Dental Problems

Causes and Symptoms of Locked Jaw Syndrome

Locked jaw syndrome is a disorder that is related to the joint of the jaw. Locked jaw syndrome causes severe pain and sometimes we cannot open the mouth.

Causes of Locked Jaw Syndrome

The common causes for the locked jaw are habits and aging, other include


It is the habit of grinding teeth, which leads to inflammatory reactions and muscle spasm. Other reasons include misalignment of the teeth, changes in normal stimuli, and in the chewing muscles. People who have the problem of teeth grinding disorder during night will have more effect on the joint.


While awake, some people continually clench or bite on things. These can be a pen or pencil, fingernails or even a chewing gum. Many times this can lead to a locked jaw.


Like all the other joints in our body, Temporomandibular joint is also prone to arthritic changes. Arthritic causes inflammation in the joints, thus affecting the TMJ. The changes, can also be due to normal aging, breakdown or degeneration of the joint.

Symptoms of Locked Jaw Syndrome

  • Swelling on the face and mouth on the effected side
  • Pain in the jaw joints and facial muscles. This may radiate to the shoulders and neck.
  • Causes ringing in the ear, ear pain and some times hearing loss.
  • You can here popping, clicking, grating sounds while the joints are moving.

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