face and body to craniofacial surgery. Dr. Eppley has made extensive contributions to plastic surgery starting with the development of several advanced surgical techniques. He is a revered author, lecturer and educator in the field of plastic and cosmetic surgery.

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