TL;DR

Key Facts

What Is Maxillofacial Trauma?

Maxillofacial trauma encompasses injuries to the bones and soft tissues of the face: the orbit, nose, zygomatic complex, maxilla, mandible, and associated soft tissues (skin, muscles, nerves, vessels, salivary glands, lacrimal apparatus). Aetiology varies by region and age group: road traffic accidents (most common worldwide), assault, falls, sport, and industrial accidents. Maxillofacial injuries are rarely immediately life-threatening in isolation, but upper airway compromise, haemorrhage from internal maxillary artery branches, and associated intracranial, cervical spine, and thoracic injuries can be fatal — all trauma patients are assessed with the ATLS primary survey before any focus on facial injuries. Facial fractures are broadly categorised as: dentoalveolar trauma (teeth and supporting bone); mandibular fractures; midface fractures (Le Fort, zygomatic, orbital, nasal); and panfacial fractures (combined).

Why It Matters

Board examinations test maxillofacial trauma through clinical scenarios: What is the immediate priority when a patient arrives with mid-face trauma? An avulsed tooth — what storage medium is used, and what determines prognosis? A patient has a mandibular fracture with crepitus and malocclusion — is this fracture favourable or unfavourable? What does proptosis, ophthalmoplegia, and an enophthalmos in one eye following a punch to the face suggest? What clinical sign confirms Le Fort III versus Le Fort I? These clinical reasoning questions require application of trauma principles, classification systems, and management decision-making.

Primary Survey and Assessment

All trauma patients are managed within the ATLS framework — systemic life-threatening injuries take priority over facial injuries, however impressive the facial deformity. Airway management in facial trauma is particularly challenging: the normal supine posture recommended for spinal immobilisation forces a tongue and soft-tissue obstructed patient into a worse position; bilateral mandibular condyle fractures and Le Fort fractures can compromise pharyngeal patency; bilateral parasymphysis fractures create a flail mandibular segment (“bucket handle”) that allows the tongue to fall posteriorly. Key airway manoeuvres: chin-lift / jaw-thrust (maintains cervical alignment while opening airway); suction of blood and debris; manual reduction of the mandible (if flail segment); airway adjuncts (Guedel airway, nasopharyngeal airway — caution with nasopharyngeal airway if basal skull fracture is suspected — may be inserted intracranially through a cribriform plate fracture); oral or nasotracheal intubation; surgical airway (cricothyroidotomy → tracheostomy) if intubation is not possible.

Glasgow Coma Scale

The GCS quantifies level of consciousness and is documented as part of the primary survey (D = Disability). Total score range: 3 (worst) to 15 (fully alert and oriented). The scale has three components: Eye opening (E): 4 = spontaneously; 3 = to voice; 2 = to pain; 1 = no eye opening. Verbal response (V): 5 = oriented; 4 = confused; 3 = inappropriate words; 2 = incomprehensible sounds; 1 = no verbal response. Motor response (M): 6 = obeys commands; 5 = localises pain; 4 = withdraws from pain; 3 = abnormal flexion (decorticate); 2 = abnormal extension (decerebrate); 1 = no motor response. A GCS of ≤8 is used as the threshold for intubation and ventilation (“8 — intubate”). GCS documents neurological status and detects deterioration (falling GCS indicates worsening intracranial pathology — repeat CT head is indicated).

Signs of Basal Skull Fracture

Fractures through the base of the skull follow predictable patterns and produce characteristic clinical signs depending on which fossa is involved: Anterior cranial fossa fracture: periorbital ecchymosis (“raccoon eyes” / “panda eyes” — bilateral periorbital bruising that appears 24–72 hours after injury and does not cross the orbital rim); CSF rhinorrhoea (leak from cribriform plate through the nose); anosmia (CN I injury). Posterior cranial fossa fracture: Battle’s sign — bruising over the mastoid process (appears 24–48 hours after injury — bruising tracks from the petrous temporal bone along the occipital fascial planes to the mastoid skin); CSF otorrhoea (leak from fractured petrous bone through the external ear if the tympanic membrane is perforated, or haemotympanum if the eardrum is intact — blood visible behind the drum on otoscopy). Ring sign: a drop of blood-contaminated fluid from the nose or ear is placed on white gauze or filter paper — if CSF is present, a clear halo ring forms around the central bloody spot as the CSF separates from the blood. Base of skull fractures are associated with CN VII and CN VIII injury (within the petrous temporal bone) — facial nerve palsy and sensorineural deafness.

