Maxillofacial Trauma

Definition

Maxillofacial trauma refers to any injury to the face or jaw caused by physical force, the presence of foreign objects , animal or human bites , or burns.

Injuries to the face, by their very nature, impart a high degree of emotional, as well as physical trauma to patients. The science and art of treating these injuries requires special training involving a “hands on” experience and an understanding of how the treatment provided will influence the patient’s long term function and appearance.

Oral and Maxillofacial Surgeons deliver emergency room coverage for facial injuries, which include the following conditions:

  • Facial lacerations
  • Intra-oral lacerations
  • Avulsed (knocked out) teeth
  • Fractured facial bones (cheek, nose or eye socket)
  • Fractured jaws (upper and lower jaw)

Description

Maxillofacial trauma includes injuries to any of the bony or fleshy structures of the face. Any part of the face may be affected. Teeth may be knocked out or loosened. The eyes and their muscles, nerves, and blood vessels may be injured as well as the eye socket (orbit), which can be fractured by a forceful blow. The lower jaw (mandible) may be dislocated by force. Although anchored by strong muscles for chewing, the jaw is unstable in comparison with other bones and is easily dislocated from the temporomandibular joints that attach it to the skull. A fractured nose or jaw may affect the ability to breathe or eat. Any maxillofacial injury may also prevent the passage of air or be severe enough to cause a concussion or more serious brain damage.

Symptoms:

  • Changes in sensation and feeling over the face
  • Deformed or uneven face or facial bones
  • Difficulty breathing through the nose due to swelling and bleeding
  • Double vision
  • Missing teeth
  • Swelling around the eyes that may cause vision problems
  • Bleeding from the nose, eyes, or mouth, or nasal blockage
  • Breaks in the skin (lacerations)
  • Bruising around the eyes or widening of the distance between the eyes, which may mean injury to the bones between the eye sockets

The following may suggest bone fractures:

  • Abnormal sensations on the cheek and irregularities that can be felt
  • An upper jaw that moves when the head is still

The Nature of Maxillofacial Trauma

There are a number of possible causes of facial trauma such as motor vehicle accidents, accidental falls, sports injuries, interpersonal violence and work related injuries. Types of facial injuries can range from injuries of teeth to extremely severe injuries of the skin and bones of the face. Typically, facial injuries are classified as either soft tissue injuries (skin and gums), bone injuries (fractures), or injuries to special regions (such as the eyes, facial nerves or the salivary glands).

Soft Tissue Injuries of the Maxillofacial Region

When soft tissue injuries such as lacerations occur on the face, they are repaired by suturing. In addition to the obvious concern of providing a repair that yields the best cosmetic result possible, care is taken to inspect for and treat injuries to structures such as facial nerves, salivary glands and salivary ducts (or outflow channels).

Bone Injuries of the Maxillofacial Region

Fractures of the bones of the face are treated in a manner similar to the fractures in other parts of the body. The specific form of treatment is determined by various factors, which include the location of the fracture, the severity of the fracture, the age and general health of the patient. When an arm or a leg is fractured, a cast is often applied to stabilize the bone to allow for proper healing. Since a cast cannot be placed on the face, other means have been developed to stabilize facial fractures.
One of these options involves wiring the jaws together for certain fractures of the upper and/or lower jaw. Certain other types of fractures of the jaw are best treated and stabilized by the surgical placement of small plates and screws at the involved site. This technique of treatment can often allow for healing and obviates the necessity of having the jaws wired together. This technique is called "rigid fixation" of a fracture. The relatively recent development and use of rigid fixation has profoundly improved the recovery period for many patients, allowing them to return to normal function more quickly.

The treatment of facial fractures should be accomplished in a thorough and predictable manner. More importantly, the patient's facial appearance should be minimally affected. An attempt at accessing the facial bones through the fewest incisions necessary is always made. At the same time, the incisions that become necessary, are designed to be small and, whenever possible, are placed so that the resultant scar is hidden.

Injuries to the Teeth and Surrounding Dental Structures

Isolated injuries to teeth are quite common and may require the expertise of various dental specialists. Oral surgeons usually are involved in treating fractures in the supporting bone or in replanting teeth that have been displaced or knocked out. These types of injuries are treated by one of a number of forms of splinting (stabilizing by wiring or bonding teeth together).

If a tooth is knocked out, it should be placed in salt water or milk. The sooner the tooth is re-inserted into the dental socket, the better chance it will survive. Therefore, the patient should see a dentist or oral surgeon as soon as possible. Never attempt to wipe the tooth off, since remnants of the ligament that hold the tooth in the jaw are attached and are vital to the success of replanting the tooth. Other dental specialists may be called upon such as endodontists, who may be asked to perform root canal therapy, and/or restorative dentists who may need to repair or rebuild fractured teeth. In the event that injured teeth cannot be saved or repaired, dental implants are often now utilized as replacements for missing teeth.