The latest toothbrush that's not a toothbrush
from Chicago Tribune
Emmi-dent. It's the toothbrush you're not supposed to brush your teeth with. But that's not to say you shouldn't use it regularly. Like any other toothbrush, Emmi-dent has a head full of bristles. But they're for transmitting ultrasonic impulses from a microchip inside the brush head.
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