Every time you take a photo, you have to find the perfect angle – tilt your head down, turn to the side, cover with your hair… Finally, after getting one decent shot, you spend another half hour retouching the jawline. You’re afraid to tie your hair up or tuck it behind your ears, because your “square face” or “prominent jaw” would be completely exposed. This isn’t just about “having an unattractive face shape” – it’s a structural issue of the facial skeleton: a wide mandibular angle and a square chin that make the whole face lack soft, flowing contours. Korea’s V‑LINE square jaw reduction surgery is a classic contouring procedure designed specifically for this skeletal structure problem. Through a combination of mandibular angle reduction + chin reshaping, it changes the lower facial contour at the bone level, transforming a “square face” into a “V‑shaped face.” What exactly is V‑LINE surgery? Will your face really sag after bone reduction? Can it damage nerves? How high are the risks? This article will comprehensively walk you through the principles, suitable candidates, treatment options and prices, procedure experience, duration of results, and potential risks – giving you all the key information in one place so you can make a rational choice.
V‑LINE square jaw reduction is not a single procedure, but a combination of mandibular angle reduction + chin reshaping, with the ultimate goal of transforming a “square” face shape into a “V” shape.
Mandibular Angle Reduction: A wide mandibular angle is caused by two main factors – bony type (the mandible itself flares outward) and muscle type (hypertrophic masseter muscles). V‑LINE surgery primarily addresses the bony type. The surgeon makes incisions inside the mouth (in the mucosa between the gums and lips) and uses specialised bone saws, burs, and files to cut, grind, and reshape the outward‑flaring or overly thick mandibular angle, transforming it from “square” to “curved.” The extent, angle, and amount of resection must be precisely designed according to each person’s facial proportions to avoid over‑resection leading to a “sagging face.”
Chin Reshaping (Genioplasty): Performed simultaneously with the mandibular angle reduction, the surgeon will address your chin shape – whether too long, recessed, or asymmetrical – through T‑shaped osteotomy or chin advancement/shortening. This step ensures that the entire lower facial contour flows smoothly, forming a natural “V” shape from the mandibular angle to the chin.
The essence of V‑LINE surgery lies in “holistic contour design” – it’s not simply about “cutting off a piece” of the mandibular angle, but designing the mandibular angle, chin, and mandibular body as a whole to ensure a natural, symmetrical, and harmonious post‑operative face shape.
V‑LINE square jaw reduction is mainly suitable for the following groups:
However, not everyone is suitable for V‑LINE square jaw reduction. Conditions that are absolute contraindications or require careful evaluation include: severe heart, liver, kidney, or other organ diseases; severe bleeding disorders or coagulation dysfunction; pregnancy and breastfeeding; severe periodontal disease or unhealed oral infections; temporomandibular joint disorders; unrealistic expectations seeking a “new face”; excessive facial fat (should consider liposuction or comprehensive evaluation first).
V‑LINE square jaw reduction in Korea is primarily distinguished by surgical scope and procedure combination. Different plans offer varying degrees of improvement and price ranges:
| Option | Best for | Features | Reference price (KRW) |
|---|---|---|---|
| Mandibular angle reduction (unilateral/bilateral) | Wide jaw angle as the main concern, chin shape acceptable | Improves jaw angle, softens lower facial contours | ~5,000,000 – 9,000,000 |
| V‑LINE (jaw angle + chin reshaping) | Wide jaw angle accompanied by a blunt or short chin | Classic combination – comprehensive lower face contour improvement | ~8,000,000 – 15,000,000 |
| V‑LINE + Masseter reduction (botulinum toxin) | Mixed‑type square face with both wide bone structure and hypertrophic masseter | Dual improvement – bone + muscle for more thorough results | ~8,500,000 – 15,500,000 |
Note: Prices above are reference ranges for the Korean market. The cost of V‑LINE surgery varies by procedure combination, amount of bone resection, surgeon qualification, hospital level, and whether 3D‑CT navigation is used. Please refer to your in‑person consultation. Bone surgery is a high‑difficulty level 4 procedure – price should not be the primary consideration.
Your choice should be made after discussing your facial bone structure, chin shape, and budget with a qualified doctor. For most people with a square jaw, V‑LINE (jaw angle + chin reshaping) is the most comprehensive and classic choice.
Pre‑procedure preparation: On your first visit, the doctor conducts a detailed consultation, assessing mandibular angle shape, chin proportion, masseter muscle size, and overall facial symmetry. Pre‑operative 3D‑CT of the skull is required to allow the surgeon to precisely measure bone thickness and the location of the inferior alveolar nerve canal to design the surgical plan. Stop taking anticoagulant medications such as aspirin and vitamin E 1‑2 weeks before surgery; stop smoking and drinking 1 week before surgery. The procedure is performed under general anaesthesia, with an 8‑hour fast before surgery.
During the procedure: The surgeon makes small incisions (about 2‑3 cm) in the gum area on both sides of the mouth, dissects the tissue to expose the mandible, and uses specialised bone saws to resect the outward‑flaring mandibular angle along the pre‑planned lines, then smoothes the cut edges with bone burs. Simultaneously, chin reshaping is performed – according to the pre‑operative plan, T‑shaped osteotomy or chin advancement/shortening is carried out. Finally, the osteotomy segments are fixed with absorbable sutures or titanium screws (if needed), and the intraoral incisions are closed. The surgery takes about 2‑4 hours (depending on complexity).
Immediately after: Hospitalisation for observation is required for 1‑2 days. Significant swelling, bruising, and facial tightness will occur – this is a normal traumatic response after bone surgery. An elastic compression garment is worn for about 1‑2 weeks to help shape and reduce swelling. For 1 week after surgery, a liquid diet is required, gradually transitioning to soft foods.
