Orthognathic Surgery: Purpose, Procedure & Recovery Explained

Orthognathic surgery corrects jaw position when braces alone cannot fix the bite, the airway, or facial balance. The operation typically lasts 1.5–5 hours under general anaesthesia, uses incisions hidden inside the mouth, and most patients return to desk work within two weeks, with the final result visible at 6–12 months.

Quick Summary

Orthognathic surgery — also called corrective jaw surgery — moves the upper jaw, lower jaw, or chin into a planned new position. Surgeons do it when braces alone can't fix a skeletal problem. The procedure is planned in 3D, performed through the mouth, and fixed with titanium plates. Recovery takes around six weeks for daily life and up to twelve months for the final bite and facial contour.

This page walks you through the full picture: why the surgery exists, what it actually corrects, how the day unfolds, the orthodontic work before and after, the real recovery timeline, the risks, the long-term stability, and what orthognathic surgery costs in India. For a deeper dive into the conditions that justify surgery, see our guide on what orthognathic surgery is and who it helps.

The Purpose

Orthognathic surgery exists to correct jaw deformities that braces alone can't fix. The jawbones are the foundation of the face — when they're too small, too large, asymmetric, or positioned too far forward or back, no amount of tooth movement can fully correct the bite, the airway, or the facial proportions. Surgery repositions the bones themselves. The most common reasons surgeons recommend it:

• Severe underbite, overbite, or open bite
• Facial asymmetry that affects chewing or appearance
• Obstructive sleep apnea — see our guide to jaw surgery for sleep apnea
• TMJ disorders caused by jaw position
• Difficulty chewing, speaking, or breathing
• Post-traumatic or post-cancer reconstruction
• Congenital conditions such as cleft lip and palate
• Long-face or short-face growth patterns

The deeper context lives in what orthognathic surgery is. If you're weighing surgery against orthodontics alone, our post on whether braces can fix an asymmetrical jaw lays out where each option stops and starts.

Functional Problems It Solves

The functional gains from orthognathic surgery are usually the reason surgeons recommend it. A jaw that sits in the wrong place forces the teeth, muscles, and airway to compensate — and those compensations break down over time.

Chewing: a severe underbite, overbite, or open bite means the front and back teeth don't meet properly. You can't bite through a sandwich cleanly, you can't grind food efficiently, and your molars wear unevenly. Surgery restores a bite where upper and lower teeth meet in a stable, repeatable way. Chewing efficiency improves within 6–8 weeks for most patients.

Speaking: certain speech sounds — especially sibilants like "s" and "sh" — depend on a precise tongue-to-jaw relationship. When the jaw sits too far back or the open bite is large, lisping and air escape happen. Most patients speak more clearly after recovery than before.

Breathing and sleep: a retruded lower jaw narrows the airway behind the tongue. At night, the airway collapses, and you stop breathing — that's obstructive sleep apnea. Maxillomandibular advancement, a form of orthognathic surgery, moves both jaws forward and opens the airway permanently. It's considered the most reliable surgical treatment for moderate to severe OSA when CPAP fails or isn't tolerated.

TMJ symptoms: when the condyles sit out of position because the jaws don't meet correctly, the joints overwork and degenerate. Correcting the bite redistributes load across both joints.

Aesthetic Problems It Solves

Aesthetic correction isn't cosmetic in the marketing sense — it's structural. A retruded chin, a gummy smile, a long lower face, or a chin that deviates to one side isn't a soft-tissue problem. The bone underneath is in the wrong place. Orthognathic surgery moves the bone. The soft tissue follows.

Common aesthetic concerns that surgery addresses:

• A weak or receding chin (retrognathia)
• A protruding lower jaw (prognathism)
• A gummy smile caused by vertical maxillary excess
• A long-face pattern with lip incompetence
• Visible facial asymmetry at rest or when smiling
• A flat or under-projecting midface

The 3D plan lets you preview the predicted facial change before surgery. Friends and family may not pinpoint what changed — they just say you look better. Our post on whether jaw surgery improves facial appearance goes deeper into the cosmetic outcomes, and our breakdown of the common causes of facial asymmetry helps identify when the issue is skeletal versus soft-tissue.

The Procedure Step by Step

• Pre-op records: cone-beam CT scan, intraoral scans, photographs, and bite registrations are taken. These feed the virtual surgical plan.
• Virtual surgical planning: the surgeon and orthodontist plan the final jaw position in software, often with the help of a planning service. Movements are predicted to within a millimetre.
• Surgical wafers: the plan is printed as a 3D model, and clear acrylic wafers are made on it. These wafers guide the jaw into the exact planned position during surgery.
• Anaesthesia: general anaesthesia through a nasal tube. You're completely asleep and won't feel or remember the operation.
• Incisions: all inside the mouth in the vast majority of cases. No facial scars. A tiny incision under the chin is sometimes added for a genioplasty.
• Osteotomies: precise bone cuts using piezo saws, reciprocating saws, and burs. The most common cuts are the Le Fort I osteotomy (upper jaw), bilateral sagittal split osteotomy (lower jaw), and genioplasty (chin).
• Repositioning: the jaw segment is mobilised, guided into place using the surgical wafer, and fixed with titanium miniplates and screws.
• Closure: the gum incisions are closed with dissolving stitches. No stitches need removal.
• Waking up: in the recovery room, with light elastic guidance between the upper and lower teeth to guide the bite while muscles adapt.

Modern surgery uses virtual planning to predict the result with sub-millimetre accuracy. For a full walk-through from a patient's perspective, see our complete orthognathic patient guide.

Pre-Surgery Orthodontics (6–18 Months)

Orthognathic surgery is rarely a one-day event. Most patients spend 9–18 months in braces before the operation. This phase is called decompensation.

