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Zygomatic Fracture with Malocclusion

What is Zygomatic fracture malocclusion?

A zygomatic fracture (often referred to as a “cheekbone fracture”) is a break in the zygomatic bone, the prominent bone that forms the lateral wall and floor of the eye socket and contributes to the cheek contour. When the fracture disrupts the normal relationship between the upper and lower teeth, it is called malocclusion. In this context, malocclusion means the teeth no longer meet properly when the mouth is closed, which can cause difficulty chewing, pain, and changes in facial symmetry.

Because the zygomatic bone articulates with the maxilla (upper jaw) and the orbital floor, a displaced fracture can shift the maxilla forward or downward, pulling the dentition out of alignment. The combination of bone injury and dental mis‑fit makes prompt assessment essential—not only to restore facial aesthetics but also to prevent long‑term functional problems such as temporomandibular joint (TMJ) disorders or chronic sinus issues.

Common Causes

• Motor‑vehicle collisions – direct impact to the side of the face from a steering wheel, airbag, or vehicle intrusion.
• Physical assaults – punches, kicks, or blunt objects striking the cheek.
• Falls – especially from height or onto a hard surface, common in elderly patients.
• Sports injuries – contact sports (football, hockey, martial arts) or high‑velocity activities (skiing, mountain biking).
• Industrial or construction accidents – tools, machinery, or falling objects hitting the face.
• Combat or military injuries – ballistic or blast trauma can shatter the orbital‑zygomatic complex.
• Domestic accidents – slipping in the bathroom and hitting the side of the face.
• Animal bites – especially large dogs or wild animals that strike the cheek area.
• Severe sinus infections – rarely, chronic infection can erode the bone and predispose it to fracture with minor trauma.
• Pathologic fractures – tumors or osteoporosis weakening the bone, causing a fracture from low‑impact forces.

Associated Symptoms

Patients with a zygomatic fracture and secondary malocclusion frequently notice a cluster of signs that involve the eyes, nose, oral cavity, and surrounding soft tissues.

• Visible flattening or depression of the cheek
• Bruising (ecchymosis) over the cheek, lower eyelid, or around the nose
• Pain that worsens with chewing or opening the mouth
• “Double vision” (diplopia) or restricted eye movement if the orbital floor is involved
• Bleeding from the mouth or nose
• Swelling that may extend to the periorbital (around the eye) region
• Altered sensation (numbness or tingling) in the cheek, upper lip, or upper teeth due to infraorbital nerve involvement
• Difficulty speaking clearly because the teeth no longer meet properly
• Persistent “swallowing” or “clicking” sounds when the jaw moves
• Sinus drainage or recurrent sinus infections if the maxillary sinus is breached

When to See a Doctor

Because a displaced zygomatic fracture can affect vision, airway protection, and dental function, timely evaluation is crucial. Seek medical attention promptly if you experience any of the following:

• Severe facial pain that does not improve with over‑the‑counter analgesics
• Visible deformity of the cheek or eye socket
• Inability to close the mouth properly or a noticeable change in bite
• Double vision, blurred vision, or loss of vision in either eye
• Persistent bleeding from the mouth or nose that does not stop after 10–15 minutes
• Numbness or loss of sensation around the cheek, upper lip, or teeth
• Difficulty breathing because swelling is obstructing the airway
• Fever, foul‑smelling nasal discharge, or signs of infection after trauma

Diagnosis

Evaluation of a suspected zygomatic fracture with malocclusion is multidisciplinary, often involving emergency physicians, oral‑maxillofacial surgeons, and ophthalmologists.

Clinical Examination

• Inspection — assessment of facial symmetry, swelling, bruising, and any step‑off deformities.
• Palpation — gentle pressure over the zygomatic arch, infraorbital rim, and maxilla to locate tenderness or crepitus.
• Occlusion test — the patient is asked to bite down; the clinician notes any misalignment, open bite, or cross‑bite.
• Neurologic check — testing sensation in the infraorbital nerve distribution.
• Eye exam — assessment of globe position, extraocular movements, and pupillary response.

Imaging Studies

• Pan‑oramic radiograph (OPG) – useful for a quick overview of maxillary and zygomatic involvement.
• CT scan (cone‑beam or multidetector) – gold standard; provides 3‑D detail of bone displacement, sinus involvement, and orbital floor status.
• Plain facial X‑ray – limited but may be used in low‑resource settings.

