Square Jaw Reduction Surgery

Create slender V-line face
from the side to the frontal angle of your face !

Online Consultation Before and After

What is GNG Square Jaw Reduction Surgery?

  • If you have square jaw, that is to say if your lower jaw is big and angulated, it makes your face bigger than it actually is.
    In this instance, GNG not only excises your jaw, but also combine two surgery procedures to maximize v-line effect while ensuring the functional aspect of jaw to deliver satisfying result.

Advantage of GNG Square Jaw Reduction Surgery

Point 1 GNG’s solutions to maximizing slender v-line effect even from the frontal angle

As jaw structure is different for every individual, customized surgery procedure plan should be carried out instead of standard procedure. At GNG, we provide solutions and combine more than two surgery procedures to deliver satisfying result.

- Pre-diagnosis -

  • X-Ray

    Vertical, horizontal ratio of tip of the chin and overall shape of lower jaw is observed

  • 3D-CT

    Identify the location of nerves

Provide solution

High-tech equipment is used to carry out precise examinations prior to surgery to identify length,
ratio and shape of the chin to maximize v-line from the frontal angle of the face.
Aside from this, location of nerves are identified to avoid damage of nerves before surgery is conducted.


Long, curvy excision+excision of cortical bone

Correct broad chin/asymmetry, etc

Long, slender excision

Reduce the size of jaw ▶ Create V-line

Long and curvy excision is made from angulated jaw below ear to end of the chin as much as possible. Since excision line is done in curvy line, it creates natural face line and no additional excision will be required.

excision of cortical bone

Reduce the thickness of jaw ▶ Reduce the width

The bone in our body consists of three layers, which are outer cortical, cancellous, and inner cortical bones. For more slender shape, outer cortical which is the hardest part of the bone is delicately excised.


T-osteotomy + long, curvy excision

If the length from philtrum to chin is long/ your chin is broad and straight/ improve minor protruding, short chin and etc.


Reduce length from philtrum to chin
▶ To look younger
Change position of chin
▶ Improve short & protruding chin

Osteotomy is performed on the chin to improve the tip of your face. This is effective in decreasing the length from philtrum to chin, as well as positioning your chin more forward or backward. During osteotomy, location of nerves are identified to select the best excision method.

Click to read more about GNG T-osteotomy ▶

Long, curvy excision

Decrease the width of jaw ▶ Create V-line

Long and curvy excision is made from angulated jaw below ear to end of the chin as much as possible. Since excision line is done in curvy line, it creates natural face line and no additional excision will be required.


If necessary, perform double chin/buccal fat removal and masseter muscle excision

Solution 1 and 2 procedures are carried out at once if patient has thick muscle or facial fat

  • Double chin/buccal fat removal

    Remove facial fat

    If the patient has a lot of fat in cheeks and chin, excising bone alone is not going to give too much difference. Therefore we perform liposuction and remove buccal fat to double the v-line effect.

  • Masseter muscle excision

    Reduce thickness of muscle

    This procedure is done together with Jaw reduction surgery if patient has big muscle, it involves reducing masseter muscle located near the cheeks to reduce the thickness of muscle.

Hold it!

GNG’s long and slender excision method
minimize side effects and create natural v-line

  • Standard jaw reduction surgery

    There is high chance of uneven excision of jaw as osteotomy is performed without considering overall shape of lower jaw.
    ▶ Requires additional osteotomy surgery

  • VS
  • GNG Long & curvy excision method

    Since excision of jaw is made considering the overall shape of lower jaw, there is slim to no chance of uneven and angulated jaw. ▶ Natural V-line jaw is achieved

Point 2 See the changes with your very own eyes

Patients would be worried how their lower jaw would look like after surgery.
Since GNG Hospital is confident in bringing satisfaction to patients, we present inner and outer changes of lower jaw after the operation.

  • Direct identification of removed bones

    We show the bone from lower jaw that was excised in one long, slender excision method from below ears to end of the chin.

  • Compare before and after operation using
    X-ray and 3D CT

    To show you the improvement of structure,
    we show you the changes done to lower jaw for
    you to compare.

GNG 1:1 dedicated system for facial contouring surgery

Through the collaboration between specialists in facial contouring surgery and post plastic surgery care, we provide 1:1 dedicated care system for patients

Consultation 3D-CT X-ray 3D scanner

Surgery plan 2D, 3D tracing mounting simulation model surgery

Tests prior to surgery 50 types of medical tests before surgery

Safety measures during surgery Safe anesthesia system administered and monitored by anesthesiologist

De-swelling treatments post operation Hyperbaric oxygen therapy and other de-swelling treatments

  • Get your surgery with reassurance!

    Positive pressure system equipped in all surgery rooms

    What is a positive pressure surgery room?

    It blocks out the air from the outside into the surgery room.

    Therefore, the contaminated germ isn’t able to come inside the surgery room. Accordingly, people can get their operations safely without any concern of viruses such as MERS, SARS and Covid-19.

    Additionally, the surgery room is equipped with a sterile air shower system at the entrance. GNG is continuously working hard to keep all instruments sterilized and making the cleanest environment for our patients!

    Don’t worry! It’s a germ-free zone, GNG’s surgery room!

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