But do we really need a smart toothbrush ... than the battery-powered model. The Colgate Hum is available in a few colors, including green, blue, purple, and black. At the time of this writing ...

At work he really obsesses. Jiménez, director of technology at Colgate-Palmolive, carries buckets of toothbrushes to meetings. He studies the angle of bristles and their corresponding scrubbiness.