Orthognathic Surgery vs Cosmetic Jaw Contouring: How to Choose
These two operations are often listed side by side as if they were two ways of doing the same thing, and they are not. Orthognathic surgery changes how the jaws meet: it corrects a bite relationship, and an orthodontist is part of the plan. Cosmetic jaw contouring changes the width and the shape of the jaw angle, and it does not alter the bite at all. A patient who needs the first is not served by the second, and a patient who wants the second does not need the first. This site sets out what each operation is for, which finding leads to which, and where the honest answer is neither.
Reviewed by Tongchun Mao, MD, Deputy Director and Head of Aesthetic Surgery at Chongqing West District Hospital. No result is guaranteed. Both operations work near the nerve that supplies the lower lip, both carry bleeding and asymmetry risk, and contouring does not correct a bite.
Are you asking about the bite, or about the outline?
Most patients arrive with a description of the outline: a jaw that is too wide, too square, too heavy at the angle, or asymmetric. Some arrive with a bite they have been told about, or with a chin that sits forward or back. Those are two different problems, and the first thing an assessment does is decide which one is present, because the operations that address them are not interchangeable. A bite relationship is a functional question: how the upper and lower teeth meet, whether the lower jaw sits forward or back, and whether the way the jaws meet causes difficulty with chewing, speaking or closing the lips. Changing it is planned around the teeth and the bone together, over more than one phase, with an orthodontist involved throughout. The outline is a shape question: the width of the jaw, the angle where it turns, and how that reads against the rest of the face. Changing it is a single operation on bone, and it leaves the bite where it was. A patient whose real complaint is the width of the jaw angle does not have a bite problem that needs correcting, and a patient whose bite does not meet correctly does not have the problem contouring addresses.
A bite relationship, and a jaw outline
The two operations act on different things and answer different questions. Reading the two columns as alternatives for one person is the mistake this site exists to correct.
Orthognathic surgery changes how the jaws meet
The upper jaw, the lower jaw or both are cut and repositioned so that the teeth meet correctly. It is a functional operation: the aim is a bite relationship that works, and the change to the appearance of the lower face follows from the bone being in a different place. It is planned with an orthodontist, and it is usually one part of a treatment that runs over more than one phase.
Jaw contouring changes the width and the angle
The jaw angle is reduced or reshaped so that the lower face reads narrower or less square. It is an operation on bone, and it does not move the jaw or change how the teeth meet. It is a single operation with a single recovery, planned from the outline of the face and the position of the angle beneath it rather than from the bite.
Why they are not alternatives
Because a patient rarely needs both for the same reason. A bite that does not meet correctly is corrected by moving the jaws, and that is a functional need. A jaw angle that is wide is reduced by contouring, and that is a shape concern. Where a patient has both a bite problem and a wide angle, the two are handled as two separate questions in a deliberate order rather than as a choice between two operations.
What leads each plan
The bite plan is led by the relationship of the teeth and the jaws, and it is agreed with an orthodontist before any operation. The contouring plan is led by the outline: the width of the face at the angle, the position of the angle in relation to the ear and the chin, and how the soft tissue lies over it. One plan starts with function and the other starts with shape, and they are read from different records.
What each asks of a patient in time
Orthognathic surgery is part of a course of treatment that includes orthodontics before and after the operation, which means appointments over many months and a soft diet while the bone heals. Contouring is a single operation with its own recovery and no orthodontic phase: the swelling settles over weeks and the diet returns to normal sooner.
What each can and cannot do
Orthognathic surgery can change the bite relationship and, in doing so, change the profile. It does not narrow a wide jaw angle. Contouring can narrow the lower face and soften a square angle. It cannot change the bite, and it does not correct a jaw that sits forward or back. Neither operation changes the teeth, and neither replaces the other.
