What is an NTI? - Chatham, NJ Dentist

A device to be used in the prophylactic treatment of medically diagnosed migraine pain as well as migraine associated tension-type headaches, by reducing their signs and symptoms through reduction of trigeminally innervated muscular activity.

(NTI-tss devices are manufactured of Lexan 144R polycarbonate, deemed safe for use by the FDA)
You can access more info on the NTI site.