new toothbrush

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What do you think about this new type of toothbrush?

youless @youless (114117) • Guangzhou, China 21 Mar 13

Two Canadians invented a new type of toothbrush which wears on your tongue and you brush the teeth with your tongue. You are hands-free to brush your teeth. What do you think? I just wonder whether it will make my tongue tired? Or...

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