Dentoalveolar Trauma

Ellis Classification of Crown Fractures

Andreasen Classification of Luxation Injuries

Tooth Avulsion — Detailed Management

After reimplantation (emergency or planned): clean the socket of blood clot with saline irrigation; if the socket has collapsed, carefully re-expand with a blunt instrument without damaging the socket walls; gently reinsert the tooth with finger pressure (do not force it — if it does not seat, irrigate the socket and reattempt); apply a flexible splint to the reimplanted tooth and one tooth on either side (0.016″ round stainless steel wire + acid etch composite or TTS titanium trauma splint). Splint for 2 weeks for most avulsed teeth (7–10 days if PDL cells are still viable; up to 4 weeks if extensive bone involvement). Post-reimplantation: amoxicillin 500mg TDS × 7 days (tetracycline 100mg BD in adults — more PDL-protective); update tetanus vaccination; chlorhexidine 0.1% mouthwash × 2 weeks; soft diet for 2 weeks; follow up at 2 weeks (splint removal), 1 month, 3 months, 6 months, 1 year, then annually. Pulp management: in mature closed-apex teeth — begin RCT 7–10 days post-reimplantation (before pulp necrosis triggers inflammatory resorption). Do NOT do RCT immediately (pulp may revascularise in immature teeth). Immature open-apex teeth: may revascularise — defer RCT, monitor; use RCT with MTA apical plug only if pulp necrosis confirmed. Complications: external inflammatory resorption (if bacteria in necrotic pulp provide stimulus → most aggressive, fast — treated by RCT with calcium hydroxide); replacement resorption/ankylosis (PDL death → bone grows into root surface; tooth eventually disappears — infraocclusion in growing patients; decoronation when needed); cervical root resorption.

Mandibular Fractures

Classification by Fracture Site

Favourable vs. Unfavourable Fractures

Muscle pull determines whether a mandibular fracture is favourable (muscles pull the fragments together or along the fracture line, tending to reduce the fracture) or unfavourable (muscles pull the fragments apart, displacing the fracture and preventing spontaneous reduction). This analysis must be performed in two planes: Horizontal plane (buccal view): muscle forces assessed against the direction of the fracture line. Masseter and medial pterygoid pull the posterior fragment superiorly and anteriorly. If the fracture line runs forward and downward from lingual to buccal, the muscle pull closes the fracture = horizontally favourable. If it runs backward and downward, the muscle pull opens the fracture = horizontally unfavourable. Vertical plane (occlusal view): assessed against the medial pull of the medial pterygoid and masseter. If the fracture line runs from buccal to lingual in a direction that is compressed by the medial pull = vertically favourable. If the fracture line runs such that the lateral pterygoid pulls the small posterior fragment anteriorly and medially, widening the fracture = vertically unfavourable. Unfavourable fractures in either plane typically require ORIF — the muscles will displace the fracture segments even when a patient is placed in IMF.

