Temporomandibular (TM) disorder

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Temporomandibular (TM) disorder

Temporomandibular (TM) disorder is a condition in which a person feels pain and discomfort in the muscles and joints that connect the lower jawbone (mandible) to the skull. These flexible muscles and joints are felt right in front of the ears and are needed to talk, chew, swallow, and yawn.

The most common cause of TM disorder is tension in the muscles that control the jaw, such as from clenching the jaw or grinding the teeth. TM disorder can also result from a joint problem present at birth, injury, or arthritis.

Common symptoms of TM disorder include:

Pain on one or both sides of the jaw when opening the mouth, chewing, or yawning.
Headaches.
Painful clicking, popping, or grating sensations when opening the jaw.
An inability to open the jaw wide.
Locking of the jaw in an open or closed position.

Treatment for TM disorder may include rest, the use of anti-inflammatory drugs, and physical therapy. In some cases, splints or bite blocks might be used for a short period of time. Surgery or dental work are rarely necessary.

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Author	Jeannette Curtis
Author	Caroline Rea, RN, BS, MS
Editor	Kathleen M. Ariss, MS
Editor	Susan Van Houten, RN, BSN, MBA
Associate Editor	Tracy Landauer
Associate Editor	Pat Truman, MATC
Primary Medical Reviewer	Patrice Burgess, MD - Family Medicine
Primary Medical Reviewer	Adam Husney, MD - Family Medicine
Primary Medical Reviewer	Kathleen Romito, MD - Family Medicine
Last Updated	May 25, 2007

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Last updated:	May 25, 2007
Author:	Caroline Rea, RN, BS, MS
Reviewed By:	Kathleen Romito, MD - Family Medicine
Editors:	Susan Van Houten, RN, BSN, MBA, Pat Truman, MATC

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