Causes of Temporomandibular Joint Dislocation

22 October, 2020
Temporomandibular joint dislocation is a rare but potentially uncomfortable condition. Do you know what its possible causes and treatments are? Today's article will explain it, so continue reading.

Have you ever experienced temporomandibular joint dislocation? Usually, the several tendons and ligaments of the jaw keep it in place. However, they may fail and lead to this condition.

It occurs when one of the components of the joint, called a condyle, separates from the joint surface and moves over the temporal bone. It’s very common for this displacement to occur toward the anterior plane of the joint. However, it can move in any direction.

Reasons a jaw may be dislocated

Before getting into the possible causes of a dislocated jaw, it’s important to remember that it’s an uncommon pathology. In fact, several studies claim it only represents 3% of all dislocations. This is the main reason why there’s so much disagreement about its main cause.

What we can say for sure is that the causes will depend on the type of dislocation. The most frequent cause of an acute dislocation is trauma within minutes or hours of it.

In this respect, situations that involve a direct blow in this region could trigger jaw dislocation. However, don’t rule out that this injury may have occurred spontaneously. Thus, it can originate from various situations that involve opening the mouth a lot or keeping it open for a long time. For example:

  • Yawning
  • Laughing
  • Vomiting
  • Dental treatment
  • Endotracheal intubation

Chronic recurrent is another type of temporomandibular joint dislocation. This is defined as a constant variation over time and involves the wear of the joint components. In this case, the most frequent causes of a dislocated jaw are spontaneous.

Similarly, the jaw can easily become dislocated in people with bruxism or some psychiatric disorder. This is due to the constant stress they subject their joint to.

A person in pain.
Pain and clicking in the joint are the most evident signs of the problem.

Read about Jaw Pain: Have You Ever Suffered From It?

How do you recognize temporomandibular joint dislocation?

People with this lesion often have sudden pain in the jaw region, usually a kind of stab that limits movement. In addition, the joint snaps when trying to move it.

In short, the two main symptoms are pain and joint clicks. Also, you can notice the deviation of the jaw, either towards the healthy sides or forwards.

Many patients report not being able to close their mouths or achieve dental occlusion. However, these signs can vary. In fact, it evolves considerably in some patients in a matter of months because they didn’t feel any discomfort.

A doctor must use all the elements of the medical history to achieve a proper diagnosis. In this respect, they must investigate the characteristics of the pain and conduct a meticulous physical examination of the articulation. Often, an X-ray will be necessary as a confirmatory method.

What’s the treatment?

There’s medical treatment available for a dislocated jaw. So, you must consult a health professional if you suspect you might have this problem.

  • In the case of acute dislocations, these can be reduced by the Nelaton or Dupuis maneuvers in most cases. These will vary if it’s a bilateral or unilateral variant, respectively.
  • Both maneuvers have the same principle. A doctor will insert their thumbs into the oral cavity and place them on the lower molars. Then, they’ll press down while trying to raise the chin, which will generate a negative pressure or tension that’ll lead the mandibular condyle to its place.
  • In some cases, especially with stressed patients, it’ll be necessary to use general anesthesia to facilitate the process. After performing the maneuver described above, they may need a bandage to stabilize the area for a few days.
  • In cases of more severe acute or chronic recurrent dislocations, a surgical procedure may be necessary. However, the use of botulinum toxin has proven beneficial for avoiding surgery in certain cases.
  • Finally, physiotherapeutic treatment will help regain the functionality of the joint. Thus, it’s recommended in cases of chronic recurrent dislocations.
A person getting a jaw massage.
The unsettled jaw can be treated with physical therapy in certain patients.

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What to do in the case of temporomandibular joint dislocation?

This condition isn’t too serious to your health but can be quite annoying and lessen your quality of life as it’s hard to go on with the usual routine. Thus, the first thing you must do is consult a health professional if you suspect a dislocated jaw.

The aforementioned maneuvers and appropriate treatment with analgesics and anti-inflammatories are the only ways to reverse the problem. Try to stay with the same doctor if it’s a recurrent condition so they’re familiar with your case and can indicate the most appropriate measures to follow.

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