Forget strips, gels, and pastes. Your next tooth-whitening and repairing substance might well be a new powder developed by Shanghai researchers. You'll want to use it with an electric toothbrush ...

Even with regular brushing, teeth can become stained from genetic factors or consuming foods and drinks like tomatoes and ...

If you’ve never heard of tooth powder, you’re not alone. This age-old product was the precursor to toothpaste, but it fell out of favor decades ago. Even though it’s hard to find on store shelves, ...