The recently invented NTI-TSS appliance is showing considerable promise as a treatment and prevention not only for many cases of TMJ  (jaw joint) and muscle pain, but for related tension heachaches - and even for migraine. (The device's inventor was a chronic migraine sufferer who originally devised it for his own treatment.)  The U.S. FDA approved the device as a primary treatment for migraine in 2001.

This small, custom-fitted appliance fits on the front teeth, and stops the clenching that's responsible for the headache or jaw pain. It must be fitted and adjusted by a dentist.