this solar-powered toothbrush. The brush -- which contains a moisture-activated, titanium dioxide rod in the neck -- works by creating a chemical reaction when light hits the rod, releasing electrons which combine with acids in the mouth to help break down plaque. The toothbrush has a solar panel at its base which transmits additional electrons through a lead wire, making this version more effective that previous iterations. The Soladey-J3X doesn't use toothpaste, but does lead to a, "Complete destruction of bacterial cells," according to Komiyama. Let's just hope no one from Crest tries to bump him off.