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.
Credits
By | Healthwise Staff |
---|
Primary Medical Reviewer | Adam Husney, MD - Family Medicine |
---|
Specialist Medical Reviewer | Arden Christen, DDS, MSD, MA, FACD - Dentistry |
---|
Last Revised | January 11, 2012 |
---|
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.
To learn more visit Healthwise.org
© 1995-2012 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.