Europe has given the nod for the use of SoundBite Dental Hearing Aid from Sonitus Medical (San Mateo, CA). Incidentally, the FDA had cleared this device in January.
With functions similar to a cochlear implant, this dental hearing aid receives audio signals from a transmitter in the ear and in turn resonates the cochlea, through the teeth. It is designed to deliver sound across a broad frequency range of 250 to more than 12,000 Hz.
SoundBite hearing system is designed in such a way that it can easily fit around either the upper left or right back teeth, without any necessity of teeth alteration.