Optiva
#2, 1996 / #1, 1997 / #81, 1998 / #496, 1999
This electric toothbrush is known for its speed, producing more than 30,000 strokes per second, and it has been the subject of more than 140 clinical studies. Started in 1988 by entrepreneur Gerald Giuliani and two University of Washington professors, Optiva was purchased by Royal Philips in 2000.