What’s better than mint-flavored or green tea toothpaste? Apparently, no toothpaste. It is a puzzle how smudging your teeth with flavored toothpaste can help to prevent tooth decay. Brushing teeth without the toothpaste may seem odd at first but Shiken has come up with a solar-powered toothbrush which can cause a chemical reaction upon contact with the saliva to clean teeth just as effectively.
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