This device would consist of a series of rotating electric toothbrush heads attached to a bending piece of plastic. It would be large enough, flexible enough, and have small enough heads that the user could mold it to her mouth, fitting to top and bottom teeth, inside and outside. All of the user's teeth can be brushed in seconds.
edit: As envisioned this would have rotating heads on all three sides of the user's teeth. Three rotating heads per tooth.-- Voice, Jun 27 2010 The primitive version http://www.extremet...in-just-six-seconds [Voice, Oct 05 2013] Now baked and available! https://www.mdpi.com/1660-4601/17/13/4649 [Voice, Aug 28 2021] Could be pretty ugly, but highly effective. +-- blissmiss, Jun 27 2010 Hmmm. Interesting concept... And you would put a dollop of toothpaste on each brush head then? Would a complementary (55 gallon) starter drum of toothpaste be included with each order? No matter; I'm sold. I'll take two. Bun! [+]-- Grogster, Jun 27 2010 [+] Shades of Jimmy Neutron. This household will need three...four if you can make one for canines.-- 2 fries shy of a happy meal, Jun 27 2010 Yay, full baked! But unfortunately; "Conclusions: The U-shaped automatic electric toothbrush tested in this study proved to be not effective in removing dental plaque".-- neutrinos_shadow, Aug 29 2021 Great, this can be attached to the levitating chair via the energy saving robotic arm, next to the oversized cup holder.-- wjt, Sep 04 2021 random, halfbakery