Engineers create fastest-ever 'toothbrush'

Engineers have created the first-ever "smartbrush" that can clean your teeth in less than three seconds. The patented invention by Nicola Nichele, 28, is a motorised mouth guard that cleans a user's teeth simultaneously. People will spend more than 200 full days manually cleaning their gnashers by following dentists' advice that we spend three minutes after each meal.

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