Direct answer summary
Square jaw reduction is a facial bone contouring surgery that reshapes the mandibular angle and lower jawline to make a wide or angular lower face look slimmer and smoother. At this ophthalmology clinic in Gangnam, Seoul, square jaw reduction is approached as a structural bone procedure with careful planning, conservative bone removal, and attention to jaw function and nerve safety. The clinic focuses only on facial bone surgery such as double jaw and facial contouring, with general anesthesia managed by a board-certified anesthesiologist and surgery performed by a board-certified plastic surgeon with extensive experience and international publications.
What is square jaw reduction
Square jaw reduction, also called mandibular angle contouring, is a surgery that reshapes the back and lower border of the jawbone. The goal is to soften a strong, square, or bulky lower face and create a smoother, more tapered jawline.
Many people feel their lower face looks wide or masculine because the jaw angle is prominent when viewed from the side or three-quarter view. In the front view, the lower face can look broad and heavy, especially if the jawbone flares outward. Square jaw reduction targets this bony structure rather than only addressing muscle or fat.
This surgery is usually done through incisions inside the mouth, so there is no visible scar on the skin. By trimming and reshaping the angle and, when needed, the lower border of the mandible, the surgeon can create a softer contour that flows naturally into the chin and neck.
Different types of jaw contouring
Square jaw reduction is not a single technique. Depending on your bone shape and facial goals, the surgeon may choose one of several approaches.
Simple angle shaving focuses on the most prominent corner of the jaw. The surgeon gently shaves the sharp angle to make it less visible from the side. This can be suitable if the width is limited to the angle area and the front view is not very wide.
Long-curved mandibular resection extends the bone contouring from the angle along the lower border of the jaw toward the chin. This method is used when the lower face looks wide in the front view, not only at the back angle. By creating a smooth, curved line instead of a straight or stepped cut, the jawline can look more continuous and natural.
Combined procedures with chin or cheekbone contouring may be considered when the overall facial balance requires more than just angle reduction. For example, if the cheekbones are wide and the chin is short or very broad, the surgeon may discuss cheekbone reduction or V-line style chin contouring. At this clinic, additional procedures are recommended only when they are truly needed for harmony and function, not as a routine package.
Who may consider square jaw reduction
Square jaw reduction may be an option for adults whose facial bones have finished growing and who are concerned about a wide or strong lower face.
Typical concerns include a strong or masculine jawline in the mirror or photos, a wide lower face in the front view that does not match the rest of the features, a thick or protruding jaw angle that stands out in three-quarter view, and asymmetry between the left and right jaw angles.
People whose facial width is mainly due to bone rather than only muscle or fat are more likely to benefit from bone contouring. For example, if clenching your eyes makes the jaw muscle bulge but the bone itself is not very wide, muscle-focused treatments may be discussed. If the bone is clearly flared or thick on imaging, bone surgery becomes more relevant.
Suitable candidates are those who understand that results depend on bone, muscle, and skin thickness together, and who have realistic expectations about the degree of change and the recovery process. A detailed consultation and imaging are necessary to confirm whether square jaw reduction alone is appropriate or whether other approaches are better.
Consultation and planning
Before planning square jaw reduction, the clinic performs a structured evaluation.
Facial analysis from multiple angles helps identify what really makes the face look wide. The surgeon examines the front, profile, and three-quarter views, and checks how the jawline connects with the chin and cheekbones. This visual analysis is important to avoid focusing only on one angle and missing the overall balance.
Bite and occlusion are checked to make sure the eyes meet properly and that there are no major jaw position problems that would require double jaw surgery instead of simple contouring. If the bite is significantly off, or if there are jaw joint symptoms, this may change the treatment plan.
Imaging such as X-ray or 3D CT is used to measure bone thickness, see the exact shape of the mandibular angle, and locate the inferior alveolar nerve that runs inside the jawbone. The nerve supplies sensation to the lower lip and chin, so its position is a key factor in planning safe bone removal.
