You cannot see this page without javascript.

Skip to menu


K-Doctors’ Procedures

Hundreds of new and latest medical procedures are available with the best Korean doctors at the most reliable clinics!



What is the Two Jaw Surgery?


Two Jaw


It is called the Two-Jaw surgery because operation on the upper and lower jaw is conducted. This surgery corrects the abnormal facial line. Moving the upper and lower jaw, including teeth is needed to create a beautifully balanced facial feature. After a closer assessment, different procedural methods are applied, depending on the position and alignment of the teeth for each individual patient. In order to carry out the surgery, a full medical check-up, diagnosis and cooperation of the plastic surgery department and dental department is essential.


Effects of the Two Jaw Surgery


The Two Jaw surgery’s true concept does not limit in only the aesthetic side, but also balance of the oral health by restoration of the oral functions.

1. Facial size reduction
2. Small and slender chin line
3. Well defined features
4. Sophisticated and youthful appearance
5. Natural facial line appearance
6. Oral function restoration


How is the Two Jaw Surgery Performed?



The Conventional Way

Patients may be required to receive an orthodontic treatment about 1-2 years before the jaw surgery to align their teeth properly. After the corrective jaw surgery, additional orthodontic treatments may be required depending on the patient’s condition.

Conducting the Two-Jaw Surgery First

This approach is used when the teeth alignment and position are already optimal for the surgery, which shortens the total treatment duration. Through the surgery, the jaw is re-positioned properly first and then the patient may be required to undergo post-operative orthodontic treatments.

Combinational Approach

The combinational approach is used for those who whose teeth have minor positioning or alignment issues. First, pre-operative orthodontic treatment is done for a short period of time, and then a routine post-operative orthodontic treatment is required routinely after the two-jaw surgery.


Surgery and Trip Info


1. Surgical Method : To be diagnosed
2. Surgery Time : 2~4 hours
3. Anesthesia Type : General
4. Stitch Removal : 2 weeks after surgery
5. Recovery Period : 1 month
6. Flight : Possible from 1 month after surgery


Before & After Pictures



Who Needs the Two Jaw Surgery?

Two Jaw

For those who are thinking about going through with the two jaw surgery, whether it be for aesthetical aims or intentions of seeking a healthy full-functioning oral structure, should see the list below. We have listed the cases in which one may need this surgery.

1. For those with a long front chin
2. For those with a jutting chin
3. For those with a flat looking facial appearance (face with lack of volume)
4. For those with a protruding mouth (bimaxillary prognathism)
5. For those with a short chin, retreated chin, receding chin
6. For those with a wide looking facial appearance
7. For those with an intensive smile line
8. For those with an asymmetrical face
9. For those who are dissatisfied with previous jaw surgery results


Surgery Solutions for Different Cases

Two Jaw

Type 1 Lantern Jaw

Two Jaw

A lantern Jaw is when the lower jaw is larger than the upper jaw, or when it is bulging out further than the upper jaw. Usually the lantern jaw comes with a third degree malocclusion, causing the face to look longer. Because the chin is popping out, the center of the face usually looks flat and dull.

If a lantern jaw goes through a chin reduction or square jaw surgery without a malocclusion correction, one may not receive satisfying results. In this case, the chin’s position must be adjusted by pushing it inwards with a two jaw operation. This will result in a dimensional looking shorter face line.


Type 2 Protruding Upper & Lower Jaw

Two Jaw

A protruding upper and lower jaw is when occlusion is normal but the upper and lower jaw are bulging out. In this case, the large jaw creates a masculine looking feature. Also the gums may show when one is smiling, and the face generally looks longer.

In the case of the jaw protruding, the two jaw surgery should be operated. Osteotomy for the upper and lower jaw should be operated to push the jaw inwards.


Type 3 Asymmetric Face

Two Jaw

An asymmetric face means that the facial bone structure, muscle, and layer of fat are not balanced out evenly. Eating and chewing may be a problem for those who have this feature. Indigestion and damage to the jaw joints are another problem of the asymmetric face. Improvement of the jaw must be done for those who have this symptom.

If a regular treatment or facial contouring does not work for the asymmetrical face, the two jaw surgery should be conducted. Through the surgery, not only adjustments of the crooked jaw can be done, but soft tissues like the facial skin, muscles, and fat can also be refined to create a healthy and symmetrical face line.


