7 Superfoods to Whiten Your Smile

Oranges and pineapples contain an enzyme called bromelain, which acts like a natural stain remover. Research shows that bromelain can help break up plaque, and plaque can lead to some serious tooth decay if it isn't kept in check.

Malic acid is the stain fighter in strawberries that can help your teeth stay that alluring shade of ivory. A fun way to boost their stain-fighting power is to mash up a couple of strawberries, smear them across your teeth, let them sit for a few minutes, and then brush. Just make sure to get all the seeds out from in between your teeth.

Crunching into a nice, juicy apple can do more than satiate your appetite. Fruits and veggies with a crunch act like a natural abrasive scrub for your teeth, which buff away any unsightly stains. These foods also help generate saliva in your mouth, which prevents plaque from developing. (Thinkstock)

Aside from containing calcium, which promotes stronger teeth, dairy products like cheese and yogurt contain lactic acid, which may help protect teeth against decay. The proteins in yogurt can also bind to teeth, protecting them against harmful acids, and chewing on hard cheeses also promotes saliva production in your mouth, helping to fight plaque.