Treatment: IMF vs. ORIF

Closed reduction with intermaxillary fixation (IMF): arch bars (Erich-type) or eyelet wires are applied to the upper and lower dentition; interdental wires or rubber bands are then used to wire the jaws together in the correct occlusion. The fracture heals in the correct position because the teeth determine the jaw relationship. Duration: 4–6 weeks (standard); 6–8 weeks for complex or unfavourable fractures. Indications: greenstick/non-displaced fractures; favourable fractures; condylar fractures in children; medically unfit patients. Contraindications: airway at risk (epilepsy, substance misuse, nausea); edentulous or severely periodontally compromised; unfavourable fractures; open fractures with gross contamination; and IMF is relatively contraindicated in patients with seizure disorders (vomiting with wired jaws → aspiration). Open reduction and internal fixation (ORIF): titanium miniplates (1.5–2.0mm systems — Champy’s technique of tension band plating for body/angle fractures; two plates for parasymphysis/symphysis) are applied directly to the fracture site via intraoral (preferred — avoids facial scarring) or extraoral (submandibular, retromandibular, or transparotid) approaches. ORIF provides rigid fixation that allows early jaw mobilisation — the patient does not need IMF. Advantages: faster rehabilitation; no aspiration risk; can be performed in edentulous patients. Disadvantages: surgical risk to IAN; plate infection or failure; requires specialist training. Bone healing in the mandible: radiographic healing 6–8 weeks; clinical healing 4–6 weeks; complete remodelling 6–12 months.

Midface Fractures

Le Fort Fractures

The Le Fort classification (René Le Fort, 1901) describes patterns of fracture through the predictable lines of weakness in the midface — these are areas of thin bone that consistently fracture when the midface receives sufficient blunt force. All three Le Fort fracture types involve the pterygoid plates (the pterygomaxillary junction — the weakest link between the maxilla and the skull base — is fractured in all Le Fort patterns). This is the key anatomical feature: if the pterygoid plates are fractured, a Le Fort fracture exists. Le Fort I: horizontal fracture through the lower maxilla above the apices of the teeth — separates the tooth-bearing maxilla and palate from the upper face (“floating palate”). Fracture lines: through the lateral nasal walls, the lower nasal septum, the lateral maxillary walls, and the pterygoid plates. Clinical: malocclusion; step deformity at the pyriform rim; mobility of the maxilla alone (tooth-bearing segment moves, nasal bridge is stable). Le Fort II: pyramidal fracture — the fracture passes through the frontonasal suture (nasofrontal junction), the medial orbital walls and floors (infraorbital rim), the maxillary antral walls, and the pterygoid plates. The nasal bones are included in the mobile segment. Clinical: elongated midface; infraorbital nerve anaesthesia (cheek and upper lip numbness); both the palate/alveolus and nasal pyramid move together on rocking. Le Fort III: craniofacial disjunction — the fracture passes through the nasofrontal suture, the medial and lateral orbital walls (zygomaticofrontal suture), and the zygomatic arches, completely separating the entire facial skeleton from the cranial base. Clinical: dish-face deformity (entire midface displaced posteriorly — “pushing the face toward the back of the head”); the entire facial skeleton (cheekbones, nose, palate — everything below the cranium) moves together; severe haemorrhage from internal maxillary artery branches; risk of CSF leak through disrupted cribriform plate.

Zygomatic Complex Fracture

The zygomatic complex (ZMC) is the cheekbone — it articulates with four bones: the frontal (zygomaticofrontal suture), the maxilla (zygomaticomaxillary suture, which includes the orbital floor and the zygomaticomaxillary buttress), the temporal (zygomaticotemporal suture — zygomatic arch), and the sphenoid (within the lateral orbital wall). A ZMC fracture therefore involves fractures through all four suture lines — this is why it was previously called a “tripod” fracture (three visible suture lines) or “quadripod” or “tetrapod” fracture (four suture lines). Clinical features: flattening of the malar eminence (cheekbone); periorbital ecchymosis; subconjunctival haemorrhage; step deformity at the infraorbital rim (felt on palpation, may be visible); cheek anaesthesia (infraorbital nerve injury — infraorbital foramen is at the zygomaticomaxillary suture line); trismus (zygomatic arch may impinge on the coronoid process of the mandible on opening); diplopia (if orbital floor is disrupted — inferior rectus involvement). CT imaging: both coronal and axial sections; look for all four suture lines + orbital floor integrity. Treatment: if non-displaced and acceptable cosmesis — conservative. Displaced fractures: ORIF via upper buccal sulcus (Gillies’ temporal approach — elevator through temporal fascial approach to lever the zygomatic arch up and forward), orbital rim incision, and lower eyelid or transconjunctival approach (for orbital floor).