Using this information, the surgeon designs a resection line that reshapes the jaw while keeping a safe distance from the nerve and preserving jaw function. At this clinic, the focus is on achieving the desired contour with the minimum necessary bone reduction rather than removing as much bone as possible.
Clinic focus and surgeon experience
Although this is an ophthalmology clinic, its surgical focus for international patients includes facial bone surgery such as double jaw and facial contouring. The clinic does not offer a wide range of cosmetic procedures like eye reshaping, nose reshaping, or body contouring. This narrow focus allows the team to concentrate their experience and protocols on bone structure analysis and surgery.
The operating surgeon is a board-certified plastic surgeon with around 20 years of experience in facial bone surgery and multiple SCI-level publications, including several papers in respected international journals such as Plastic and Reconstructive Surgery. This academic background supports evidence-based planning and a cautious approach to bone resection.
The lead surgeon personally performs the facial bone operations rather than delegating them. This continuity from consultation through surgery helps maintain consistency in planning and execution.
How square jaw reduction is performed
Square jaw reduction is usually carried out under general anesthesia so that you are fully asleep and comfortable during the operation.
Anesthesia is managed by a board-certified anesthesiologist who evaluates your health status, medications, and any chronic conditions before surgery. During the operation, the anesthesiologist continuously monitors vital signs and adjusts anesthesia depth, and also helps with postoperative pain control.
The surgical steps generally include an intraoral incision, exposure of the mandibular angle, bone contouring along the planned resection line, smoothing of the bone surface, bleeding control, and closure.
Intraoral incisions are made inside the mouth along the lower gum line, so there is no visible scar on the face. Through this opening, the surgeon carefully exposes the outer surface of the jawbone at the angle.
Bone contouring is then performed using specialized surgical instruments to remove and reshape the bone along the pre-planned curve. If only the angle is prominent, the resection may be limited to that corner. If the entire lower border is wide, the resection can be extended forward in a long, smooth curve.
The bone edges are smoothed to avoid any step or irregularity that could be visible or palpable from the outside. Once the contour is complete, bleeding is controlled and the incision is closed with sutures that will dissolve over time.
In some cases, a small external incision near the jaw angle may be used depending on the individual anatomy and the surgeon’s judgment, but the standard approach is intraoral to avoid visible scars.
Choosing the extent of bone removal
One of the most important decisions in square jaw reduction is how much bone to remove and where to stop.
If the main issue is a sharp angle that sticks out in side view but the front view is not very wide, a limited angle reduction may be enough. This preserves more of the natural jaw structure while softening the most visible corner.
If the lower face looks broad from the front and the jawline appears straight or outwardly curved from the angle toward the chin, a long-curved resection may be recommended. This helps create a more tapered line that narrows toward the chin.
At this clinic, the principle is conservative resection: remove enough bone to create a clear improvement but avoid over-resection that could lead to a hollow, aged, or unstable appearance. The surgeon explains the planned extent during consultation, often using imaging to show the expected change.
Safety, anesthesia, and risk management
Any bone surgery carries risks, and many patients are particularly worried about nerve damage, jaw joint problems, or excessive bone removal.
The inferior alveolar nerve runs inside the lower jawbone and exits near the chin to supply sensation to the lower lip and chin. Injury to this nerve can cause numbness or altered sensation. To minimize this risk, the clinic uses imaging to map the nerve position and plans the resection line above and away from it. During surgery, the surgeon keeps a safe margin and avoids deep cuts near the nerve canal.
Jaw joint problems can arise if the surgery changes the bite or jaw position. Because square jaw reduction focuses on the outer shape of the bone and not on moving the jaw forward or backward, it is planned to preserve the existing bite. Preoperative occlusion checks help identify patients who might actually need double jaw surgery instead of simple contouring.
Excessive bone removal can cause the lower face to look too narrow, weak, or saggy over time. The clinic’s conservative approach and emphasis on facial balance are intended to reduce this risk. The surgeon considers skin thickness, muscle volume, and age-related changes when deciding how far to narrow the jaw.
