Oral-B has unveiled the Oral-B iO, the latest addition to the brand’s line of power brushes and one that is designed to improve the tooth brushing experience.    Oral-B invested six years of product research and development to re-imagine and redesign the power toothbrush from the inside out. As a result of input from consumers, the Oral-B iO includes five key pillars of design features and experience capabilities:   Linear Magnetic Drive: Oral-B iO features a frictionless magnetic drive, wh...