In short
A fractured jaw is diagnosed by clinical examination and CT imaging, then treated by repositioning the bone and fixing it with titanium plates and screws, or occasionally by wiring the jaws together. The priority is restoring the bite exactly, because a jaw that heals misaligned permanently changes chewing.
The short version
- The strongest early sign is that your teeth no longer meet the way they did — more reliable than pain or swelling.
- Modern treatment uses titanium plates, which usually allows normal mouth opening within days instead of weeks of wiring.
- Delay matters: fractures become progressively harder to reposition after roughly ten to fourteen days.
Facial injuries arrive in a particular way: a road accident, a fall, a sports collision, an assault. The person is shaken, there is swelling and bleeding, and the immediate concern is quite reasonably whether anything serious has happened.
Jaw fractures are frequently missed in that first assessment, particularly when attention goes to more visible injuries. Understanding what to look for matters, because the window for straightforward treatment is not indefinite.
The sign that matters most
Pain and swelling after a facial injury tell you very little — both occur with simple bruising. The sign that actually indicates a fracture is a change in your bite.
If your teeth meet differently from how they met before, even by a small amount, that means the bones carrying those teeth have moved. Patients describe it as the jaw feeling off, or only the back teeth touching, or the jaw sitting to one side. It is the single most reliable indicator.
Other signs worth knowing: inability to open the mouth fully, numbness of the lower lip or chin which suggests the nerve within the mandible has been involved, a step or gap felt along the gum line, bleeding from between two teeth with no obvious wound, loose or displaced teeth in a segment that moves together, and visible asymmetry once initial swelling settles.
Why delay makes it harder
Bone begins organising and healing almost immediately. In the first week, fragments can usually be repositioned without difficulty. By around ten to fourteen days, early union means the fracture must be mobilised again before it can be set correctly — a larger procedure with a longer recovery.
This is the main reason facial trauma is prioritised over routine appointments. It is also why a jaw that “feels a bit off” after an accident deserves an X-ray that week rather than a wait-and-see fortnight.
Diagnosis
Examination comes first: how the teeth meet, where tenderness and steps are, mouth opening, nerve sensation, and whether any segment of teeth moves as a block.
Imaging confirms it. An orthopantomogram gives a broad view of the mandible. A CT scan is the standard for anything involving the midface, cheekbone or eye socket, because those fractures are three-dimensional and cannot be judged from a flat film. The scan determines whether surgery is needed at all, and if so the approach.
Not every fracture needs operating on. An undisplaced fracture with an intact bite may heal perfectly well with a soft diet and close monitoring, and that option should be presented where it genuinely applies.
How fixation works
Where surgery is needed, the principle is simple: put the bone back exactly where it was and hold it there while it heals.
Exactly means by reference to your bite. The teeth are the guide — the jaws are brought into the position where the teeth interdigitate correctly, temporarily secured, and only then are the bone fragments plated. Getting this sequence right is what separates a jaw that works afterwards from one that technically healed.
Titanium plates and screws are then applied across the fracture line. Most mandibular fractures are approached from inside the mouth, leaving no visible scar. Some sites require a small external incision, placed in a skin crease or within the hairline.
The rigidity of plate fixation is what allows early movement — the reason jaws are no longer routinely wired shut for six weeks.
Recovery, week by week
First week. Swelling peaks around day two to three and then declines. Liquid and very soft diet. Pain is managed with prescribed medication and is generally less than patients expect. Meticulous mouth rinsing is essential, particularly where the incision was inside the mouth.
Weeks two to three. Swelling largely resolved, sutures removed, soft diet continues. Mouth opening improves steadily. Numbness of the lip, if present, may begin to change as the nerve recovers.
Weeks four to six. Bone union progresses. Diet advances gradually under instruction. A review X-ray confirms position and healing.
Beyond six weeks. Normal chewing usually returns around weeks six to eight. Contact sports should wait roughly three months. Where the bite still feels slightly off, minor adjustment or orthodontic input may be needed — far easier to address at this stage than years later.
Fractures of the rest of the face
The mandible is the most frequently fractured facial bone, but it is not the only one, and the others present differently.
A cheekbone fracture flattens the prominence of the cheek, often with numbness over the cheek and upper lip, a step felt at the orbital rim, and sometimes double vision. Because swelling masks the flattening for a week or two, these are commonly noticed late.
An orbital floor fracture can trap the muscle that moves the eye, producing double vision on looking up. This needs ophthalmological assessment alongside surgical planning, and is one of the few facial fractures where urgency is measured in days.
A nasal fracture is the commonest of all and is often best reduced within the first week or two, before it sets.
Midface fractures separating the upper jaw from the skull base are high-energy injuries, usually from road accidents, and are managed in a hospital setting alongside the rest of the patient’s injuries.
Children are different
A child’s jaw fracture is not a scaled-down adult one. Bone is more flexible, so greenstick fractures are common and may be missed. More importantly, the growth centre at the condyle sits at the top of the mandible, and injury there can restrict subsequent jaw growth, producing asymmetry that appears years after the accident.
Children also have developing tooth buds within the bone, which constrains where plates and screws may safely be placed. Treatment is therefore more conservative where possible, and follow-up continues well beyond the point the fracture has healed — often until growth is complete.
Any facial injury in a child that changes the bite, limits opening, or produces jaw pain in front of the ear deserves assessment even when it looks minor.
What a good outcome means
Not the absence of a scar. It means your teeth meet as they did before, you can open fully, chewing is unrestricted, and your face is symmetrical. A fracture that unites in the wrong position still shows up as a healed fracture on an X-ray while leaving the patient unable to chew properly — which is why bite alignment, not bone appearance, is the measure that matters.
Facial trauma and jaw fractures are managed by Dr. Tasveer Fatima, whose MDS training included senior residency at the KGMU and SGPGIMS trauma centres in Lucknow. For any facial injury, call the clinic directly rather than booking online so the team can prepare for immediate assessment, and see our emergency guidance for what to do on the way in.
Frequently asked questions
The most reliable sign is a changed bite — your teeth meeting differently from before, even slightly. Others include inability to open fully, numbness of the lower lip, a step or gap felt along the gum line, and bleeding from the gum between teeth. A bruise does not change how your teeth meet. Any of these after facial injury needs imaging.
Much less often than it used to be. Titanium plate fixation holds the bone rigidly, so most patients can open their mouth within a few days and manage a soft diet. Wiring is still used for certain fracture patterns, and sometimes briefly during surgery to establish the bite before plates are applied.
Usually not. Titanium is well tolerated and plates are generally left permanently. Removal is considered only if a plate becomes infected, is palpable and uncomfortable, or in growing children. They do not set off airport security scanners.
Bone union takes around six weeks, with soft diet for most of that period. Swelling settles over two to three weeks. Returning to normal chewing is typically six to eight weeks, and contact sports should wait around three months. Numbness of the lip, if present, may take several months to resolve.
Worried about any of this?
An article cannot examine your mouth. Call and describe the problem — we will tell you honestly whether you need to be seen urgently or whether it can wait.