How Long Does a Broken Jaw Take to Heal? The Full Timeline

A broken jaw usually reaches basic bone healing in about six weeks, but total recovery has several clocks: a soft or no-chew diet commonly lasts around six weeks, jaw fixation may last up to six weeks, and bite, mouth opening, tooth health, or lower-lip sensation can take longer. The fracture pattern, treatment, infection status, and follow-up imaging determine when a clinician can safely clear chewing and normal activity.

That six-week answer can mislead a patient who expects every part of recovery to finish together. Bone may unite while the jaw remains stiff, a nearby tooth develops trouble, or numbness recedes over months. Your bite is an early alignment test that deserves attention now.

What parts add up to the total healing time?

Broken-jaw recovery is a sequence rather than one finish date. The British Association of Oral and Maxillofacial Surgeons (BAOMS) tells patients that the lower jaw takes around six weeks to heal after plate-and-screw repair and that a relatively soft diet is needed during that period. Six weeks is therefore a reasonable estimate for basic bony healing in an uncomplicated adult case; it is not automatic permission to chew hard food or return to contact sport.

The practical timeline usually contains these overlapping parts:

1. During the first days, care addresses the airway, bleeding, swelling, wounds, and the way the teeth meet. BAOMS says its described lower-jaw operation usually means one night in hospital and an X-ray before discharge the next day.
2. Through roughly week six, the repair must be protected from chewing forces. BAOMS uses about six weeks of relatively soft food after plate fixation. A person in maxillomandibular fixation (MMF) needs liquid or semi-liquid food for as long as the jaws are immobilized.
3. Movement may begin earlier than chewing. With stable internal fixation, AO encourages prescribed jaw exercises as soon as the surgeon allows; closed treatment restricts movement longer.
4. Bite checks and imaging decide whether the calendar matches the biology. AO calls for postoperative X-rays within the first days and, after uncomplicated open reduction and internal fixation (ORIF), another study at 4–6 weeks.
5. Sensation and dental follow-up extend beyond union. The lower lip and chin can remain numb, while a tooth near the fracture may lose vitality later.

Smoking, diabetes, poor nutrition, infection, missed follow-up, another impact, and a fracture broken into several pieces can slow progress. Ask which clock has cleared: bone, bite, movement, diet, nerve, or teeth.

Which fracture patterns and treatments change the timeline?

A linear, nondisplaced fracture may be managed as an outpatient with a soft diet, pain control, and urgent specialist follow-up. StatPearls describes that pathway for linear, nondisplaced, and greenstick injuries. Displacement, instability, multiple sites, an open wound into the mouth, damaged teeth, or fragmentation can change the operation and recovery.

Location matters. Body and angle fractures cross tooth-bearing bone and may affect the inferior alveolar nerve. A condylar fracture lies near the temporomandibular joint (TMJ), where restoring movement is especially important. Muscle pull holds a favorable fracture together and separates an unfavorable one. The scan, bite, dentition, fracture direction, and patient's ability to follow care guide treatment.

Closed treatment uses the teeth as a guide and holds the jaws together with wires or elastics. The AO Foundation's protocol for a simple mandibular body fracture places heavy elastics or wires for four weeks, then lighter training elastics with movement and a soft or blenderized diet. It says MMF is usually maintained for no more than six weeks, while arch bars may remain for 6–8 weeks. Those figures describe that protocol, not a universal prescription.

ORIF restores alignment and secures it with plates and screws. Stable fixation can permit earlier movement and may avoid prolonged rigid MMF, although the bone still needs protection. The strongest argument for treating six weeks as a firm endpoint rests on immediate plate stability and the patient leaflet's six-week estimate. Both points are true. They do not establish adequate union, a correct bite, and safe chewing force on day 42. Examination and imaging do.

How should you eat and clean your mouth without disturbing the repair?

Protecting the fracture and preventing weight loss belong in the same plan. A no-chew texture must pass without biting or grinding; “soft” is no license to test the repair with crusty bread, nuts, steak, or gum.

1. Follow the fixation plan exactly. Do not cut wires, remove elastics, or change their pattern unless your surgical team taught you to do so. If your jaws are fixed, keep the emergency-release instructions and equipment your team supplied where you can reach them; vomiting or choking needs the plan they gave you.
2. Match food texture to the repair. Smooth soups, yogurt, fortified milk alternatives, blended beans, suitably prepared eggs, and nutrition drinks can carry protein and energy without chewing. Avoid alcohol and tobacco.
3. Clean accessible teeth and hardware with the recommended soft brush. AO advises cleaning teeth and arch bars and using prescribed chlorhexidine rinse at least three times daily. Do not aim a water jet at an incision, and stop the rinse when directed because chlorhexidine can stain teeth.
4. Monitor nutrition rather than relying on appetite. AO advises weekly weight checks during MMF. Report continuing weight loss, dizziness, too little urine, inability to take fluids, or repeated vomiting. A dietitian can adjust calories and texture.
5. Keep every bite, wound, elastic, and imaging appointment. Hardware that feels loose, a wound that opens, or food trapped where you cannot clean it needs the surgical team's advice rather than a home adjustment.

