Bruxism

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Overview

Symptoms

Treatment

Prevention

Bruxism

Definition:

Bruxism is when you clench or grind your teeth. The term clenching means you tightly clamp your top and bottom teeth together, especially the back teeth. The stressful force of clenching causes pressure on the muscles, tissues, and other structures around your jaw. This can lead to jaw joint disorders, jaw pain and soreness, headaches, earaches, damaged teeth, and other problems. These symptoms are often collectively referred to as "TMJ" or temperomandibular joint problems.

Many people who clench also grind their teeth. Grinding is when you slide your teeth over each other, generally in a sideways, back-and-forth movement. This action may wear down your teeth and be noisy enough at night to bother sleeping partners. Like clenching, grinding can lead to jaw pain and other problems.

Alternative Names:

Teeth grinding and clenching

Causes, incidence, and risk factors:

People can clench and grind subconsciously during both the day and night, although sleep-related bruxism is often the bigger problem because it is harder to control.

The cause of bruxism is not completely agreed upon, but daily stress may be the trigger in many people. Some people probably clench and never feel symptoms. Whether or not bruxism causes pain and other problems may be a complicated mix of factors -- how much stress you are under, how long and tightly you clench and grind, whether your teeth are misaligned, your posture, ability to relax, diet, sleeping habits, and other factors. Each person is probably different.

Review Date: 6/24/2004
Reviewed By: A.D.A.M. editorial. Previously reviewed by Jennifer A. Schwartz, D.M.D., General Dentist, University of Pennsylvania Dental Care Network, Philadelphia, PA. Review provided by VeriMed HealthCare Network (11/30/2001).

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