Orbital Blow-Out Fracture

An orbital blow-out fracture is a fracture of the orbital floor and/or medial wall WITHOUT involvement of the orbital rim. Mechanism: two theories — (1) Hydraulic theory: the blow is transmitted directly to the eyeball, which increases intraorbital pressure and blows out the thin orbital floor into the maxillary sinus; (2) Buckling theory: the orbital rim buckles inward and the energy is transmitted to the thin orbital floor, which fractures. Clinical features: periorbital ecchymosis and oedema; diplopia (double vision) — particularly on upward gaze (inferior rectus and inferior oblique muscles may be entrapped in the fracture or tethered by periorbita) — this is the most important functional sign; enophthalmos (posterior displacement of the globe — occurs acutely if a large volume of orbital fat has herniated into the maxillary sinus, or late as oedema resolves and fat atrophy occurs); anaesthesia of the cheek and upper lip (infraorbital nerve runs through the orbital floor and is disrupted); infraorbital haematoma (“step” on palpation of the inferior orbital rim, though the rim itself is intact in a pure blow-out). Forced duction test: with topical anaesthetic drops, grasp the inferior rectus tendon/conjunctiva with forceps and attempt to rotate the globe upward — restriction (positive test) confirms mechanical entrapment, distinguishing it from a traumatic nerve palsy (which shows a negative forced duction test — the muscle moves freely but CN III is not activating it). CT imaging (coronal cuts): shows the trap-door defect in the orbital floor; herniated orbital fat and inferior rectus muscle into the maxillary sinus; “teardrop sign” (herniated orbital soft tissue hanging down into the antrum). Indications for surgical repair: persistent diplopia with positive forced duction; enophthalmos >2mm; large floor defect (>50% of floor area). Timing: within 2 weeks, before fibrosis fixes the entrapped muscle. Approach: lower eyelid (subciliary or transconjunctival) + titanium mesh or resorbable PDS sheet to floor the orbital floor defect.

Nasal Fractures

The nasal bone is the most commonly fractured facial bone. Clinical features: nasal oedema and haematoma (may obscure the underlying fracture); crepitus on palpation; epistaxis (nasal bleeding — from disrupted nasal mucosal vessels; usually self-limiting); nasal deformity (deviation, depression, or “saddle nose” if bilateral); septal deviation. Nasal examination must always include internal nasal inspection: nasal septal haematoma (collection of blood between the perichondrium and cartilage of the septum — presents as purple/red bulging mass arising from the septum, which may be bilateral; MUST be drained urgently — failure to drain results in avascular necrosis of the septal cartilage and saddle nose deformity as the cartilage dies; drain by incision and drainage with counter-incision and pack/through-and-through suture to prevent reaccumulation). Timing of reduction: reduction should be performed either immediately (within 24–48 hours before swelling makes assessment and positioning impossible) or after oedema has resolved at 5–10 days. If performed after 7–10 days the bones begin to unite and closed reduction becomes difficult. Closed reduction (“manipulation of nasal fracture”) is performed under local or general anaesthesia: an Asch forceps is introduced into the nasal cavity to elevate a depressed fragment while the opposite hand controls direction externally. Post-reduction: internal nasal packing (anterior for 24 hours if bleeding); external splint/thermoplast for 2 weeks. Septoplasty: for residual septal deviation after nasal fracture reduction — performed at a later date (minimum 6 months) as definitive correction of the deviated septum.

Panfacial Fractures

Panfacial fractures combine mandibular fractures with midface fractures (Le Fort ± zygomatic ± orbital ± nasal) in the same patient. These occur in high-energy trauma — road traffic accidents, falls from height — and require a systematic reconstruction strategy. Surgical reconstruction is complex because both vertical and horizontal buttresses of the face are disrupted. Operative principles: re-establish vertical and horizontal height and width of the face using the remaining intact anatomical reference points; begin reconstruction at one intact reference (often the upper facial bones — if the upper face is intact, the midface is hung from it; if not, the occlusion is established first and the mandible serves as the reference). Sequencing controversy: top-down (upper → midface → mandible) vs. bottom-up (mandible → midface → upper) vs. outside-in vs. inside-out — current practice often uses an “inside-out and bottom-up” approach for severe panfacial injuries, establishing the mandibular arch (dental occlusion) first and then rebuilding upward and outward.

