Cavities are no fun, which is a good reason to welcome with open arms any technology that claims to make tooth brushing more efficient. The Ultreo ultrasonic toothbrush promises to use fancy-pants stuff such as "ultrasound waveguide technology" and "precisely tuned sonic bristle action" to get all the cheeseburger and cola leftovers out of your mouth.

For $150, you have to wonder if this is really that much more effective than a regular brush. I mean, do we really need ultrasonic waves bouncing around in our mouths? I guess that all depends on whether or not you think this might keep you out of the dentists chair for an extra appointment. If so, it might just be well worth that hefty price tag. — Adam Frucci

Ultreo, via Engadget