From Men’s Health:
It’s called the Amabrush, and it’s a fully automatic toothbrush that’s supposed to clean those pearly whites in a matter of seconds. Yup, you stick the brush in your mouth, do nothing, and 10 seconds later, you just brushed your teeth.
Source: Weird or Cool: This Automatic Toothbrush Will Clean Your Teeth in 10 Seconds | Men’s Health