A sliding genioplasty is a surgical procedure that reshapes the chin by cutting the chin bone and repositioning it. Unlike chin implants, which place a synthetic material on top of existing bone, a sliding genioplasty moves your own bone forward, backward, up, down, or to the side. It’s considered the gold standard for correcting a weak or overly prominent chin because the results are permanent and the repositioned bone heals in place, maintaining long-term stability.
How the Procedure Works
The surgery is performed through an incision inside the mouth, along the lower gum line, so there’s no visible scar on the face. The surgeon makes a horizontal cut through the chin bone (called an osteotomy), separating a horseshoe-shaped segment from the rest of the jaw. That freed segment is then slid into its new position. The bone can be moved in virtually any direction: forward to project a recessed chin, backward to reduce a prominent one, vertically to lengthen or shorten the lower face, or laterally to correct asymmetry.
Once the bone segment is in the desired position, it’s secured with titanium plates and screws. These stay in permanently for most patients. Because the chin isn’t a load-bearing part of the jaw, there’s minimal risk of the hardware loosening over time, and there’s no medical need to remove it as long as it isn’t causing discomfort. If removal is desired for any reason, surgeons typically recommend waiting at least six months, though the bone itself heals quickly enough that removal could happen as early as three months post-surgery.
Why People Get It
The reasons fall into three broad categories: chin deficiency (the most common), chin prominence, and facial asymmetry. Chin deficiency and asymmetry account for the vast majority of cases. Only about 5 to 6 percent of genioplasties address a chin that projects too far forward.
Beyond aesthetics, functional problems can also drive the decision. Obstructive sleep apnea, difficulty closing the lips comfortably, and dentofacial deformities are all recognized indications. For people undergoing broader jaw surgery to correct bite issues, a sliding genioplasty is often performed at the same time to balance the overall facial profile. It’s also commonly part of facial feminization surgery.
The typical advancement is around 6 to 7 millimeters, though the range can be quite wide, from under 1 mm of fine-tuning up to 18 mm for significant projection. When the goal is to set the chin back, the average reduction is about 3 mm.
Sliding Genioplasty vs. Chin Implants
The biggest advantage of a sliding genioplasty over an implant is versatility. An implant can only add projection forward; it can’t shorten the chin, lengthen it, or correct side-to-side asymmetry. A sliding genioplasty can do all of these in a single procedure. The results also tend to be more stable over time because you’re working with your own bone rather than relying on a foreign material sitting on top of it.
Implants have a simpler recovery and a shorter operating time, which makes them appealing for straightforward cases where the only goal is modest forward projection. However, implants carry their own risks, including shifting out of position, bone erosion underneath the implant over years, and a higher long-term infection risk since they introduce a foreign body.
Sliding genioplasty carries a risk of temporary numbness in the lower lip and chin, with nerve-related sensory changes reported in up to about 6.5 percent of cases. Complications like infection, hematoma, or effects on nearby tooth roots can occur but are uncommon when the surgery is performed by an experienced surgeon.
What Recovery Looks Like
Expect noticeable swelling and bruising for up to two weeks. Swelling peaks around two to three days after surgery, then gradually subsides. For the first several days, you’ll likely be on a liquid or soft-food diet to protect the incision inside your mouth. Hard and crunchy foods should be avoided until your surgeon clears you, since they can irritate the surgical site or disrupt stitches.
Most people can return to desk work and light daily activities within one to two weeks, though strenuous exercise takes longer. The initial shape of your chin will be visible once the worst of the swelling resolves, but subtle swelling can linger for several months before the final contour settles. Because the incision is inside the mouth, oral hygiene matters more than usual during healing. Gentle rinsing and careful brushing around the surgical area help reduce infection risk.
Cost and Insurance
Sliding genioplasty generally costs between $6,000 and $10,000. That range reflects variability in surgeon fees, facility and anesthesia costs, pre-operative imaging, and post-operative care. Geographic location and surgeon experience also play a significant role in pricing.
Insurance coverage depends on the reason for surgery. When the procedure is performed to treat a functional problem like obstructive sleep apnea or a structural jaw deformity, insurance may cover part or all of the cost. Purely cosmetic genioplasties are typically out of pocket. If your case involves both functional and aesthetic goals, documentation from your surgeon about the medical necessity of the procedure can strengthen an insurance claim.