Chin Surgery & Genioplasty in Korea: Implant vs Sliding Osteotomy

How Chin Surgery Works: Genioplasty vs Implant

턱 성형술 (teok seonghyeongsul — chin reshaping surgery) in Korea encompasses two structurally different operations that address different anatomical problems. Understanding which problem a patient’s chin actually has is the prerequisite for choosing between them.

Sliding genioplasty is an osteotomy — a controlled bone cut. The surgeon makes an intraoral incision (inside the lower lip, leaving no external scar), then cuts horizontally through the lower portion of the chin bone (the mandibular symphysis) using an oscillating saw. The freed bone segment is repositioned in the required direction — forward (advancement), backward (setback), upward (vertical shortening), downward (vertical lengthening), or rotated to correct asymmetry — and secured with titanium plates and screws. The hardware is inert and permanent; it is not routinely removed. Because the bone itself moves, sliding genioplasty can correct any axis of chin position.

The inferior alveolar nerve (IAN) — the nerve that supplies sensation to the lower lip and chin — runs near the osteotomy site. Temporary numbness from IAN stretch or bruising affects an estimated 20–40% of genioplasty patients and typically resolves within 3–6 months; permanent numbness occurs in under 2% of cases at specialist practices.

Chin implants take a different approach. A silicone implant — pre-formed in various widths and projection depths — is placed through a small intraoral or submental (under-chin) incision and positioned directly over the chin bone, beneath the muscle layer. The implant is secured with sutures to surrounding tissue, or occasionally with a single titanium screw. No bone is cut. The procedure takes approximately 30–60 minutes under sedation or general anesthesia, versus 60–120 minutes for genioplasty.

The structural limitation of chin implants is fixed: they add forward projection and width, but they cannot move the bone upward, downward, or laterally. An implant placed over an asymmetric or vertically deficient chin will sit on top of those problems rather than correcting them.

Plastic surgery and dermatology collectively account for the largest share of procedures sought by international patients in Korea,² making Korea one of the highest-volume markets globally for both techniques applied to Asian facial anatomy.

Technique Comparison: Genioplasty vs Chin Implant

Three questions determine which technique fits: What direction does the chin need to move? Does the problem involve vertical height or asymmetry? Does the patient require a reversible option?

The table below maps each technique variant to its corrective scope.

Two points from the table carry the most practical weight. First, reversibility: chin implants can be removed under local anesthesia if the patient is dissatisfied or a complication arises — genioplasty bone movement is permanent once the osteotomy heals (approximately 8–12 weeks). Second, implant-related risk: bone resorption under a silicone chin implant is a documented long-term phenomenon affecting an estimated 10–20% of patients over 10 years, gradually reducing the bony platform on which the implant sits and potentially altering the result over time. Genioplasty carries no equivalent risk because no foreign material is left in contact with bone under sustained pressure.

Board certification from the 대한성형외과학회 (Daehan Seonghyeong Oegwa Haghoe — Korean Society of Plastic and Reconstructive Surgeons, KSPRS) requires six years of medical school, a four-year plastic surgery residency, and passage of KSPRS board examinations.¹ For osteotomy procedures specifically, confirm that the surgeon has documented operative volume in facial contouring cases beyond standard rhinoplasty or soft-tissue work. KSPRS maintains a public registry where patients can verify board certification by searching a surgeon’s name directly on the KSPRS website.¹

Candidacy: When to Choose Genioplasty vs Implant

The candidacy decision flows from diagnosis, not preference. A lateral cephalometric X-ray (a standardized side-profile skull X-ray) and — at many Korean specialist clinics — a 3D CT scan define the chin’s position in all three dimensions before any technique is proposed.

One additional candidacy factor for international patients: genioplasty requires a minimum post-operative stay of 10–14 days in Korea before air travel is medically appropriate, given swelling, the osteotomy healing phase, and the need for at least one follow-up imaging review. Chin implant patients typically clear for departure in 7–10 days. Both timelines assume an uncomplicated procedure and surgeon sign-off.

Results and Longevity

Genioplasty results are skeletal and permanent. Once the osteotomy heals — typically 8–12 weeks for initial consolidation, with full bony remodeling over 6–12 months — the chin bone is in its new position. There is no implant to migrate, resorb, or become infected. The soft-tissue envelope (skin, muscle, and fat) adapts to the repositioned bone over the healing period, with the final aesthetic result visible at approximately 3–6 months post-operatively as residual swelling fully resolves.

Asymmetry correction through genioplasty holds its correction long-term because the underlying skeletal cause has been addressed. Soft-tissue asymmetry that exists independently of the bone — for example, uneven fat distribution or muscle volume — is not corrected by genioplasty alone.

Chin implant results are stable in the medium term but carry a documented long-term drift. In the first 1–3 years, a well-placed implant in a correctly selected patient produces a natural-looking result with no maintenance required. Over 10 years, bone resorption under the implant occurs in an estimated 10–20% of patients, which can gradually reduce the bony foundation and alter the projection. Implant migration — the implant shifting from its original position — is a less common but recognized complication. Combined revision rates over a 15-year horizon are estimated at 10–15%.

Patients seeking chin surgery as part of broader facial contouring in Korea fit within a growing international patient population: 1,170,467 foreign patients received medical treatment in Korea in 2024,² with plastic surgery and dermatology accounting for the largest share of procedures sought internationally.²

Recovery Timeline

Recovery differs meaningfully between the two techniques. The timelines below reflect uncomplicated procedures performed by experienced surgeons; individual variation applies.

Chin implant recovery is shorter across every phase. Swelling peaks at 48–72 hours and is largely socially presentable within 7–10 days, though mild residual swelling persists for 4–6 weeks. Patients can return to sedentary work within 5–7 days. Strenuous exercise and contact activities are restricted for 4 weeks. Diet is soft-food for the first 2 weeks if an intraoral incision was used. No osteotomy healing phase is required.

Genioplasty recovery has a longer arc because bone healing is involved. Key phases:

• Days 1–3: Significant swelling and bruising to the lower face and neck; jaw movement is limited; liquid and soft diet begins immediately
• Days 4–10: Swelling peaks then begins to plateau; most patients are not publicly presentable; intraoral sutures dissolve over 10–14 days
• Weeks 2–3: Social swelling reduces enough for most patients to return to non-physical work; residual firmness and some numbness persist
• Weeks 4–6: Return to light exercise; most external swelling resolved; lower-lip sensation improving in the majority of patients with temporary IAN involvement
• Months 3–6: Final result visible as deep swelling resolves and bone fully remodels; sensation typically fully recovered by 6 months

Gangnam-gu receives approximately 60% of medical tourists seeking aesthetic procedures in Korea,² and the majority of facial contouring clinics with high osteotomy volume are concentrated in this district — relevant for international patients planning accommodation and follow-up logistics.