Jaw surgery, also known as orthognathic surgery, is a specialized surgical procedure designed to correct abnormalities in the alignment, position, or development of the upper and lower jaws. It aims to improve bite function, chewing ability, facial symmetry, and overall oral health, while also enhancing facial appearance.
Jaw misalignment can result from genetic factors, developmental differences, congenital conditions, or facial injuries. In some cases, these problems cannot be corrected through orthodontic treatment alone, making surgery an important option for restoring proper jaw function and facial balance.
Who May Need Orthognathic Surgery?
Jaw surgery may be recommended for individuals experiencing functional or structural problems such as:
- Severe overbite or underbite: Significant differences in the position of the upper and lower jaws.
- Open bite: A condition in which the upper and lower teeth do not meet properly when the mouth is closed.
- Facial asymmetry: Uneven jaw development that affects facial balance.
- Difficulty chewing or biting: Problems caused by improper alignment of the teeth and jaws.
- Certain speech difficulties: Problems related to jaw positioning that may affect articulation.
- Jaw abnormalities: Structural changes caused by congenital conditions, developmental differences, or injuries.
Not every bite problem requires surgery. An oral and maxillofacial surgeon and an orthodontist can determine whether orthodontic treatment alone is sufficient.
How Is Jaw Surgery Performed?
Orthognathic surgery is carefully planned according to the patient’s facial anatomy, dental alignment, and specific functional needs.
1. Consultation and treatment planning
Before surgery, the specialist evaluates the patient’s bite, facial structure, medical history, and oral health.
Diagnostic tools may include dental X-rays, three-dimensional imaging, digital scans, and orthodontic assessments.
Many patients require orthodontic treatment before and after surgery to achieve proper alignment of the teeth.
2. Anesthesia and surgical incisions
Jaw surgery is performed under general anesthesia.
In most cases, the surgeon makes incisions inside the mouth, helping minimize visible external scarring.
3. Jaw repositioning
Depending on the patient’s condition, the surgeon may reposition the upper jaw, lower jaw, or both.
The jawbones are carefully divided and moved into their planned positions to improve the bite and facial alignment.
4. Bone fixation
Once the jaws have been repositioned, the surgeon typically secures the bones using specialized titanium plates and screws to maintain stability during healing.
5. Recovery and follow-up
After surgery, patients receive instructions regarding diet, oral hygiene, medications, and physical activity. Follow-up appointments help monitor healing and jaw alignment.
Main Benefits of Orthognathic Surgery
Improved bite and chewing function
Correcting jaw misalignment can make biting and chewing more comfortable and efficient.
Better facial symmetry and balance
Repositioning the jaws may improve the proportions of the lower and middle face, creating a more harmonious appearance.
Improved speech function in selected cases
For patients whose speech difficulties are related to jaw structure, surgery may contribute to better articulation, although additional therapy may sometimes be necessary.
Long-lasting structural correction
Orthognathic surgery can provide lasting improvements in jaw alignment and facial structure, particularly when combined with appropriate orthodontic treatment.
Potential improvement in breathing
In selected patients, certain jaw advancement procedures may help address airway obstruction, including some cases of obstructive sleep apnea.
Recovery After Jaw Surgery
Recovery depends on the complexity of the procedure and the patient’s individual healing process.
Swelling, bruising, discomfort, and temporary difficulty opening the mouth are common during the initial recovery period.
Patients may need to follow a liquid or soft-food diet for several weeks while the jawbones heal.
Many people gradually return to routine activities within a few weeks, although complete bone healing and final results may take several months.
Risks and Possible Complications
Like any major surgical procedure, orthognathic surgery carries potential risks, including:
- Bleeding, infection, or delayed healing.
- Temporary or persistent numbness of the lips, chin, or other facial areas.
- Changes in bite alignment or unexpected jaw positioning.
- Possible relapse or movement of the jaws after surgery.
- Complications associated with general anesthesia.
- The need for additional orthodontic treatment or, occasionally, further surgery.
A thorough consultation is essential to understand the expected benefits, limitations, and potential risks.
Are the Results of Jaw Surgery Permanent?
Orthognathic surgery aims to provide long-term improvements in jaw alignment, oral function, and facial balance.
Although the structural corrections are generally stable, results depend on factors such as the original jaw abnormality, surgical technique, orthodontic treatment, and individual healing.
Maintaining good oral hygiene and following the specialist’s recommendations can help support long-term results.
Is Orthognathic Surgery Right for You?
Jaw surgery can be an effective treatment for complex jaw misalignment and bite problems that cannot be adequately corrected with orthodontics alone.
By improving the relationship between the upper and lower jaws, the procedure can offer meaningful functional benefits while enhancing facial proportions.
Before considering surgery, consult a qualified oral and maxillofacial surgeon, ideally in coordination with an orthodontist, to determine the most appropriate treatment plan for your needs.
