Because the cause of many temporomandibular joint (TMJ) disorders remains unknown, there is no known method of prevention. However, because some types of TMJ disorders are associated with trauma to the jaw, individuals should take steps to reduce their risk of injuries. In order to reduce the risk of injury, individuals should wear protective gear when participating in contact sports, such as hockey or football. Individuals who ride motorcycles should wear helmets that have face shields. Individuals are encouraged to make lifestyle changes to avoid behaviors that may contribute to the development of TMJ disorders. Many behaviors, including frequently clenching the jaw or grinding the teeth (which may occur during sleep), poor posture that puts strain on the muscles and bones near the jaw, or other habits that overwork the jaw muscles (e.g. constantly chewing gum), may contribute to the development of TMJ disorders and should be avoided. Wearing a night guard during sleep may help protect the teeth from become worn down and damaged when an individual grinds his/her teeth. Night guards are available at local drug stores.
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