It's one of the first things you do in the morning, and very often the last thing you do before bed. Brush your teeth.But while you're brushing back and forth against your pearly pegs, your mind on others things, you've probably never stopped to wonder quite how hygenic the toothbrush in your mouth actually is.Now a dentist has taken to to reveal the rather disturbing reason he keeps a close eye on the location of his toothbrush.
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