What is

Orthognathic Surgery?

Orthognathic surgery is the movement and correction of the upper and lower jaw,

treating any functional and aesthetics problem. It improves facial discrepancies

such as bimaxillary and chin protrusion, short chin, and facial asymmetry.

Orthognathic surgery is the treatment of facial, airway and bite discrepancies by

moving the jaws (gnathic) into the correct (ortho) position for proper esthetics and function.

Orthognathic surgery can involve the upper jaw or maxilla (LeFort osteotomy) and/or

the lower jaw or mandible (bilateral sagittal split osteotomies)

Lower Jaw Surgery

There are two types of Lower Jaw surgery;

Sagittal Split Ramus Osteotomy (SSRO) and Intraoral Vertical Ramus (IVRO)

Sagittal Split Ramus Osteotomy (SSRO) Surgery that involves dividing the back of the lower jaw into two palates and fastening them together

Advantages
Total fastening; does not tie the mouth
Short operation time ?????
Large contact surface between the bone allowing quick fusion of the bones
Disadvantages
Total fastening can be too stressful on the jaw
Possible nerve damage due to jaw division
Relatively long operation time ???????

Intraoral Vertical Ramus (IVRO)

Advantages
No damage to the joints, allowing flexible movement after surgery
Minimal possibility of damage to the nerves
Less swelling and bleeding due to relatively short operation time
Surgical fastening pin, barely visible on x-rays
Disadvantages
The mouth is tied for 2-3 weeks for stabilization as the palate is not fastened
The overlapping portion of the bone may be felt after surgery
Several weeks of physical therapy is required for functional rehabilitation

Who is suitable for single or two-jaw surgery?

  • Two-jaw Surgery
  • Single-jaw Surgery

Those with :

·Severe chin protrusion resulting in significant malocclusion

·Long face, chin protrusion

·Protruding chin with under developed upper chin ???

·Protruding chin with sever asymmetry

·Open bite, chin protrusion

Those with :

·Moderate chin protrusion

·Short profile due to chin depression

·Big or long lower chin

·Moderate facial asymmetry

Dr. K’s Guide to Orthognathic Surgery

  • Orthognathic surgery (jaw correction surgery) is an oral and maxillofacial domain.
  • The jaw correction surgery was first done domestically and internationally in 1950 by an oral surgeon.
  • University dental hospitals and private dental hospitals have been implementing the jaw correction surgery
  • (orthognathic surgery) for more than 60 years. In addition, more than 90% of the thesis related to
  • Orthognathic Surgery (jaw correction surgery) are thesis related to dentistry (oral surgery, orthodontics).
  • An oral and maxillofacial doctor is a doctor who has completed a bachelor’s degree,
  • resident course, full-time doctor course and a post-grad course, has learned professional knowledge
  • and skills regarding oral diseases and jawbone surgery, consulted, and has done surgeries for several decades.
  • Cosmetic surgery is not a course that treats functional and pathological conditions of the jaw.
  • This is a critical point because an orthognathic surgeon must know the anatomy of the oral cavity
  • and the jaw because orthognathic surgery is performed inside the mouth. Moreover,
  • the surgeon must know how to respond to pathological conditions that can occur before or after the surgery.
  • This is why an orthognathic surgeon who has expertise in oral cavity and jaw performs the orthognathic surgery.
  • An orthognathic surgery (jaw correction surgery) must have an accordance of three factors; Aesthetics, function and stability.
  • All three factors are equally important when considering orthognathic surgery, hence should not be overlooked.
  • What must be prioritized more than any new surgical expression is that the surgery must improve the functions
  • The priority of an orthognathic surgery is placed on ensuring the improvement of functions while not damaging the original function.
  • This will result in acquiring a stable and beautiful jaw.

Before & After