Years of testing were needed only for the design. So Automatic Whitening Toothbrush will adapt on every tooth row. And it even goes along with braces. The brush works with a modified version of the Bass technique. The technique recommended by dentists. Modified to be even more effective. 360° auto-clean. 720 flexible silicone bristles. There will be no blind spots. Only absolute purity. But there is more to it. The key word is Cold Light. A misleading name, because it is not cold at all. In fact it is only referring to the white/blue-ish color of the sonic light. Cold Light is as effective as tooth bleaching, but way more gentle. Absolutely harmless. Used by high-class dentists for years. Now for your household.