Your natural bite has probably masked the true skeletal discrepancy for years — teeth have tipped, drifted, and over-erupted to find each other. Before surgery, the orthodontist straightens the dental arches and unmasks the real jaw problem. That often makes the face look worse for a few months — the bite gets visibly off, the chin more retruded, or the overbite more pronounced. This is expected. The surgery then corrects what braces alone cannot.

You visit the orthodontist every 4–6 weeks during this phase. Near the end, final records are taken and the surgical plan is finalised. Most patients wear braces for 3–6 months after surgery as well — see the next section.

The Day of Surgery

You arrive at the hospital after an overnight fast. The anaesthetist reviews your records, places an IV line, and walks you to the operating theatre. General anaesthesia is induced. A nasal tube is placed for breathing.

The surgery itself takes 1.5–3 hours for a single jaw and 3–5 hours for double-jaw surgery. You spend additional time in the OR for anaesthesia induction, positioning, and waking up — plan for 3–6 hours total in the theatre complex.

After surgery you move to a recovery room, then to a private ward. Most patients stay one or two nights. You'll have facial swelling, mild nausea from anaesthesia, and some numbness in the cheeks, lips, or chin. Pain is usually described as pressure and tightness rather than sharp pain. Strong painkillers are used for the first few days, then stepped down to simpler medication by the end of week one.

You'll be on a liquid-only diet for the first week. Your surgeon will see you the morning after surgery and again before discharge.

Post-Surgery Orthodontics (3–6 Months)

About 4–6 weeks after surgery, you return to your orthodontist for the final detailing phase. Braces remain on — usually on both arches — for another 3–6 months. The orthodontist fine-tunes the bite, closes any small residual gaps, and makes sure the upper and lower teeth interdigitate cleanly.

Total orthodontic time, both before and after surgery, averages 12–18 months. Some patients finish faster with aligner-based orthodontics; others need longer. Braces come off only when the bite is stable and the surgeon and orthodontist agree the result is locked in. You'll then wear a fixed lower retainer and a removable upper retainer for life — teeth shift with age regardless of whether you had surgery.

Recovery Week by Week

• Week 1: swelling peaks at day 3, then starts to settle. Soft diet only. Most pain managed at home. Sleep propped up. Walk short distances.
• Week 2: swelling clearly better. Stitches dissolve. Most patients return to desk work or school.
• Week 3–4: transition to a soft-chew diet. Most bruising gone. Light cardio resumed.
• Week 4–6: light exercise resumed. Most numbness starts to recover. Return to most normal activities.
• Week 6–8: back to normal chewing. Begin final orthodontic detailing. Visible result largely settled.
• Month 3–6: bite fully settled. Chewing and speech feel natural. Final facial contour emerges.
• Month 6–12: final result visible. Residual numbness usually resolves. Plates fully integrated with bone.

See complete recovery timeline and care tips for a detailed day-by-day guide, and risks and complications of maxillofacial surgery for what to watch for.

Risks & Complications

Orthognathic surgery is a planned, elective procedure performed on healthy patients. Serious complications are uncommon — most published series report major complication rates under 2%. The risks you should know about:

• Nerve numbness: the most common side effect. The lower lip and chin go numb after lower-jaw surgery in most patients. Sensation returns over 3–12 months for the vast majority; about 5–10% have a small persistent patch of altered feeling. Upper-jaw numbness is less common and usually temporary.
• Swelling and bruising: expected, peaks at day 3, and resolves by week 3–4.
• Relapse: small relapse of 1–2 mm happens in some cases. Larger relapse is rare with rigid fixation. Well-planned surgery has 90%+ long-term stability.
• Infection: rare (under 1%) and usually responds to oral antibiotics. Plate infections requiring removal occur in under 1% of cases.
• Non-union: extremely rare; the bones usually heal solidly within 6 weeks.
• Bad split: an unfavourable fracture line during the osteotomy, usually managed in the same operation by extending the cut or using additional fixation.
• Bleeding and airway issues: managed in hospital; very uncommon.

Choosing an experienced surgeon minimises these. Our guide on how to choose the best maxillofacial surgeon in Hyderabad walks through what credentials and case volume to look for.

Results & Long-Term Stability

Long-term outcome data is strong. Studies following patients 5–10 years after surgery show bite stability in 85–95% of cases when the surgery is virtually planned and the case is well executed. The most stable movements are upper-jaw advancements and lower-jaw setbacks. The least stable are large advancements of the lower jaw, where 10–20% of cases show some forward relapse.

What changes permanently:

• Improved chewing, speaking, breathing
• Better facial balance and profile
• Long-term stability: 90%+ when planned well
• Titanium plates stay in for life — they don't need removal unless symptomatic
• Retainers worn forever after orthodontics
• Quality-of-life gains are usually dramatic and permanent

For patients whose primary concern is appearance, see our post on whether orthognathic surgery changes your face, and for those considering facial surgery more broadly, our overview of the best facial cosmetic procedures lays out the full landscape.

Cost & Insurance in India

Orthognathic surgery is reconstructive, not cosmetic, when the primary indication is functional — bite correction, breathing, or speech. Most Indian health insurers cover orthognathic surgery when there's documented functional need, including obstructive sleep apnea.

Approximate out-of-pocket ranges in India, 2026:

• Single-jaw surgery: ₹2.5–4.5 lakh
• Double-jaw surgery: ₹4.5–7.5 lakh
• Orthodontic treatment (12–18 months): ₹80,000–₹2,00,000 extra

Costs vary by city, hospital tier, and case complexity. Insurance pre-authorisation is essential — your surgeon's office typically prepares the medical-necessity documentation. If your plan is denied, an appeal with photographs, scans, and a functional assessment letter usually succeeds.

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