Jaw Surgery (Orthognathic): A Complete Guide for Patients

Orthognathic surgery is the surgical correction of jaw position to align the bite, open the airway, and balance the face. This complete guide walks you through every step of the patient journey — from the first consultation and pre-surgical orthodontics through the operation, recovery, and the final stable result — so you know exactly what to expect.

What Is Orthognathic Surgery?

Orthognathic surgery (from the Greek "orthos" meaning straight and "gnathos" meaning jaw) is the surgical repositioning of the upper jaw, lower jaw, or chin to correct a skeletal discrepancy that braces alone cannot fix. The procedure repositions the jaw bones so the teeth meet correctly, the airway opens, the jaw joints sit in a healthy position, and the face looks balanced. It is performed by a qualified maxillofacial surgeon working in close coordination with an orthodontist, and forms a core part of modern orthognathic treatment planning.

Orthognathic surgery is not a single operation. It is a planned combination of procedures — most commonly a Le Fort I osteotomy on the upper jaw, a bilateral sagittal split osteotomy (BSSO) on the lower jaw, and sometimes a sliding genioplasty on the chin — selected and positioned to address your specific deformity. The aim is three-fold: function, health, and facial harmony.

Who Needs Jaw Surgery? Indications and Common Reasons

You may be a candidate for orthognathic surgery if you have a functional problem, an aesthetic concern, or both, and the underlying cause is a jaw bone discrepancy rather than just the position of the teeth. Most patients are referred by their orthodontist after braces alone cannot deliver a stable, healthy bite.

Functional indications include difficulty chewing or biting food, speech problems that persist after orthodontic treatment, chronic mouth breathing, obstructive sleep apnoea that has not responded to CPAP or lifestyle measures, and jaw surgery for sleep apnoea is now a well-established indication. Patients with temporomandibular joint (TMJ) pain driven by a skeletal deformity often find relief once the jaws are in the correct position.

Aesthetic indications overlap with functional ones. An underbite, overbite, open bite, gummy smile, receding chin, or visible facial imbalance can all be signs that the jaws are not in proportion. You can read more about the underlying causes in causes of facial asymmetry and whether braces alone can fix an asymmetrical jaw.

The most common diagnoses that lead to orthognathic surgery are:

• Class II malocclusion — a receding lower jaw (overbite)
• Class III malocclusion — a prominent lower jaw (underbite)
• Open bite — front teeth do not meet when the back teeth are closed
• Facial asymmetry — one side of the face is different from the other, often from a hemimandibular elongation or condylar overgrowth
• Obstructive sleep apnoea — a retrusive jaw collapses the airway during sleep
• Post-traumatic deformity — after a fracture that was never reduced, or healed in a poor position
• Congenital conditions — cleft lip and palate, hemifacial microsomia, Pierre Robin sequence, and other craniofacial syndromes

Trauma and congenital cases are particularly important: a jaw fracture that healed crooked, or a child born with a small lower jaw and a tongue that falls back into the airway, can both be definitively addressed with orthognathic surgery once growth is complete. See common facial cosmetic surgery procedures for related work on facial balance.

Planning and Pre-Operative Workup

Orthognathic surgery is never an emergency. The best results come from a calm, planned journey, and most of that time is spent before you ever enter the operating theatre. A typical workup takes 9–18 months from the first consultation to the day of surgery.

Step 1: Specialist consultation. Your first visit is a long one. The surgeon will take a full history — chewing, speech, breathing, sleep, joint clicking, sinus issues — and examine the face at rest and in function. Expect a clinical photographs series, a discussion of your goals, and an honest appraisal of what surgery can and cannot do for you.

Step 2: Records and imaging. You will have an OPG (panoramic dental X-ray), a lateral cephalogram, a CBCT or CT scan, study models or intra-oral scans, and a set of clinical photographs. These records let the team measure the deformity, simulate the correction, and design the surgical movement down to the millimetre.

Step 3: Virtual surgical planning (VSP). Modern orthognathic surgery is planned on a 3D workstation. Your CT scan is fused with your dental scans, the jaw movement is simulated, the fixation plates are pre-bent, and an intermediate and final splint is 3D-printed. You will see a prediction of your post-surgery face before you commit. Read more about the planning workflow in purpose, procedure and recovery explained.

Step 4: Pre-surgical orthodontics. Braces go on for 9–18 months before surgery. During this phase the orthodontist decompensates the teeth — moves them into their true positions on the jaw bones — so that on the day of surgery the jaws can be placed in the correct relationship without the teeth fighting each other. Some patients are suitable for a surgery-first approach, where the operation is done before any orthodontic movement; this is selected case by case.

Step 5: Medical optimisation. Stop smoking at least four weeks before surgery, control diabetes and blood pressure, address any active dental infection, and stabilise your weight. These steps measurably reduce the risk of poor wound healing and infection.

Step 6: Pre-anaesthesia review. Within 7–10 days of surgery you will see the anaesthesia team for blood tests, ECG, chest X-ray, and an airway assessment. This is also when you sign consent and confirm the planned movements.

