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Toothbrush Uses Solar Power Instead of Toothpaste

The toothbrush works by transmitting electrons through the middle of the toothbrush bar, with the electrons then reacting with acid in the saliva and causing a chemical reaction. It’s this chemical reaction which the Japanese company Shiken hopes will replace toothpaste and kill off plaque and bacteria just as efficiently.

via Toothbrush Uses Solar Power Instead of Toothpaste.

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