Engineers create fastest-ever 'smartbrush' that cleans your teeth in less than three seconds

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.