What is Jaw Reduction (Mandibular Angle Reduction)? A Complete Guide to Concerns It Can Address and Downtime

"When viewed from the front, my face looks large"
"The jaw angle is prominent from the side, making my facial contour look heavy"

Such prominent jaw angles caused by bone structure are difficult to improve with self-care alone, and a surgical approach through cosmetic medicine is necessary.

This article explains in detail the procedure of "jaw angle reduction (mandibular angle contouring)" that can refine the jaw line you are concerned about.

We also explain the estimated downtime, risks, and points for choosing a clinic so you won't have regrets—so if you're interested in jaw angle reduction but haven't been able to take the first step, please use this as a reference.

What is Jaw Angle Reduction (Mandibular Angle Contouring)?

Jaw angle reduction (mandibular angle contouring) is a surgery that resects and adjusts the protruding mandibular angle (jaw) to create a smooth facial line.

Since the incision is made inside the oral cavity, scarring is minimal, and because it directly addresses the bone structure itself, you can expect a fundamental change in facial contour that cannot be achieved through makeup or massage.

• Formation of a natural line:
  Rather than simply cutting the angle diagonally, the contour is smoothly refined all the way to the chin tip, preventing unnatural steps and achieving a smooth facial outline.
• Improvement of the side profile (mandibular angle and lower border resection):
  To reduce the prominence of the jaw when viewed from the side, the area from the mandibular angle to the lower border is smoothly resected to form a well-balanced line.
• Volume reduction from the front (outer cortex resection):
  By combining "outer cortex resection" to reduce bone thickness, the width when viewed from the front is minimized, aiming for a more refined small-face effect.

Downtime and Risks of Jaw Angle Reduction

For many people considering jaw angle reduction, downtime and risks are a major concern.

To ease anxiety after surgery, it is important to understand in advance what kind of recovery process to expect.

Downtime of Jaw Angle Reduction

The estimated downtime for small face/contouring surgery involving jaw, cheek, and chin bone reduction is generally as follows.

After surgery, results gradually finalize over approximately 3 months, so it is important to monitor the progress without rushing.

Estimated Return to Work

For desk work with minimal physical strain, and in an environment where understanding can be obtained even if others know about the surgery, the estimated return is around 2 days to 1 week after surgery.

On the other hand, for those in sales or customer-facing roles who wish to return without others noticing, approximately 1 month is the estimated timeframe.

※Even for desk work, if you do not want others to know, the same period as for sales and customer service roles applies as a guideline.
※If you are in an environment where you can wear a mask, it will be harder for those around you to notice.

Side Effects and Risks of Jaw Angle Reduction

Jaw angle reduction surgery carries the following risks and side effects.

Swelling	Asymmetry	Bruising	Infection
Scarring	Pigmentation	Foreign body reaction	Pain
Numbness	Sensory abnormality	Hair loss	Tissue necrosis
Visual disturbance	Facial nerve damage	Allergic reaction	Complications such as shock reaction

※The way symptoms appear, the course, and the recovery process vary from person to person.

Choosing a Clinic to Avoid Regret with Jaw Angle Reduction

Jaw angle reduction is a surgery that directly approaches the bone and requires a high level of technical skill.

Therefore, rather than choosing based on a vague impression, it is important to carefully identify a trustworthy clinic in order to avoid regret.

Abundance of Surgical Experience and Diversity of Cases in Bone Reduction Surgery

While a high number of surgeries performed is of course important, please do not judge based on that alone.

Not only jaw angle reduction, but also individual procedures for the cheeks and chin, as well as combined surgeries such as 3-point and 4-point contouring up to 3-point combined surgeries—check whether the clinic handles a wide variety of cases.

When reviewing case photos, choose a clinic where you can check fine details of the results, such as whether the profile and diagonal lines are smooth and free of unnatural steps (secondary angles), not just the front view. This makes it easier to visualize your expected outcome.

Reliable Technique by a Plastic Surgery Specialist and 3D Simulation

Whether a board-certified plastic surgeon with thorough anatomical knowledge of facial bone structure, muscles, nerves, and blood vessels performs the operation is an extremely important factor for both risk reduction and quality of results.

Also, check whether the clinic has the equipment to predict and plan using CT-based 3D simulation.

By using simulation, you and your surgeon can share an understanding of the most suitable contouring approach for your bone structure, reducing discrepancies between expectations and post-operative results.

Whether Risks and Limitations Are Explained Honestly

For questions and concerns such as "How much can surgery change my appearance?" and "What are the risks?", confirm whether there is a doctor who will thoroughly explain the disadvantages, including the limitations of each patient's bone structure, risks such as nerve damage, and the difficulties of the recovery period.

Having an environment where you can resolve all questions and concerns during pre-operative counseling and discuss until you are fully satisfied helps prevent post-operative regret of "this isn't what I expected."

KAI CLINIC TOKYO Jaw Reduction Cases

Full Face (Bimaxillary + Facial Contouring 3-Point + Philtrum Shortening + Nose Revision + Incisional Double Eyelid)

【Surgeon】
Mitsunori Harima
Tatsuya Kamikihara
【Treatment Details & Fees】
Bimaxillary Surgery: ¥2,970,000 / Facial Contouring 3-Point: ¥2,530,000 / Philtrum Shortening: ¥440,000 / Nose Revision (Nasal Tip Plasty: ¥330,000, Nasal Bone Osteotomy: ¥550,000, Auricular Cartilage Harvest (unilateral): ¥165,000) / Full Incision Double Eyelid Surgery: ¥594,000
【Risks & Side Effects】
Swelling, asymmetry, bruising, infection, scarring, hyperpigmentation, pain, numbness, sensory abnormalities, bone displacement, oral contracture, facial nerve palsy, sagging, allergic reactions, etc.

View details of Full Face Surgery

Facial Contouring 3-Point

【Surgeon】
Mitsunori Harima
Tatsuya Kamikihara
【Treatment Details & Fees】
Facial Contouring 3-Point (V-line Osteotomy + Cheekbone Osteotomy): ¥2,530,000
※A monitor program is also available, so please feel free to inquire.
【Risks & Side Effects】
Swelling, asymmetry, bruising, infection, scarring, hyperpigmentation, pain, numbness, sensory abnormalities, bone displacement, oral contracture, facial nerve palsy, sagging, allergic reactions, etc.

View details of Facial Contouring 3-Point Surgery

If You Are Considering Jaw Reduction, Please Consult KAI CLINIC TOKYO

"I'm interested in jaw reduction, but I'm not sure if it's right for me."
"I'd like to actually ask how much I can change."

If you have such questions or concerns, please come to a counseling session at KAI CLINIC TOKYO.

At our clinic, board-certified plastic surgeons perform 3D simulations based on CT images and propose a treatment plan tailored to each patient's individual bone structure.

We will also carefully explain risks and recovery time, so if you have any concerns or questions—no matter how small—please feel free to discuss them during your counseling session.

Summary

Jaw reduction (mandibular angle reduction) is a surgery that addresses jaw prominence stemming from bone structure at its root cause.

However, precisely because it involves the bone structure, reversal after surgery is extremely difficult. Therefore, carefully selecting a clinic is essential to avoid regret.

At KAI CLINIC TOKYO, our experienced and accomplished board-certified plastic surgeons will listen to your concerns and help you achieve your ideal facial contour.

"I want to do something about my jaw."

If you have such a concern, please feel free to consult us at any time.