Two calendars that do not line up
Orthognathic surgery is not a single recovery, and describing it as one understates it. Orthodontic treatment runs before the operation, the operation is performed under general anaesthesia with an inpatient stay, and orthodontic treatment continues afterwards. The swelling of the lower face is at its most conspicuous in the first days and settles over weeks, and a soft diet is usual for a period measured in weeks while the bone heals. Speaking and ordinary facial expression are uncomfortable at first. The settled result is judged months later, and the orthodontic phase continues past that point. Jaw contouring is one operation, usually under general anaesthesia and often without a night in hospital. The swelling over the angles is at its most conspicuous in the first days and settles over weeks; eating returns to normal sooner, because the bite has not been changed and the bone being reshaped does not carry the teeth. The two calendars are not comparable in length, and the number of appointments involved differs even more than the recovery does. A patient comparing them on downtime alone is comparing two different courses of treatment.
A stable bite relationship, and a shape judged against an ageing face
The two results do not age in the same way, and the comparison is uneven for a reason worth understanding. After orthognathic surgery, the jaws are fixed in a new relationship and the bite is expected to remain stable, held by the teeth meeting as they were planned to. Relapse is a recognised possibility in any operation that changes a jaw relationship, which is why the plan is made with an orthodontist and reviewed over time, and why an unstable bite is settled before the operation rather than after it. Within that limitation, a corrected bite is expected to hold. After contouring, the bone that has been reshaped does not grow back, so the change itself is lasting. What changes is the face around it. Soft tissue loses volume and descends with age, the jaw changes, and proportions that made a narrower angle read well at one point may read differently later. A shape result is therefore judged against a face that keeps moving, which is a different kind of durability from a bite relationship that is expected to stay where it was put. Neither result stops the ageing process.
What can go wrong on each side
With orthognathic surgery: injury to the nerve that supplies sensation to the lower lip and chin, which usually improves and can be lasting; bleeding, and the swelling that follows it; relapse, where the bite relationship moves from where it was planned; problems with the way the bone heals; infection; difficulty with the airway in the period around the operation; and the risks of a general anaesthetic and an inpatient operation. With jaw contouring: injury to the nerve in the same region, described in the same terms; bleeding and swelling over the angles; asymmetry, where the two sides do not match; an unsatisfactory contour, including a step that can be felt; infection; and the risks of the anaesthetic and the operation. A further operation is possible after either. Neither list is short, and the two are different rather than unequal: the bite operation adds the risks of moving the jaws and of the orthodontic course around it, and the contouring operation adds the risks of reshaping bone that carries no teeth and of a result judged by eye.
Reversing a bite correction, and revising a contour
Neither operation is undone by removing anything, and what revision means differs between them. Reversing a bite correction means operating again to move the jaws back, which is a further orthognathic operation with a further healing period and a further orthodontic course attached to it. It is a substantial undertaking, and it is considered when a bite relationship has not held or when the result is not one the patient can accept. Revising a contoured jaw is also a further operation, and it is a more contained one, because the bone being reshaped carries no teeth and the bite relationship is not involved. It has limits: bone that has been reduced cannot be put back, so a revision can usually refine a contour rather than restore what was there before, and the options narrow with each operation. A patient should hear both of those plainly before the first operation rather than after it, because the reversibility of the two is not the same and the difference does not favour either.
A two-phase course against a single operation
For orthognathic surgery, the total is driven by the course rather than by the operation: the orthodontic treatment before and after it, the imaging and planning done jointly by the surgeon and the orthodontist, the operation itself, the inpatient stay and the anaesthetic, and the follow-up over the months that follow. Appointments are spread over a long period, and the total is therefore built from many visits rather than one event. For contouring, the total is driven by the operation and the surgeon’s time: the theatre and the anaesthetic, whether a night in hospital is needed, and the follow-up the recovery requires. It is a single commitment rather than a course. The two patterns are different in shape rather than in size, and a further operation is possible after either. This site quotes no figure and no range, because a total quoted before an examination describes a price list rather than a patient, and because which operation is proposed at all should follow the finding rather than the cost.