I cannot personally vouch for drinking through fixed jaws; I have not lived that recovery. I can vouch for serial evidence. Weekly weight and a bite checked at each visit reveal decline earlier than the impression that eating is “going okay.”

Which milestones show that the jaw is healing well?

Useful healing restores alignment and function without infection. Pain and swelling should trend down, the fracture remain stable, wounds close, and teeth meet as planned. Opening and side-to-side movement should return under the treatment plan. A good-feeling day cannot establish union.

Mouth opening is measured as maximum interincisal opening: the distance between the edges of the upper and lower front teeth at the widest comfortable opening. In its postoperative ORIF guidance, the AO Foundation sets a typical goal of 40 mm by four weeks after surgery. That number is a rehabilitation target in that protocol, not an instruction to force an injured jaw open. Condylar injuries, pre-existing limitation, pain, and the surgeon's timing can justify a different target.

The imaging milestone is equally concrete. AO recommends films within the first postoperative days and at 4–6 weeks in an uneventful ORIF course. In closed treatment, it recommends follow-up imaging before MMF is released. The image checks alignment and hardware; the clinical exam checks matters an image cannot settle alone, including bite, tenderness, wound condition, functional movement, and symptoms.

Sensation deserves its own line on the follow-up record. A 2021 prospective cohort in the Journal of the Korean Association of Oral and Maxillofacial Surgeons examined 293 fractures distal to the mandibular foramen and found inferior alveolar nerve dysfunction in 56.3% before treatment. At six months, 23.9% still had some dysfunction. Those rates come from one cohort and cannot predict an individual's recovery, but they show why lower-lip or chin numbness should be documented, tested, and followed rather than dismissed.

Does a changed bite settle, or does it need prompt adjustment?

A new or worsening bite change after injury or repair needs prompt contact with the treating surgeon. Swelling and protective muscle spasm can temporarily alter how the teeth meet, and light guiding elastics may help when the surgeon confirms that cause. A displaced bone segment, inadequate reduction, or failing hardware will not be corrected by waiting for swelling to fade.

AO's postoperative guidance says imaging should establish the cause of malocclusion. Training elastics may help edema- or muscle-related change, while a bony problem or hardware failure can require revision surgery. Do not “find” the old bite by clenching repeatedly. Record which teeth touch first, whether the gap is new, and when it changed, then call.

Around 2018, I stopped advising readers to watch an off bite for several days when swelling seemed the obvious explanation. The appearance of swelling cannot identify the source of malocclusion, and the treatment paths split sharply once hardware or bone position is involved. A same-day call to the surgical service is the safer position; the team can decide whether the review itself is immediate.

Malocclusion is a measured outcome, not a remote possibility. A 2026 multicenter TriNetX study in Laryngoscope Investigative Otolaryngology matched 2,338 adults with condylar or subcondylar fractures. Within one year, malocclusion was recorded in 10.8% after closed reduction and 6.70% after ORIF. Those rates apply to the studied diagnoses and database, rather than every broken jaw, but they put a real scale on follow-up.

How is a mandibular fracture different from a TMJ injury?

Both a mandibular fracture and a TMJ injury can cause pain near the ear, tenderness, restricted opening, and deviation. A fracture disrupts bone continuity and may create a changed bite, a palpable step, loose teeth, oral bleeding, or lower-lip numbness. A TMJ soft-tissue injury can affect the capsule or disc without a bone break.

Pain location alone cannot separate them. A blow to the chin may injure the joint, fracture the condyle, or do both. Clicking also fails as a fracture test because it can predate the accident. Fracture-related bite change and suspected instability require imaging-led evaluation, while persistent soft-tissue derangement of the TMJ may later call for a joint-focused examination and different imaging.

The American College of Radiology's Appropriateness Criteria: Imaging of Facial Trauma Following Primary Survey treats trismus or malocclusion after trauma as signs of suspected mandibular injury and rates maxillofacial CT without intravenous contrast “usually appropriate” for initial imaging. That is why it is risky to relabel painful opening as “just TMJ” before the mandible has been evaluated.

