Top Foods That Deliver White Teeth

Everyday food is the secret to maintaining pearly whites without a visit to the dentist.
3:00 | 11/14/12

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Transcript for Top Foods That Deliver White Teeth
Thank you, george. Now, two secrets for brightening your smile. Whitening your teeth at the dentist does not come cheap. What if we told you that the key to sparkling pearly whites might be in your kitchen? Becky worley shows us. Reporter: The pursuit of the perfect smile. To get those pearly whites extra white, dental and drugstore treatments can be expensive. Awkward. But secret foods to make teeth sparkle? Actually, easy. They're already in my kitchen. Let's start with snacks. Like some of your favorite fruits and vegetables. Apples, celly and carrots. Theyork by scrubbing your teeth clean with their crunchyness. They stimulate the saliva in your mouth. The saliva will wash away plaque. Reporter: And mint leaves contain min tall compounds that can cover your teeth and protect them from stains. This stuff is preventing stains. Great excuse for wine and cheese. Snack on a cube before drinking your wine. The cheese coats the teeth with a film that guards against stains. Now, for my very unscientific experiment. Wine, cheese. My right front teeth have cheese on them. The left, don't. The left side has more spots from wine residue. Now, for home remedies. Try rubbing the white part of an orange peel on your teeth. Now, add a little lemon juice to baking soda. You get your own whitening kit. The baking soda can be very abrasive. If you are going to do this, it should be very limited. Reporter: Are my teeth whiter? You be the judge. At least I ate healthy, had delicious hors d'oeuvres. And now, fresh breath. For "good morning america," becky worley, abc news, oakland, california. Look at those pearly whites. We're joined by greta monahan. Thanks for coming. You brought examples. These foods are naturally abrasive. Becky touched on apples and core rats and celery. All of the raw vegetables, they scrub your teeth. Think of them as nature's toothbrush. And you will see a difference? Absolutely. They scrub away and work while you're eating. Why would we have red wine in a whitening segment? It's one of the biggest culprits next to coffee. One of the things she was talking about is hard cheese. Milk and dairy products have lactic acid, lara. Like a skin peel, they exfoliate your teeth. Dairy products being, if you eat a piece of cheese before, you're protecting the red wine. But also on the milk, add it to your coffee and it protects the protective film on your teeth so it's loose for staining. That's a great tip. These are the blockers. And the green leafy, is also, not many people realize. But kale, broccoli, base basil, contains a film on the teeth. Normally, when you say film on the teeth. It sounds nasty. But this is a good thing. Here, you have the acid group. These are the lifters. Lemons and oranges, all lift off, just like your dishes. What you may not know is strawberries contain acids. Rub them on. Eat them. They're great for your teeth. We want to thank you, greta, for being with us. Coming up, a scathing review for guy fieri's restaurant just

This transcript has been automatically generated and may not be 100% accurate.

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