The Day of Surgery

You will be asked to fast from midnight. On arrival, the anaesthetist will place a small intravenous line, administer a pre-medication to relax you, and walk you into the operating theatre. General anaesthesia is administered through a nasal tube (nasotracheal intubation), which leaves the mouth free for the surgical team.

The procedure takes between 1.5 and 4 hours, depending on whether one or both jaws are being moved and on the complexity of the movements. A single-jaw operation usually takes 1.5–2.5 hours; a bimaxillary operation that combines upper and lower jaw surgery with a chin procedure typically takes 3–4 hours.

You will stay in hospital for 1–2 nights. Most single-jaw cases go home the next morning; bimaxillary cases or those with medical conditions usually stay a second night. Your surgeon will see you on rounds, check the occlusion (bite), adjust the guiding elastics if needed, and review your medications before discharge.

Types of Osteotomies

Le Fort I osteotomy (upper jaw). The maxilla is separated from the rest of the face through a cut just above the tooth roots, then moved forward, backward, up, down, or rotated. Used for gummy smiles, midface deficiency, and open bites. All incisions are inside the mouth.

Bilateral Sagittal Split Osteotomy (BSSO, lower jaw). The mandible is split on both sides behind the molars so the tooth-bearing segment can slide forward or backward. Used for the majority of Class II and Class III corrections.

Sliding genioplasty (chin). The chin button is cut and repositioned to refine the profile. Often combined with BSSO when the chin height or projection needs a separate adjustment. Read more in what is orthognathic surgery?.

Plate and Screw Fixation

Once the jaw is in its new position, it is held there with titanium miniplates and screws. Modern fixation is rigid enough that most patients do not need their jaws wired shut. The plates are left in place permanently unless they cause irritation, in which case they can be removed in a short procedure months later.

Recovery: What to Expect Week by Week

Recovery is a phase, not a single event. You will go through predictable stages, and knowing them in advance makes the experience far easier. A detailed day-by-day plan is in complete healing timeline and care tips; here is the short version:

Immediately after surgery. You will wake up in recovery or a high-dependency unit with light elastics between the jaws, an IV drip for fluids and antibiotics, and ice packs on the face. Most patients are moved to a regular ward within a few hours and are up walking that evening.

First week. Swelling peaks around day 3 and then begins to settle. You will be on a liquid diet — smooth soups, milkshakes, protein drinks, lukewarm water. Pain is usually controlled with oral medication by day 2 or 3.

Week 2. Most patients return to desk work, light walking, and normal conversation. Swelling is visibly reducing. The elastics are usually removed at the 10–14 day review.

Weeks 3–6. Soft-chew diet begins (idlis, khichdi, soft pasta, scrambled eggs). Light gym work resumes around week 4. Numbness in the cheeks, lips, or chin begins to recover.

Month 3. The orthodontic finishing phase is in full swing. Final detailing of the bite takes 3–6 months after surgery.

Month 6 to 12. Final result, last traces of swelling gone, sensation mostly back, bite stable. Braces are removed, retainers fitted, and you enter the long-term retention phase.

Life After Surgery: Final Outcome and Retention

Patients consistently report that orthognathic surgery changes their daily life in ways they did not fully anticipate. Eating is easier, speech is clearer, sleep is deeper, and the constant background effort of compensating for a bad bite quietly disappears. Many patients also describe a confidence lift that mirrors the visible change in their profile — you can read more in can jaw surgery improve facial appearance?

The benefits patients most often describe in follow-up are:

• Easier chewing and biting, with no joint strain
• Clearer speech, especially for "s", "t", and "f" sounds
• Better breathing at night, with reduced snoring and daytime fatigue
• Reduced or resolved TMJ pain and clicking
• A more balanced, harmonious facial appearance
• Improved self-confidence in work and social settings

Retention is lifelong. Teeth move with age whether or not you have had surgery, so a bonded lower retainer and a removable upper retainer worn at night is the standard recommendation. The bone itself is stable once healed, but the teeth still need to be held.

Risks and how we prevent them. Like any operation, orthognathic surgery has risks — bleeding, infection, nerve numbness, relapse, and the small possibility of non-union. In experienced hands major complication rates remain under 5%, and most numbness is temporary. The full list and how each is prevented is in side effects, risks, and prevention.

Cost Considerations in India

The cost of orthognathic surgery in India depends on whether one or both jaws are being moved, the hospital tier, the city, and the length of stay. Single-jaw surgery in a mid-tier hospital in a Tier 2 city is meaningfully cheaper than bimaxillary surgery in a premium corporate hospital in a metro. Most quoted packages include the surgical fee, anaesthesia, hospital stay, plates and screws, and routine follow-up; pre-surgical orthodontics, post-surgical orthodontics, and any revision work are usually billed separately. A personalised quote follows your records review and virtual surgical planning.

Choosing the Right Surgeon and Hospital

Orthognathic surgery is a long, planned journey — choose a team you trust to walk it with you. Look for a surgeon who is a qualified maxillofacial surgeon with a fellowship or specific training in orthognathic surgery, performs the operation regularly (not occasionally), works in a hospital with a strong anaesthesia and ICU setup, and uses 3D virtual surgical planning as standard. A practical checklist is in how to choose the best maxillofacial surgeon in Hyderabad.

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