It's your dentist's job to take good care of your teeth, but after your annual cleaning, it's up to you to make sure your chompers are in tip-top shape. Plaque HD ($15), a plaque-identifying toothpaste to help you do just that.
The idea is simple: the paste "stains" plaque-filled areas a blue shade, identifying the parts of the mouth you tend to accidently skip or avoid. It is similar to those pink tablets you used to chew up at the dentist and spit out, but it is in toothpaste form. I've been using it for over three months now, and it's gratifying washing away the blue from my mouth. I've also noticed my teeth look whiter. — KJ