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Zeah Dental Hospital

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MON/WED/THU
10:00 am - 07:00 pm
TUE/FRI
10:00 am - 09:00 pm
SAT
10:00 am - 05:00 pm
LUNCH
01:00 pm - 02:00 pm
Closed on public holidays
and on Sundays
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Optimal customized treatment planning and surgery, Zeah’s Anterior Segmental Osteotomy

Information on treatment and surgery

Anterior Segmental Osteotomy (ASO)

Protrusion of the mouth can leave a negative facial impression to others. Bimaxillary protrusion is a common characteristic found in Asians and can be categorized according to its cause where treatment options will differ. Depending on the diagnosis and degree of protrusion, treatment options are available from orthodontics to surgery.

Treatment options depending on Severity of protrusion

The different surgical methods for treatment of bimaxillary protrusion include: Labial cutting method, Palate cutting method and vestibular cutting method.

Treatment depending on the gravity of protrusion
Mild Bimaxillary Protrusion Moderate Bimaxillary Protrusion Severe Bimaxillary Protrusion
If the protrusion is less than 4mm when examined from side view, and are teeth related, orthodontic treatment may be enough to gain satisfactory results. If the protrusion is more than 4mm from side view and is a structural bone related protrusion (A-point), a surgical approach of anterior segmental osteotomy (ASO) would be effective providing satisfactory results. It usually involves the removal of 4 teeth (upper and lower, left and right premolars) during surgery, to allow the anterior bone to be pushed in and fastened. It refers to a situation wherein long face, asymmetry, protruding chin, and short chin all apply and a more delicate and complex surgery is needed. Orthognathic surgery alone or orthognathic surgery and anterior segmental surgery may have to be done simultaneously.

Anterior Segmental Osteotomy (ASO)

This is a surgical method of treatment when both the bones and teeth are protruding.

수술설명 사진

Extraction of upper and lower premolars

Fracturing and relocation of upper jaw into spaces remaining from premolar extraction

Fastening the bone

Orthognathic surgery

수술설명 사진

Fracturing the upper and lower jaw

Relocation of fractured upper and lower jaw

Fastening of the bone



돌출입 전후사진
  • Before
  • After(after 3 months)

Basic Surgery Information

  • Duration of Surgery: 1-2 hours
    Method of Anesthesia: general anesthesia
  • Period of hospitalization: 1-2 days
    No need for suture removal
  • In-hospital treatment: 2-3 times
    Recovery period: 2 weeks

Post-operative edema, bleeding, inflammation and other side effects vary in each individual. Consult with the postoperative care staff at Zeah if there are concerns or discomfort.

  • 원장사진
  • Zeah Doctor’s Guide

    Dr. Young Ho Kang (Chairman)

There is not one correct method for the treatment of bimaxillary protrusion.

Some of the current treatment methods that are available to treat bimaxillary protrusion are as follows: orthodontics, bimaxillary protrusion surgery, orthognathic surgery, etc. To minimize the risk of losing dentition or the chances of re-operating, the patient must be thoroughly examined and diagnosed. Based on the patient’s condition, detailed research and planning should be carried out by a well-experienced specialist/surgeon in the field.

ZEAH Two-jaw Surgery

Safety + safety, sufficient consultation with the operating surgeon/ co-consultation with specialists, simultaneous improvement on aesthetic issues + functional problems/ systematic diagnosis + detailed plan, accurate and precise operation

  • Safety first! Safe operation management system

    Zeah Dental Hospital is equipped with experts and advanced UPS technology that enables uninterrupted surgical procedures during emergency situations. Each operating room consists of defibrillators and emergency kits, along with state-of-the-art monitoring systems that reviews the patient in real time.
  • Specialist collaboration, perfecting the improvements to aesthetic and functional issues

    Zeah Dental Hospital consist of various specialists that collaborate to deliver results. Their expertise in oral and maxillofacial surgery, cosmetic surgery, orthodontics, prosthetics and anaesthetics ensures to improve both aesthetic and functional issues.
  • Sufficient consultation directly with the operating surgeon + reliable surgery

    Dr. Young Ho Kang is a highly experienced orthognathic surgeon that has no records of failure or accident in any of the 4000 surgeries he has performed over the last 15 years. He personally consults each patient to tailor the surgical procedures to deliver the highest level of satisfaction in a functional and aesthetic aspect.
  • Systematic diagnosis, detailed treatment planning and precise operation

    Zeah Dental Hospital deliberately carries out a comprehensive examination
    prior to surgery for safety purposes and to ensure accurate results.
    The examinations include blood and disease tests plus CT and cephalon x-rays. Preliminary simulation of the surgical procedure is done, comparing the actual face and ideal facial shape based on the dental model and pictures of the oral cavity to maximize desired results.