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Teeth grinding (bruxism)

Teeth grinding (bruxism) is the unconscious gnashing, grinding, or clenching of the teeth. It usually occurs during sleep. This process can grind away parts of the teeth, leaving flattened, worn-down biting edges; fractured enamel; and painful or loose teeth.

Although the exact cause of bruxism is not always known, it may be caused by:

  • Emotional stress, fatigue, or sleep disorders.
  • An abnormal bite or crooked or missing teeth.
  • Alcohol or drug abuse.

Talk to your dentist if grinding is causing injury to your teeth. Your dentist will determine which treatment is right for you. A mouth guard may be recommended to help protect your teeth from further damage.

Author Susan Van Houten, RN, BSN, MBA
Editor Alison Allen
Editor Sydney Youngerman-Cole, RN, BSN, RNC
Associate Editor Tracy Landauer
Primary Medical Reviewer Martin Gabica, MD
- Family Medicine
Primary Medical Reviewer William M. Green, MD
- Emergency Medicine
Specialist Medical Reviewer Steven K. Patterson, BSc, DDS, MPH
- Dentist
Last Updated December 1, 2006

WebMD Medical Reference from Healthwise

Last Updated: December 01, 2006
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.