James Dyson Sold Us on a $400 Hair Dryer. Now He's Trying a $499 Toothbrush. — WSJ
By Katie DeightonThe inventor James Dyson has a winery, a knighthood, an English country pile, and an estimated net worth of more than $15 billion. He also has a sense of dread when it comes to trips to the dentist office."Although I'm quite a religious flosser, she always gets out the pickax and s…