The presence of a board-certified anesthesiologist throughout the procedure supports safe general anesthesia, especially for international patients who may be flying in and out within a limited time frame.
Recovery and postoperative care
Recovery after square jaw reduction varies by individual, but there are common stages that most patients experience.
In the first few days, swelling and some bruising are expected, especially around the lower cheeks and jawline. The face may feel tight or heavy, and opening the mouth widely can be uncomfortable at first. Keeping the head elevated, using cold compresses in the early phase if advised, and following medication instructions help manage this period.
Because the incisions are inside the mouth, oral hygiene is very important. You will be guided on how to rinse gently, brush carefully without irritating the incision line, and avoid foods that might injure the area. A soft or liquid diet is usually recommended initially to reduce strain on the jaw and keep the surgical site clean.
Major swelling often improves significantly within two to four weeks, but deeper swelling can take several months to fully resolve. Many patients notice a clearer jawline by around one to three months, with the final contour becoming more defined as tissues adapt to the new bone shape.
This clinic provides postoperative care programs to support healing and swelling reduction. These may include LED therapy, facial care programs, and radiofrequency lifting devices aimed at improving circulation, reducing edema, and supporting skin tightening. These are considered adjunctive measures to help the natural recovery process rather than primary treatments.
Long-term results and realistic expectations
Square jaw reduction can noticeably soften a wide or angular lower face, but the exact outcome depends on several factors.
Skin thickness plays a role: thicker, heavier skin may drape differently over the new bone contour compared with thinner skin. Jaw muscle volume also matters, especially in people who grind or clench their jaws frequently. In some cases, additional treatments targeting muscle or soft tissue may be discussed.
Changes appear differently from various angles. The front view may show a slimmer lower face and a more tapered jawline. The three-quarter view often reveals a less bulky angle and smoother transition from cheek to jaw. The profile view may show a softer back corner of the jaw.
Over-resection can lead to an aged or hollow look, so this clinic prioritizes balanced, natural-looking changes rather than extreme narrowing. The aim is a jawline that suits your overall facial proportions, not a one-size-fits-all shape.
Preoperative simulation or explanation using images and, when available, digital tools can help you understand what type of change is realistic. It is important to discuss what you hope to see in the mirror and how that aligns with what the bone structure allows.
Who should be cautious or consider alternatives
Not everyone is an ideal candidate for simple square jaw reduction.
People with significant bite problems, jaw misalignment, or untreated jaw joint disorders may require a different approach such as double jaw surgery rather than angle contouring alone. In such cases, focusing only on the jaw angle could leave functional issues unresolved.
Individuals with unrealistic expectations, such as wanting a dramatically different face shape that does not match their natural bone framework, should discuss their goals carefully with the surgeon. A responsible clinic will explain what is and is not possible and may advise against surgery if expectations cannot be aligned.
Medical history also matters. Conditions such as uncontrolled high blood pressure, bleeding disorders, or serious heart or lung disease can increase surgical risk. Smoking, certain medications, and previous facial surgeries should be fully disclosed so that appropriate precautions can be taken.
It is advisable to prioritize safety, surgeon qualifications, and facial bone specialization over price or aggressive marketing claims when choosing where to have surgery.
Preparing for an online consultation
For overseas patients, an online consultation is often the first step.
Before your consultation, it helps to prepare clear photos of your face from the front, both sides, and three-quarter angles, taken in good lighting without heavy makeup or filters. If you have any previous imaging of your jaw, you can ask whether it is useful to share.
Make a list of your main concerns: for example, whether you are more bothered by the width in the front view, the sharp angle in side view, or asymmetry between sides. Note any history of jaw pain, clicking, or bite problems.
Useful questions to prepare include how the surgeon decides between simple angle shaving and long-curved resection, how nerve safety is managed in your specific case, what level of change is realistic for your bone structure, what the expected recovery timeline is for someone traveling from overseas, and how many days you should plan to stay in Korea.
