This next evolution in the toothbrush will undoubtedly cause much hatred within the Crest and Colgate companies. A Japanese company called Shiken has made a prototype solar-powered toothbrush that would eliminate the need to squeeze out a bit of toothpaste every time you brush your teeth. The Soladey-J3X is a toothbrush that holds a titanium dioxide rod in the brush tip underneath the bristles. When you put the brush into your mouth you get the bristles wet, which also wets the rod which then releases electrons. The electrons then react to the mouth’s natural acid which breaks down the plaque that accumulates from the natural bacteria found inside that hole at the front of your face.