Bruxism is when you grind your teeth (slide your teeth back and forth over each other).
People can clench and grind without being aware of it. It can happen during the day and night. Bruxism during sleep is often a bigger problem because it is harder to control.
There is some disagreement about the cause of bruxism. Daily stress may be the trigger in many people. Some people probably clench or grind their teeth and never feel symptoms.
Factors that influence whether or not bruxism causes pain and other problems will vary from person to person. They may include:
Grinding your teeth puts pressure on the muscles, tissues, and other structures around your jaw. The symptoms can cause temporomandibular joint problems (TMJ).
Grinding can wear down your teeth. It can be noisy enough at night to bother sleeping partners.
Symptoms of bruxism include:
An exam can rule out other disorders that may cause similar jaw pain or ear pain, including:
You may have a history of a high stress level and tension.
The goals of treatment are to reduce pain, prevent permanent damage to the teeth, and reduce clenching as much as possible.
These self-care tips may help relieve pain:
To prevent damage to your teeth, mouth guards or appliances (splints) are often used to treat teeth grinding, clenching, and TMJ disorders. A splint may help protect your teeth from the pressure of grinding.
A well-fitting splint should help minimize the effects of grinding. However, some people find that the symptoms go away as long as they use the splint, but pain returns when they stop. The splint may also not work as well over time.
There are many types of splints. Some fit over the top teeth, some on the bottom. They may be designed to keep your jaw in a more relaxed position or provide some other function. If one type doesn't work, another may. Botox injections into the jaw muscles have also shown some success in controlling clenching and grinding.
After splint therapy, adjustment of the bite pattern may help some people.
Finally, many approaches try to help people unlearn their clenching behaviors. These are more successful for daytime clenching.
In some people, just relaxing and modifying daytime behavior is enough to reduce nighttime bruxism. Methods to directly modify nighttime clenching have not been well studied. They include biofeedback devices, self-hypnosis, and other alternative therapies.
Bruxism is not a dangerous disorder. However, it can cause permanent damage to the teeth and uncomfortable jaw pain, headaches, or ear pain.
Bruxism may cause:
Nightly grinding can awaken roommates or sleeping partners.
See a dentist right away if you are having trouble eating or opening your mouth. Keep in mind that a wide variety of possible conditions, from arthritis to whiplash injuries, can cause TMJ symptoms. Therefore, see your dentist for a full evaluation if self-care measures do not help within several weeks.
Grinding and clenching does not fall clearly into one medical discipline. There is no recognized TMJ specialty in dentistry. For a massage-based approach, look for a massage therapist trained in trigger point therapy, neuromuscular therapy, or clinical massage.
Dentists who have more experience with TMJ disorders will typically take x-rays and prescribe a mouth guard. Surgery is now considered a last resort for TMJ.
Stress reduction and anxiety management may reduce bruxism in people who are prone to the condition.
Reviewed By: Ilona Fotek, DMD, MS, Dental Healing Arts, Jupiter, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.