V‑LINE square jaw reduction results unfold in three phases:
Weeks 1‑2 (severe swelling phase) – facial swelling is pronounced, like a “steamed bun” face – the contour is completely obscured. The result is masked by severe swelling at this stage.
Weeks 2‑4 (rapid swelling reduction phase) – swelling gradually subsides, and facial contours begin to emerge. You can start to see the reduction in the mandibular angle and changes in chin shape. However, some swelling remains, nasolabial folds may appear deeper, and facial expressions may not look natural yet.
Months 3‑6 (result stabilisation phase) – most swelling has subsided, bone healing is largely complete, and facial contours are stable. At this point, the mandibular angle reduction is clearly visible, the chin shape is natural, and the overall V‑line flows smoothly. After 6‑12 months, soft tissues have fully adapted to the new bone structure, and the results are at their best.
The results of V‑LINE square jaw reduction are permanent – the resected bone does not grow back. However, as ageing continues, soft tissue laxity may affect contour clarity over time. Once the results are stable, you benefit for life.
Q: Is V‑LINE square jaw reduction painful?
A: The surgery is performed under general anaesthesia – completely painless. In the 1‑3 days after surgery, there will be noticeable swelling and pulling sensations, but the hospital provides pain pumps and oral painkillers for relief. Most patients report that the hardest part is not the pain, but the swelling and the “hunger” of being on a liquid diet.
Q: Are there side effects or long‑term risks?
A: V‑LINE surgery is a high‑difficulty level 4 plastic surgery procedure with inherent risks. Major risks include:Inferior alveolar nerve injury– may cause temporary or permanent numbness in the lower lip and chin area;Bone asymmetry– uneven resection between sides, requiring precise surgeon control;Secondary mandibular angle formation– an unnatural new angle may form after resection;Infection or haematoma– incidence is low under standard sterile technique;Facial sagging/tissue laxity– after bone reduction, soft tissues may lose support, leading to mild sagging (more common in those over 30 with poorer skin elasticity). Choosing a reputable clinic, 3D‑CT‑guided surgery, and an experienced surgeon significantly reduces these risks.
Q: Will my face sag after V‑LINE surgery?
A: This is the most common concern about V‑LINE surgery. Theoretically, after removing part of the bone, the attachment area for soft tissues (muscle, fat, skin) does decrease. However, if the surgery is well‑designed, the resection amount is appropriate, and the surgeon’s technique is skilled, most people do not experience noticeable facial sagging. For older patients (over 35) or those with poorer skin elasticity, the surgeon may recommend a facelift alongside the procedure or a more conservative resection plan.
Q: What’s the difference between V‑LINE surgery and botulinum toxin for facial slimming?
A:Botulinum toxin facial slimmingonly targets hypertrophic masseter muscles, causing them to atrophy through paralysis – it does not change bone structure, lasts 6‑12 months, and is suitable for muscle‑type square faces;V‑LINE surgerydirectly resects the mandibular bone, fundamentally changing the facial contour with permanent results, suitable for bone‑type square faces. If you have both, combined treatment is recommended.
💡 Key note: V‑LINE square jaw reduction is not “minimally invasive” – it is a high‑difficulty level 4 procedure that changes the facial skeleton. The changes it brings are permanent and fundamental, but they also come with corresponding risks. This is not a procedure to “just try out.”
Core risks: Inferior alveolar nerve injury is the most serious potential risk – it can cause loss or alteration of sensation in the lower lip and chin area. Although the incidence of permanent injury is extremely low (<1%), once it occurs, repair is difficult. In addition, facial sagging is another concern, especially for older patients or those with poor skin elasticity.
Post‑care essentials: For 1 week after surgery, a liquid diet is required – avoid chewing; for 2 weeks, avoid strenuous exercise, bending over, and stooping; for 1 month, avoid opening the mouth too wide (yawning, laughing); for 3 months, avoid any external impact to the face; for 3‑6 months, use strict sun protection to prevent scar hypertrophy; take antibiotics and anti‑inflammatory medications as prescribed, and attend follow‑up appointments as scheduled.
To maximise results, be sure to: choose only top‑tier plastic surgery hospitals certified by the Korean Ministry of Health and Welfare, with the lead surgeon having performed over 1,000 contouring procedures; undergo a mandatory 3D‑CT scan before surgery to allow the surgeon to precisely assess nerve position and bone thickness – this is key to ensuring nerve safety; communicate thoroughly before surgery – clarify your goals, understand potential risks and the recovery process; prepare yourself mentally – there will be 2‑4 weeks of noticeable swelling and a 3‑6 month recovery period – this is the normal course of bone surgery, not a sign that something went wrong; be realistic about results – V‑LINE surgery can significantly improve your jaw contour, but it will not make you into a different person. Aim for a “natural and harmonious V‑shaped face” rather than an “extremely sharp chin” – that is how you achieve truly satisfying results.
Medical disclaimer:
This article is for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. V‑LINE square jaw reduction is a high‑difficulty level 4 plastic surgery procedure with significant individual variations in risk. Prices, treatment options, and timelines mentioned are for reference only – please refer to detailed consultations and professional examinations at licensed medical institutions.
All medical procedures carry potential risks, including but not limited to nerve injury (permanent or temporary), asymmetry, poor bone healing, infection, haematoma, facial sagging, and unsatisfactory results. Before making a final decision, please undergo a multi‑dimensional evaluation at an authorised medical institution, with a senior plastic surgeon assessing your suitability based on your bone structure, nerve pathways, and health status. The author and publisher assume no legal liability for any decisions made based on this content.
If you experience any facial discomfort, nerve abnormalities, or have concerns, please seek prompt advice from a licensed physician.