Can LED lighting really prevent cavities? This toothbrush by Toyo Living has a LED lightbulb in the center so that you can investigate the deepest crevices in your teeth while brushing and (allegedly) keeping your mouth germ-free. It comes with a proprietary toothpaste with translucent properties that let the light shine through it.
It goes on sale in mid-May, Japan only, for about $60. I kinda want one, but not for $60.