Two different questions: bite correction and jaw contouring
The two operations compared on what each changes, what leads the plan and what each asks of a patient. Both columns carry the same weight, and the note below the table is the point of the whole site.
The two questions, in eight parts
Each guide takes one part of the decision: why these are not alternatives for the same person, who each operation suits, the assessment that separates a bite problem from a shape problem, the two recovery calendars, how each result holds, the risks both carry, what revision means on each side, and the cases where the answer is the muscle, the fat or the teeth rather than the jaw.
Jaw Surgery or Contouring? They Answer Different Questions
One operation corrects how the jaws meet and involves an orthodontist. The other changes the width and shape of the jaw angle. They are not alternatives.
Read the guide →Who Needs a Bite Corrected, and Who Wants a Narrower Jaw
A bite that does not meet correctly is a functional finding; a wide or square jaw angle is a shape finding. They are assessed differently and answered differently.
Read the guide →The Assessment That Separates a Bite Problem From a Shape Problem
The examination establishes how the teeth meet, what the jaw angle is made of and where the width comes from, before either operation is named or planned.
Read the guide →Two Recovery Calendars: Orthognathic Surgery and Contouring
Orthognathic surgery brings orthodontics before and after the operation and a soft diet while bone heals. Contouring does not, and the two calendars differ.
Read the guide →How Long Each Jaw Result Holds, and Why the Comparison Is Uneven
A corrected bite relationship is expected to stay stable; contoured bone does not grow back, and the shape is judged against a face that keeps ageing.
Read the guide →Nerve Injury, Bleeding and Relapse in Both Jaw Operations
Both operations work near the same nerve and both carry bleeding and swelling risk. What differs is the route taken and the consequences of each complication.
Read the guide →Start with an assessment, not a decision
Arrange an assessment. The bite and the jaw outline are examined separately at it, and we will explain which question each operation answers and what the other one would require.
Frequently asked questions
Can I have jaw contouring instead of orthognathic surgery?
Only if contouring addresses what is actually wrong. If the bite does not meet correctly, contouring leaves that untouched, because it reshapes the jaw angle without moving the jaw or the teeth. If the complaint is a wide or square angle and the bite is normal, contouring is the operation that addresses it and orthognathic surgery would not be proposed. The two are chosen by the finding, not by preference.
Does orthognathic surgery change how wide my jaw looks?
It changes the position of the jaws, and the appearance follows from that. It does not narrow a wide jaw angle, which is a separate shape question with its own operation. Where a patient has both a bite relationship that needs correcting and an angle that reads wide, those are handled as two questions in a deliberate order rather than as a choice between two operations.
Why does orthognathic surgery involve an orthodontist?
Because the teeth have to meet correctly after the jaws are moved, and that is planned rather than hoped for. Orthodontic treatment usually runs before the operation to prepare the bite and after it to finish it. That is why the treatment is described as running over more than one phase, and why the number of appointments involved is much larger than for a single operation.
How many visits does each option involve?
Contouring involves an assessment, the operation and follow-up over the weeks after it. Orthognathic surgery involves orthodontic appointments over many months before and after the operation, in addition to the surgical assessments and the follow-up. The two differ in the number of appointments as well as in the length of the recovery, and that belongs in the decision.
Can jaw contouring fix a bite problem?
No. Contouring reshapes the jaw angle and does not move the jaw or change how the teeth meet. A bite that does not meet correctly is corrected by repositioning the jaws with an orthodontist involved. Treating the outline of a jaw while leaving a bite problem unassessed leaves the functional complaint exactly where it was.
Who reviews the medical content on this site?
Every guide is medically reviewed by Tongchun Mao, MD, Deputy Director and Head of Aesthetic Surgery at Chongqing West District Hospital, and the review date appears on each article. This site names no product, quotes no price, guarantees no outcome, and states plainly that contouring does not correct a bite and that neither operation changes the teeth.
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