Clinical Considerations

• Never reimplant an avulsed primary (deciduous) tooth — it can damage the developing permanent successor: Reimplantation of primary teeth after avulsion is contraindicated. The roots of primary teeth are in close proximity to the underlying permanent tooth buds — a reimplanted primary tooth may mechanically damage the permanent successor (causing dilaceration, hypoplasia, or failure of eruption), introduce infection into the developing tooth follicle, or ankylose and prevent eruption of the permanent tooth. The management of primary tooth avulsion is reassurance, monitoring, and space maintenance if premature loss is expected to cause space-related problems. This contrasts sharply with permanent teeth, where reimplantation is always indicated (within the relevant timescales) to preserve alveolar bone.
• Inferior alveolar nerve paraesthesia after a mandibular fracture indicates fracture through the mandibular canal — sensitivity testing must be documented as baseline at the initial assessment: The IAN runs in the mandibular canal through the body of the mandible, exiting via the mental foramen as the mental nerve. Fractures through the body, angle, or parasymphysis of the mandible can contuse, stretch, or lacerate the IAN — causing ipsilateral lower lip and chin paraesthesia (hypo- or anaesthesia). This finding must be documented at the initial assessment because: (1) it confirms the fracture site/severity; (2) it forms a medicolegal baseline (a patient who develops IAN paraesthesia after surgical ORIF may claim the numbness was caused by surgery rather than the original fracture; baseline documentation before surgery is essential); (3) recovery of IAN function (testing with light touch, two-point discrimination) guides the rehabilitation timeline.
• Bilateral condylar fractures in children are managed conservatively to protect the condylar growth centres: The mandibular condyle is the primary growth centre for the mandible — up to 70% of mandibular growth occurs through endochondral ossification at the condylar cartilage. Fractures through this region in children (subcondylar fractures are most common) are managed conservatively: short-term IMF (1–2 weeks) followed by aggressive physiotherapy (opening exercises to prevent ankylosis). The paediatric condyle remodels remarkably well — even significantly displaced fractures often remodel with restoration of normal morphology. Surgical ORIF in children risks damaging the condylar growth centre, causing mandibular growth disturbance and facial asymmetry; it is reserved for the rare cases of completely dislocated condylar heads outside the joint that cannot be managed conservatively. The long-term concern with untreated/resorbed condylar fractures in children is TMJ ankylosis (particularly fibrous or bony ankylosis after haemarthrosis into the joint).
• The ring sign is used clinically to detect CSF contamination of nasal or ear fluid — but it is unreliable and should not replace CT imaging: The ring sign (halo sign) has long been taught as a bedside test for CSF: a drop of fluid is placed on filter paper or gauze — if CSF is present, it migrates faster than blood proteins, forming a clear outer halo around a central bloody spot. However, the ring sign has a high false-positive rate (any plasma-protein-poor fluid will form a halo — tears, mucus, saline irrigation fluid) and false-negative rate. In a trauma patient, suspected CSF leak should be confirmed with beta-2 transferrin assay on the collected fluid (the most specific test — beta-2 transferrin is present in CSF but not in blood, tears, or nasal secretions) or CT imaging. All suspected Le Fort II/III fractures should have CT head and face regardless of ring sign findings, as intracranial injury must be excluded.
• Subcondylar fractures can result in unilateral or bilateral anterior open bite — recognising this allows the examiner to identify the fracture site from the occlusal pattern alone: When the lateral pterygoid muscle pulls the condylar segment anteriorly and medially after a subcondylar fracture, the effective ramus height on the affected side is reduced (the condyle is no longer properly seated in the glenoid fossa). This causes the posterior teeth on the ipsilateral side to occlude prematurely, tilting the mandible and opening the bite anteriorly and on the contralateral side. In bilateral subcondylar fractures, both condylar segments are pulled anteriorly and inferiorly — both rami shorten symmetrically, causing a symmetric anterior open bite with posterior premature contacts bilaterally. This pattern of posterior premature contact + anterior open bite after trauma should immediately suggest bilateral condylar fracture, which can then be confirmed on CT (or panoramic radiograph showing the displaced subcondylar fragments). It must be differentiated from pre-existing skeletal anterior open bite (no trauma history; condyles are normally positioned).