Type 4 Short Chin

Two Jaw

A short chin, which is also called a second degree malocclusion, happens when the upper teeth excessively covers up the lower teeth, which causes an extremely short chin appearance. In this case, aesthetic problems such as too much of the gum showing or unnatural smiling appearances can be stressful.

The surgical method is to pull forward the lower jaw. By adjusting the lower jaw into where it should be. A slender but normal looking jaw line can be featured.


Type 5 Dented Upper Jaw

Two Jaw

A concaved looking facial appearance, also named as the nutcracker face, happens because the upper jaw is located too far back. It generally gives an older looking appearance than one’s real age, and the teeth cannot be seen when he or she smiles.

The surgical method is to pull forward the upper jaw in order to give a balanced look. By adjusting the teeth to the proper position a younger and more normal looking appearance can be made.


Main Two Jaw Surgery Methods

IVRO (Intraoral Vertical Ramus Osteotomy)

Two Jaw

IVRO, short for Intraoral Vertical Ramus Osteotomy, is a surgical method that vertically fractures the posterior section of the mandibular bone. It avoids using plates or wires as a fixator to allow for the jaw to function naturally after the procedure, which is much more convenient for patients during the post surgical recovery period. Additionally, the fracture line on the posterior section provides a slimming effect similar to the surgical outcome of facial contour surgeries.


SSRO (Sagittal Split Ramus Osteotomy)

Two Jaw

SSRO, which is short for Sagittal Split Ramus Osteotomy, on the other hand, is a method that fractures the mandible near the molar. The bone is fractured into two sections and removed, then reconnected for fixation. This method is known for its short recovery period, since the reattachment area has a larger surface which helps the bones adhere more effectively. Additionally, the postoperative oral-fixation period is considerably shorter than the IVRO method.


Protruded Mouth

Two Jaw

A two jaw surgery is conducted when there is need of adjusting the position of the upper and lower jaw. For the protruded mouth, the bimaxillary protrusion surgery, also called as the segmental osteotomy and ASO, should be conducted. The difference with the two jaw surgery is that only the front teeth and bones inside the gum are pushed in. It is important for a patient to be diagnosed properly by an experienced doctor, in whether to go through with the bimaxillary protrusion surgery or two jaw surgery, or a combination of both.


What is a Protruded Mouth?

Two Jaw

The protruded mouth surgery is conducted when there is need to fix the abnormal teeth and gum which jut out. There are mainly tree types within the protruded mouth sector. First, when teeth are protruded but the upper and lower jaw bones may be normal. Second, when teeth are straight but the gum is protruded. Last, when overall protruded mouth, with both the teeth and gum protruded.


Who is it Recommended For?

1. For those who have protruded teeth
2. For those who have a protruded mouth but do not have a long looking face
3. For those who have a protruded mouth with a short chin
4. For those who have a long facial appearance and also a protruded mouth


How is Protruded Mouth Surgery Performed?

Two Jaw

Usually, a protruded mouth is caused by the bone structure itself. In this case, Anterior Segmental Osteotomy (ASO) is required to move the bones of the gum area backwards. If the protruded mouth has complex problems, then the two jaw surgery should be applied.

* Anterior Segmental Osteotomy (ASO) and Two Jaw Surgery

ASO is the surgery method used for a protruded mouth. The protruded mouth can be improved with excision on the front teeth with gum bones moved backwards. The two jaw surgery is for the case with abnormal upper and lower jaw protrusion. Both ASO and two jaw surgery are applied to improve the protrusion but the result may differ with each individual. For successful results, an accurate diagnosis by a well-experienced and specialized surgeon is required. K-Doctors will suggest and advise only the best clinics, which have a safe and professional surgical system.

   ● Minor Case with Protruded Mouth -> ASO with orthodontic treatment
   ● Protruded Mouth Case with Long Face and Long Chin -> Two Jaw Surgery with orthodontic treatment
   ● Protruded Mouth with Only Protruded Teeth -> Teeth extraction with orthodontic treatment


Surgery and Trip Info

Two Jaw

1. Surgical Method : ASO (To be diagnosed)
2. Surgery Time : Approximately 2~3 hours
3. Anesthesia Type : General
4. Stitch Removal : 2 weeks after surgery
5. Recovery Period : Daily activities after 2 week
6. Flight : Possible from 2 weeks after surgery


Before & After Pictures

Two Jaw