Cool Toothbrush

We all use this thing called a "toothbrush" everyday right?^.^ Because it basically helps us to clean and prevent damages on our teeth. But, are the brushes really enough to lessen the cavities? Well, Japan thinks it's not.^.^

I came across a site and this is what i saw. Yes, what you see is right. It's a toothbrush that has LED below the brushes.^.^ According to Japan, the LED somehow helps with the illness prevention of the teeth. Why? That i do not know.^.^ But maybe some scientists may have good explanations about this. Just like UV rays that help sanitize things or something like that. c",)