Common Mistakes & Misconceptions

• Misconception: “Storing an avulsed tooth in water is better than nothing.”
  Correction: Water is the worst common storage medium for an avulsed tooth. Water is hypotonic relative to PDL cells — it causes rapid osmotic lysis of the PDL cells on the root surface. Even a few minutes in water is more damaging than the same time in cold milk or saliva. The message should be: milk (widely available) → saliva → saline (from a kit) → HBSS (emergency trauma kit). Any of these is dramatically better than water. Cold milk is the recommended bystander storage medium because it is widely available, approximately isotonic, and maintains PDL cell viability for up to 60 minutes.
• Misconception: “All Le Fort fractures present with an obviously mobile midface at clinical examination.”
  Correction: In clinical practice, muscle spasm, oedema, and impaction of the fractured segments can make a Le Fort fracture feel clinically stable on the mobility test. A Le Fort I fracture that is impacted (driven upward and backward) may show no obvious mobility on grasping the maxilla — but the patient has a locked Class III occlusion and cannot open their mouth (the impacted maxilla has gone posteriorly and is preventing mandibular protrusion). The clinical diagnosis of Le Fort fractures is always confirmed (and the fracture pattern fully characterised) with CT imaging — thin-section axial and coronal CT with multiplanar reconstructions. The bedside mobility test is a useful screening tool but CT is mandatory before surgical planning.
• Misconception: “Periorbital ecchymosis after head trauma always indicates an orbital fracture.”
  Correction: Periorbital ecchymosis (bruising around the eyes) after trauma may indicate an orbital fracture, but its most important differential diagnosis is anterior cranial fossa skull base fracture (raccoon eyes / panda eyes). The distinction: orbital fracture bruising appears within hours of injury, is often unilateral, and may not respect the orbital rim; anterior cranial fossa fracture bruising appears 24–72 hours after injury (as blood tracks through fascial planes from the fracture site), is often bilateral, and — crucially — does not cross the orbital septum (it is bounded by the orbital rim because the haematoma is tracking from the periorbita rather than direct soft-tissue bruising). Any bilateral periorbital ecchymosis appearing >24 hours after injury with no direct orbital trauma should trigger consideration of basal skull fracture.
• Misconception: “Root canal treatment should be performed immediately in a reimplanted avulsed tooth with an open apex.”
  Correction: In teeth with open (incompletely formed) apices, reimplantation should be followed by close monitoring but NOT immediate RCT. The open apex and immature vascular supply mean revascularisation of the pulp is possible — the wide open apex allows blood vessels to grow back into the necrotic pulp space. If RCT is performed immediately, this opportunity is lost and the tooth will have a permanently necrotic root canal in a root with thin, fragile dentinal walls (immature apex). The correct approach is: reimplant; splint; follow up closely; monitor for signs of pulp necrosis (discolouration, loss of EPT response, periapical pathology, root resorption visible radiographically) and initiate RCT with MTA plug only when necrosis is confirmed — or initiate pulp revascularisation/regeneration protocol (NaOCl + CHX irrigation, triple antibiotic paste dressing, blood clot activation).
• Misconception: “The Battle’s sign appears immediately after the injury, making it a useful sign for early diagnosis.”
  Correction: Battle’s sign (bruising over the mastoid process) is a delayed sign — it typically appears 24–72 hours after the injury as blood tracks along fascial planes from the petrous temporal bone fracture to the mastoid skin. It is NOT a useful acute sign. In the acute trauma setting (<4 hours), a patient with a petrous temporal bone fracture may have no mastoid bruising at all. Early diagnosis of base of skull fracture relies on: mechanism of injury (high-energy trauma); symptoms (headache, nausea, vomiting, neurological changes); haemotympanum on otoscopy (blood behind the intact eardrum — present early); GCS monitoring; and imaging (CT head). The delayed signs (Battle’s, raccoon eyes) are useful for identifying missed injuries or confirming the diagnosis in subacute presentations, not for acute A&E management.

