Jawbones transmit sound just as well as the bone that traditional hearing aids rely on.
But first, the team had to determine how well dental implants transmit sound compared with natural teeth and the mastoid bone behind the ear, which other types of hearing aids rely on to work. So the researchers applied sound tones to the implants, natural teeth and mastoid bones of 38 people with hearing loss and a single dental implant.
Front-tooth implants appeared to work slightly better than dental implants toward the back of the jaw. That may be because jawbone at the front of the mouth is harder than jawbone at the back, the team speculates. Lower teeth and implants worked as well as uppers for transmitting sound. Compared with traditional hearing aids, dental implant hearing aids could offer “excellent concealment, good comfort and improved quality of sound,” the researchers write.
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