Chin Implant Vs Sliding Genioplasty

I'd like my chin/jaw to look stronger. It sounds like there are two possible solutions:

  1. Implant: This would add more projection, but not height. Some implants extend along the jaw (Mittelman prejowl chin implant). Would this improve the chin/jaw's strength without lengthening the chin's vertical height?
  2. Sliding Genioplasty: This would involve cutting the chin bone and repositioning it. This could be used add vertical height to the chin, but I wonder if additional height is even necessary to achieve my goal of a stronger chin and jaw.

When is it preferable to choose an implant over sliding genioplasty?

Doctor Answers 13

The Choice of Chin Implants vs Chin Osteotomies Depends On The Problem

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While chin implants are by far the most common method of chin augmentation, they are not ideal for absolutely everyone. Large chin deficiencies as well as vertical chin problems may be better treated by moving the chin bone to a better position. When horizontal chin deficiences are greater than 10mms (as determined by a side view picture), then one needs to carefully consider the osteotomy option. Off-the-shelf chin implants do not usually give more than 10mm of projection. When the chin is vertically short and needs to be lengthened or when it is too long and needs to be shortened, an osteotomy is the only treatment option.

Chin Implant Vs Sliding Genioplasty

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Sometimes either is fine, but many times there are significant differences in results. You are 'right on the money' about vertical height being one of the important differentiators. I use a simple facial analysis to determine whether vertical height is optimal (and this has been published in different forms by myself and my colleague and mentor, Dr. Steve Byrd. I take a ruler and measure mid face height, lower face height, nasal length, chin vertical, nasal projection and chin projection. Lower facial height should be equal to or up to 3mm greater than mid face height. Chin vertical, as measured from where the lips meet to the bottom of the soft tissue chin should be equal to nasal length. The whole measurement process takes less than 30 seconds. Some under projecting chins are too long and this results in "mentalis strain" - dimpling of the chin and difficulty in closing the lips. The vertical height can be corrected along with the projection deficiency using a sliding genioplasty. Decreased vertical length, which tends to make the nose look longer than it is, and can lead to an appearance of lower facial weakness, can also be corrected nicely with a sliding genioplasty. Many surgeons are not comfortable doing genioplasties and don't offer them. It really is a very straight forward operation, should take about as long as placing a chin implant, and is done through a hidden incision inside the mouth.

P. Craig Hobar, MD
Dallas Plastic Surgeon
4.8 out of 5 stars 24 reviews

Sliding Genioplasty: Safe, Effective, Easy Procedure

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As a craniofacial surgeon (one who is board certified in plastic surgery and fellowship-trained in craniofacial surgery), I have performed numerous sliding genioplasties as well as implant procedures to strengthen the chin. Both procedures are very straight forward, take about the same amount of time to perform, and can be effective in most cases.  However, there are multiple benefits to performing a genioplasty in which the chin is cut and the bone is advanced and then secured in position with a small titanium plate.  There is no risk of implant infection when performing a genioplasty in which your own bone is used to achieve the augmentation. Chin implants are also prone to shifting position resulting in post-op asymmetry; this doesn't occur with a sliding genioplasty as the bone is secured in place.  Both procedures can be performed through a similar intra-oral incision.  Placing the implant through this approach increases the chance of infection. Placing it through an external incision on the chin to reduce the chance of infection produces a visible scar. As every patient is different, be sure to review the details of each procedure carefully with your surgeon to make the best choice for yourself.

Chin implant versus sliding genioplasty

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Both a chin implant and a sliding genioplasty can be very effective for augmentation. However, only a sliding genioplasty can recess a chin, lengthen the chin, as well as correct an assymetry.

