The Whiter Teeth Diet
The dark pigments in coffee, wine and fruit juice can discolour your teeth, but Dr Jonathan B. Levine, director for continuing education in aesthetic dentistry at NYU says you can defend yourself in three ways.

1.] EAT CRUNCHY PRODUCE: The fibrous flesh acts like a high-grit scrub brush. “Foods that require a lot of chewing, like apples, celery and carrots, whiten teeth naturally because they’re like stain exfoliants,” he says.
2.] EAT GREENS: “Foods like spinach, broccoli and lettuce contain mineral compounds that create a film over your teeth that acts as a barrier.”
3.] DRINK WATER: Chase a few sips of coffee with a vigorous swish to prevent dark pigments from lingering, Levine says.