Most people have been brushing their teeth wrong their whole lives. Are you one of them? Dr. Jonathan B. Levine explains why there's no shortcut for healthy teeth and gums.

View Part 2 of Brush Your Teeth Perfectly.

Watch a web exclusive video of Dr. Levine.

Dr. Levine answers your top questions.

You've heard of red wine and white wine but have you ever heard of blue wine? This blue version of wine is given a taste test to see how it compares to the classics.