Related Topics

References & Sources

1. Andreasen JO, Andreasen FM, Andersson L (eds) (2007). Textbook and Color Atlas of Traumatic Injuries to the Teeth, 4th ed. Blackwell Munksgaard. [The definitive reference — Ellis and Andreasen classification systems; avulsion management protocols; IADT guidelines basis]
2. International Association of Dental Traumatology (IADT) Guidelines (2020). Dental Trauma Guide. dentaltrama.org. [Current evidence-based clinical guidelines for dentoalveolar trauma management by injury type and age group]
3. Teasdale G, Jennett B (1974). Assessment of coma and impaired consciousness: a practical scale. Lancet, 304(7872):81–84. [Original GCS paper — scoring system validation]
4. Zide MF, Kent JN (1983). Indications for open reduction of mandibular condyle fractures. Journal of Oral and Maxillofacial Surgery, 41(2):89–98. [Classic reference — condylar fracture management decision-making]
5. Manson PN, Clark N, Robertson B, et al. (1999). Subunit principles in midface fractures: the importance of sagittal buttresses, soft-tissue reductions, and sequencing treatment of segmental fractures. Plastic and Reconstructive Surgery, 103(4):1287–1306. [Panfacial fracture reconstruction strategy — buttress principles]
6. Burnstine MA (2002). Clinical recommendations for repair of isolated orbital floor fractures: an evidence-based analysis. Ophthalmology, 109(7):1207–1210. [Orbital blow-out fracture — surgical indications and timing evidence review]
7. Dingman RO, Natvig P (1964). Surgery of Facial Fractures. Saunders. [Classic atlas of facial fracture management — plate principles and approaches]
8. Rowe NL, Williams JL (eds) (1985). Maxillofacial Injuries. Churchill Livingstone. [Comprehensive reference — classification and management of all facial fracture types]

Summary

Maxillofacial trauma management begins with ATLS primary survey — airway compromise from posterior displacement of the maxilla, bilateral condyle fractures, or bilateral parasymphysis flail segment is immediately life-threatening. Dentoalveolar trauma is classified using the Ellis system (crown fractures: Class I enamel; Class II enamel + dentine; Class III pulp exposure) and the Andreasen system (luxation: concussion, subluxation, extrusive, lateral, intrusive, avulsion). Avulsed permanent teeth must be reimplanted immediately — HBSS is the ideal storage medium; extra-oral dry time is the strongest prognostic factor; primary teeth are never reimplanted. Mandibular fractures are classified by site (angle most common in adults; condyle most common in children) and by favourability (direction of fracture line relative to muscle pull). Le Fort fractures are clinically diagnosed by maxillary mobility testing: Le Fort I = floating palate; Le Fort II = palate + nasal pyramid mobile; Le Fort III = entire midface mobile. Orbital blow-out fractures present with diplopia on upward gaze + enophthalmos; a positive forced duction test confirms inferior rectus entrapment requiring surgical repair within 2 weeks.

About the Author

Dr. Andries Smith

Founder, Dental Panda

Dr. Andries Smith founded Dental Panda in 2020. As an immigrant to the United States, he had to take the INBDE exam, even though he was practicing dentistry for over 10 years. This revealed an opportunity. Andries noticed that INBDE prep course companies were putting profit over students. With his expertise and experience in dentistry, he created free dental wiki resources for students and the general public to have access to.