How to Brush Your Teeth the Right Way
Adam Rifkin stashed this in FLOSS!!!
It's Bass brushing, invented a long while ago by the frontiersman dentist with on of them newfangled microscopes. I use "modified Bass" which incorporates this basic motion for most teeth, but relies on a briefer traditional brushing for a few teeth that are hard to reach with it, and uses a kind of upsweep or downsweep after each 10 seconds of having the brush in the same place, as pictured in the video.