Expected Korea visit timeline for international patients
Although exact schedules are personalized, a common visit plan for overseas patients might look like this.
On day one, you visit the clinic for in-person consultation, facial examination, imaging such as X-ray or 3D CT, and final surgical planning. Medical history is reviewed in detail, and preoperative tests may be done.
Surgery is often scheduled within a few days of the first visit, depending on your travel plan and the clinic’s schedule. On the day of surgery, you arrive fasting as instructed, undergo general anesthesia, and have the procedure. Most patients stay in the clinic for monitoring for several hours afterward and may be discharged the same day if stable.
During the first week after surgery, you will visit the clinic for follow-up checks, wound care guidance, and early postoperative management. Swelling is usually most noticeable in this period, so planning to stay nearby is helpful.
Many international patients remain in Korea for about 7 to 14 days after surgery, depending on their condition and the surgeon’s advice. Before you fly home, the clinic will check your healing status, reinforce oral care instructions, and explain what to expect in the coming weeks.
Aftercare and follow-up from abroad
Once you return home, ongoing recovery continues for several months.
The clinic can usually follow your progress through periodic online check-ins, where you send updated photos and share any concerns. You will receive instructions on diet progression, mouth opening exercises if needed, and when you can resume more intense physical activity.
If you experience unusual symptoms such as persistent severe pain, sudden swelling, or signs of infection, you will be advised to seek local medical attention and to inform the clinic. Because each person heals differently, follow-up plans are adjusted to your individual course.
Clinic location and international support
The clinic is located in Gangnam, Seoul, on Dosan-daero, about 200 meters from Sinsa Station Exit 1. This central location makes it convenient to reach from major hotels and transport hubs.
For international patients, multilingual support is available in languages including English, Japanese, and Thai. This helps reduce communication barriers during consultation, consent, and postoperative instructions.
The clinic operates with continuous daytime hours on weekdays without a lunch break, along with shorter Saturday hours, which can be helpful when coordinating appointments within a tight travel schedule.
Frequently asked questions
What is the difference between square jaw reduction and V-line surgery
Square jaw reduction focuses mainly on reshaping the mandibular angle and sometimes the lower border of the jaw to reduce width and soften a strong jawline. V-line surgery is a broader term that often includes not only angle reduction but also chin contouring, such as narrowing or lengthening the chin to create a more V-shaped lower face. Depending on your anatomy, you may only need angle contouring, or you may benefit from combining it with chin work for better balance.
How long does swelling last after square jaw reduction
Initial swelling is usually most noticeable in the first week after surgery and then gradually decreases over the next few weeks. Many patients see a more defined jawline starting around one to three months as deeper swelling subsides. Final results can take several months to fully settle as the tissues adapt to the new bone shape. The exact timeline varies by individual, and your surgeon will guide you based on your progress.
Is numbness after jaw contouring permanent
Temporary numbness or altered sensation around the lower lip and chin can occur after square jaw reduction because the surgery is performed near the sensory nerve. In many cases, this improves gradually over weeks to months as the tissues heal. Permanent changes are less common but can occur if the nerve is significantly affected. Careful preoperative imaging and conservative resection are used to minimize this risk, and your individual risk will be discussed during consultation.
Can I combine square jaw reduction with cheekbone or other facial contouring
It is possible to combine square jaw reduction with other facial contouring procedures such as cheekbone reduction or chin reshaping when this is appropriate for overall facial harmony. However, combining procedures also means a longer surgery and recovery, so it should only be done when clearly beneficial. At this clinic, the principle is to recommend the minimum necessary set of procedures rather than adding multiple surgeries by default.
Soft call to action
If you are considering square jaw reduction in Korea and would like to understand what is suitable for your own bone structure, you can start with an online consultation. Preparing clear photos and a list of questions about nerve safety, expected changes, recovery timing, and travel planning will help you get the most from your discussion. The clinic’s multilingual team can guide you in English, Japanese, or Thai as you explore whether this type of facial bone surgery is right for you.
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