Skip to Content

Menu Icon
Menu
Menu Icon

Jaw Problems: Structural Problems and Injury

Topic Overview

Problems in the structure of the jaw joint include:

  • Problems in the bones or other structures of the joint. These may have been present since birth (congenital), developed over time, or been caused by injury.
  • Problems with the disc that cushions the joint between the jawbone (mandible) and the skull, such as the disc moving out of its normal position (disc displacement) or tearing (usually the result of a long-standing joint dysfunction).
  • Arthritis, which can cause wearing away of the disc or inflammation of the membranes lining the joint (synovitis).
  • Scar tissue within the joint (adhesions).
  • In rare cases, tumors in or near the jaw joint.

Injury to the temporomandibular (TM) joint most commonly occurs when too much stress is placed on the joint by:

  • Chewing hard or chewy foods.
  • Bruxism (grinding or clenching the teeth) over a period of time, and especially during sleep.
  • Dental procedures that require the jaw to be held open too wide for a long time.

These stressors can cause the articular disc to shift out of its normal position (disc displacement). Because this disc cushions the joint between the jawbone (mandible) and the skull, displacement can result in pain and locking of the joint.

A blow to the jaw, TM joint dislocation, or jaw fracture can also result in TM disorder symptoms.

Related Information

Credits

By Healthwise Staff
Adam Husney, MD - Family Medicine
Arden Christen, DDS, MSD, MA, FACD - Dentistry
Last Revised January 11, 2012

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.

Decision Points

Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.

You'll find Decision Points to help you answer questions about:

Interactive Tools

Get started learning more about your health!

Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.

Symptom Checker

Feeling under the weather?

Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.

Health Library