Additional Tests (if indicated)

• Dental models or intra‑oral scans to plan occlusal correction.
• Endoscopic sinus evaluation when a maxillary sinus wall is breached.

Treatment Options

Treatment aims to restore facial height, realign the dentition, and protect ocular and sinus structures. Management is individualized based on fracture displacement, patient age, and overall health.

Immediate (Emergency) Care

• Control bleeding with pressure dressings or nasal packing.
• Apply a cold compress to reduce swelling.
• Give analgesics (acetaminophen, ibuprofen) and oral antibiotics if there is a communication with the sinus or oral cavity (e.g., amoxicillin‑clavulanate).
• Stabilize the airway if swelling threatens breathing.

Surgical Management

• Open reduction and internal fixation (ORIF) – the most common approach. Small titanium plates and screws are placed along the zygomatic arch, infraorbital rim, or maxillary buttress to realign the bone.
• Closed reduction – for minimally displaced fractures; manual manipulation under sedation may suffice.
• Intermaxillary fixation (IMF) – wires or elastic bands may be used temporarily to hold the bite in the correct position while the bone heals.
• Orbital floor repair – if the floor is fractured, a thin titanium mesh or resorbable material is inserted to prevent ocular complications.
• Dental prosthetic/ortho‑tics – after bone healing, a dentist or orthodontist may fabricate splints or braces to fine‑tune occlusion.

Non‑Surgical / Supportive Care

• Soft‑diet for 4–6 weeks to avoid stress on the fracture site.
• Cold/heat therapy – ice for the first 48 hours, then warm compresses to improve circulation.
• Prescription pain medication – short‑course opioids only if needed, otherwise NSAIDs.
• Physical therapy – jaw exercises after the initial healing phase to restore range of motion and prevent TMJ stiffness.
• Oral hygiene – gentle rinses with saline or chlorhexidine to reduce infection risk if there is an oral–sinus communication.

Follow‑up Care

• First follow‑up 1 week post‑op to check wound healing and suture removal.
• Subsequent visits at 4–6 weeks for radiographic confirmation of bone union.
• Dental review at 3–6 months to assess occlusion and plan any orthodontic refinement.

Prevention Tips

While accidents can’t be eliminated entirely, many zygomatic fractures are preventable with simple precautions:

• Wear a properly fitted helmet when riding motorcycles, bicycles, or engaging in high‑risk sports.
• Use face guards in contact sports such as football, lacrosse, or martial arts.
• Secure loose items in cars; adjust airbags and seatbelts to reduce facial impact.
• Maintain good bone health – adequate calcium, vitamin D, and weight‑bearing exercise to reduce osteoporosis‑related fractures.
• Improve home safety for seniors: remove tripping hazards, install grab bars, and ensure good lighting.
• Practice defensive driving and obey speed limits to lower the risk of high‑impact collisions.
• When working with tools or machinery, always wear protective face shields and follow safety protocols.
• Promptly treat chronic sinus infections to prevent bone weakening.
• Educate children about safe play and discourage roughhousing near hard surfaces.

Emergency Warning Signs

If any of the following develop suddenly after facial trauma, seek emergency care (e.g., go to an urgent‑care center or call 911):

• Severe, uncontrolled bleeding from the mouth or nose
• Loss of consciousness or confusion
• Sudden vision loss, double vision that does not improve, or bulging of the eye
• Inability to breathe because swelling or blood is blocking the airway
• Extreme swelling or bruising that rapidly expands
• Persistent, throbbing headache combined with vomiting or dizziness (possible intracranial injury)
• Facial numbness that spreads rapidly or is accompanied by weakness in other facial muscles

Key Takeaways

A zygomatic fracture coupled with malocclusion is a serious injury that can affect appearance, vision, and the ability to chew. Early recognition, thorough imaging, and appropriate surgical or non‑surgical management greatly improve outcomes. Even after successful treatment, follow‑up with dental and maxillofacial specialists is essential to fine‑tune the bite and prevent long‑term complications.

References:

• Mayo Clinic. “Zygomatic bone fracture.” Accessed June 2026.
• American Academy of Oral and Maxillofacial Radiology. “Imaging of facial fractures.” AAOMR Journal, 2022.
• Cleveland Clinic. “Facial trauma – treatment and recovery.” 2023.
• National Institutes of Health (NIH). “Management of facial fractures.” Ongoing clinical guidelines.
• World Health Organization. “Road safety and facial injury prevention.” 2021.

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