Jose E. Barrera, MD, FACS
San Antonio Facial Plastic Surgeon
4.9 out of 5 stars 56 reviews

Chin implant versus sliding genioplasty

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Chin implant versus sliding genioplasty is a big decision. A chin implant is inserted for cosmetic purposes up to about 8 or 9 mm of anterior projection. Chin implants to give a few millimeters of added height and width, since the implant is three-dimensional. Chin implants are placed through a sub mental  incision under local anesthesia as an outpatient procedure.
A sliding genioplasty is performed under general anesthesia and usually requires an in-hospital stay for 24-48 hours after the procedure. It's best to perform this procedure when the teeth are significantly out of alignment and  there is a significant bony deficiency present, and more than 10 mm of augmentation is required.  

William Portuese, MD
Seattle Facial Plastic Surgeon
4.8 out of 5 stars 157 reviews

Chin implant options

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The simplest explanation is that sliding genioplasty is used most often for assymetries of bone while an implant is best used when their is symmetry of sides.  Many genioplasties are performed in the setting of a normal chin enhancement.

Raffy Karamanoukian, MD, FACS
Los Angeles Plastic Surgeon
4.8 out of 5 stars 95 reviews

Chin Implant Almost Certainly A Better Option

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Chin augmentation can be done by either adding an artificial material (chin implant) or by moving your own bone forward (sliding genioplasty).  A sliding genioplasty is a much more complex operation, requires a larger incision, has a higher rate of complication, is far more dificult to undo, has a longer healing time, and puts your teeth and nerves at greater risk.  In addition, there are dozens of chin implant shapes and sizes to pick from compared to very limited options with a sliding genioplasty. 

I use silastic chin implants which I insert via a 1/2 inch incision either inside your mouth or under your chin (you choose).  Silastic is a material which has been used for this purpose for decades and is known to be safe.  Their is usually no bruising, minimal pain, mild swelling, and very rare complication.  The operation can easily be done under local anesthesia, if you like, allowing you to drive home.  It takes about 30 minutes total and if you choose to be awake you can even inspect your appearance with several sizes before finalizing things.

We do know that chin implants tend to put a dent in the bone after a while.  This is not a problem unless you decide to remove or change out the implant at a later time.  If you change your mind about an implant (either just don't like it at all or want a different size), it very easy to switch for the first several months.  Later than that and the operation gets more difficult becuase of the ridge in the bone, but it still can be done.

Louis W. Apostolakis, MD
Austin Facial Plastic Surgeon
4.8 out of 5 stars 36 reviews

Chin Implants Are Much Much Safer`

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Chin augmentation using extended implants are a much better alternative for 95% of the patients we see requesting a stronger chin. Within 7-10 days most of our patients can return to any social situation. Pain is minimal and complications rare. In fact the procedure is done under IV sedation and takes less than 15 minutes to perform while the sliding genioplasty is much more costly, has a much higher incidence of problems, and a longer post-op course. This one should be a "no brainer"!

S. Randolph Waldman, MD
Lexington Facial Plastic Surgeon
4.6 out of 5 stars 19 reviews

Genioplasty or chin implant

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The use of chin implants can be successful but they have limitations. Implants do not alter the chin 3 dimensionally and they can cause bone loss under the implant as the implant 'sinks' into the bone. Shifting of the implants is another issue. However, they are simple to place and technically most surgeons have experience with them. 

Genioplasties are a more 'natural' approach since it shifts the actual chin and does not alter the underlying contour of the front part of the chin. Also, there is a muscle attached to the back of the chin segment which moves forward; and that allows a flattening of the 'under chin area' in a positive manner. Certainly, the technical expertise is greater with genioplasties, but the overall 3 dimensional control of the chin is superior.

Gerald Wittenberg, MSc, DMD
Vancouver Oral & Maxillofacial Surgeon
5.0 out of 5 stars 29 reviews

Chin implant or sliding genioplasty

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The choice between a  chin implant or a sliding genioplasty depends on the individual patient's's anatomy.  Most patients would be better served with a well planned and executed Chin implant augmentation.  Sliding genioplasty has a higher complication profile, and should be reserved for the patients that can not be helped with chin implant surgery alone.  A well trained and experienced surgeon should be able to guild you in your choice.

Boris M. Ackerman, MD
Newport Beach Plastic Surgeon
4.8 out of 5 stars 62 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.