You brush, you floss, you get your six-month checkup, and yet up pops a cavity, or major yellowing, or throbbing pain. While some of our teeth woes are genetic, we don't always get their care right, which can lead to serious problems—from an increased risk of preterm delivery if you're pregnant to heart disease. Worry not: It's easier than ever to treat your mouth right. These are the very best ways to keep your 32 chompers in top shape.