Prevention is the best medicine for your smile. Although fillings, crowns, and professional whitening can make your teeth stronger and brighter, it's better (and cheaper!) to avoid cavities and stains in the first place, by brushing, flossing, and—last but not least—eating right. As the following guide explains, the food we eat can have a big impact on our teeth.
Fortunately, foods like candy that don't always play nice with our teeth are generally harmless in moderation. "It's when we excessively use one thing that [it] can become a problem," says Matthew Messina, an Ohio-based dentist and spokesman for the American Dental Association.