Which symptoms need urgent or emergency review?

Breathing difficulty, choking, uncontrolled bleeding, rapidly increasing facial or floor-of-mouth swelling, or inability to handle saliva is an emergency. MedlinePlus notes that a broken or dislocated jaw can cause airway blockage and directs patients to emergency care because breathing problems or bleeding may occur. Use local emergency services rather than driving yourself if breathing is affected.

Contact the oral and maxillofacial team promptly for fever or chills, swelling that increases after it had begun to improve, pus or foul drainage, worsening pain, a new bad taste, a wound opening, or loose fixation. Cleveland Clinic lists breathing difficulty and infection signs such as fever and chills among reasons to contact a provider. The urgency rises when fever and swelling occur together.

A newly changed bite, jaw movement at the fracture, broken wire or plate sensation, or numbness that appears or worsens also needs prompt review. Numbness can come from the original nerve injury and can recover slowly; a new change after repair still belongs in the clinical record. After any fresh blow to the healing jaw, seek reassessment even if the skin looks unchanged.

What should you monitor after the bone has united?

Track four functions beyond the union visit: how the teeth meet, maximum comfortable opening, lower-lip and chin sensation, and the condition of teeth near the fracture. Note pain with chewing, deviation, locking, clicking that began after injury, or an area of numbness that expands. Dental review matters because AO warns that teeth near fracture lines can lose vitality later and may need periapical imaging or treatment.

Consistency beats memory. Measure opening only after the clinician has cleared the exercise, use the same front teeth and method, and record it no more often than the care team recommends. Take bite concerns back to a dentist or surgeon; photographs can document visible change but cannot diagnose union or hardware position.

Daily measuring can turn normal variation into alarm and tempt a patient to force a better number. That is the fair objection to tracking, and I agree. A measurement taken after pain medicine may differ from one taken when muscles are tired. The answer is a calm interval and a fixed method, often weekly if the clinician agrees, with symptoms and bite recorded beside the millimeters.

I learned that discipline by getting a sequence wrong. I once reversed the before-and-after labels on a nail series and built a trend in the wrong direction; it cost me the entire comparison. A jaw log needs dates anchored to surgery, fixation changes, and imaging for the same reason. Sequence is evidence.

If opening plateaus below the clinician's target, the bite drifts, a tooth darkens or becomes sensitive, or numbness stops improving, bring the record to review. Some sensory deficits persist despite sound bone healing. The purpose of monitoring is to show the specialist what changed and when, while there is still a decision to make.

Frequently asked questions

Can you fully recover from a broken jaw?

Yes. MedlinePlus says a broken jaw usually heals well after treatment. Basic bone healing commonly takes about six weeks, while comfortable chewing, mouth opening, and lower-lip sensation may recover on separate schedules. Infection, fracture displacement, condylar injury, tooth damage, or an altered bite can prolong care and require targeted follow-up.

Is a broken jaw a serious injury?

Yes. A mandibular fracture can affect breathing, bleeding, swallowing, nutrition, teeth, bite alignment, and facial sensation. Breathing difficulty, uncontrolled bleeding, or rapidly increasing swelling requires emergency help. Even a nondisplaced fracture needs urgent specialist assessment because the mouth can contaminate a fracture and a second break may be present.

How long is a hospital stay for a broken jaw?

Some uncomplicated fractures are treated as outpatients. For the plate-and-screw operation described in its patient guidance, the British Association of Oral and Maxillofacial Surgeons says the usual stay is one night, followed by an X-ray the next day. Airway concerns, other injuries, infection, or complex reconstruction can extend admission.

Can you still talk with a broken jaw?

Many people can speak, although swelling, pain, elastics, or maxillomandibular fixation can make speech limited or muffled. Do not loosen prescribed fixation to talk. Sudden inability to handle saliva, choking, breathing difficulty, or repeated vomiting is a safety problem requiring the emergency plan from your surgical team or immediate medical help.

How does a changed bite affect treatment timing?

A new or worsening bite change should be reported promptly rather than watched until the next routine visit. Swelling or muscle spasm may respond to guiding elastics, but displaced bone or hardware failure may need revision. The AO Foundation recommends identifying the cause with examination and appropriate imaging before choosing adjustment, elastics, or surgery.

What can you eat while a mandibular fracture heals?

Eat only the texture your surgeon permits. During a no-chew phase, choose smooth soups, yogurt, blended beans, suitably prepared eggs, fortified drinks, and other protein-rich foods that pass without biting. BAOMS advises a relatively soft diet for about six weeks after lower-jaw fixation. A dietitian can help if weight falls.