Sonicare, a dental products company, was founded in 1987 by entrepreneur David Giuliani and University of Washington professors David Engel and Roy Martin when they began promoting a dental hygiene device based on sonic technology. Sonicare toothbrushes, which vibrate at 31,0 ... Read More 00 strokes per minute, feature replaceable heads and chargers. The most popular Sonicare toothbrush is the DiamondClean brush, which comes with a glass charger and two brush heads. The DiamondClean brush is proven to whiten teeth twice as well as a manual brush. The Flexcare Platinum rechargeable toothbrush features nine brushing options and an intuitive pressure sensor that alerts users when they brush too hard. Two built-in timers encourage thorough brushing. The Sonicare 30-Second Smile Oral Care System, a revolutionary toothbrush, features micro-brush heads that clean all areas of gums and teeth simultaneously, resulting in shorter brushing time. A built-in timer beeps when it’s time to switch sides, and the waterproof design makes it easy to use in the shower.