If you've ever experienced the misery of a migraine, then you understand why some people will try just about anything that promises relief. Many migraine patients clench their teeth during sleep. The clenching may trigger migraines.The solution is the Nociceptive Trigeminal Inhibitor (NTI), a small mouthguard-like splint that is constructed to fit over your front teeth to prevent clenching which in turn prevents chronic headaches. Invented in 1989 by American headache sufferer and doctor James Boyd, the NTI received clearance from the U.S. Food and Drug Administration as a device to treat migraines and tension headaches in June, 2002. Studies have shown that 82% of migraine and headache sufferers who use the device experience an average 77% reduction of pain within two months. The procedure is simple and painless. All that is needed is a special dental impression made of your upper and lower teeth and a record of your bite. In a week an NTI is constructed by a dental technician.