I am not sure which thread to post this in; I had a dream last night about a new invention.
It is a Roomba-toothbrush thing. It is basically a toothbrush without the handle....just a little brush that goes in your mouth and moves around on it's own to brush your teeth. There would also be a detachable handle that you could put on it if you want to use it in manual mode. How does it stay in your mouth and on your teeth? Not sure yet, that is what R&D is for.