Some foods can help: crispy apples and celery mildly polish surface areas; while not a substitute for whitening

https://telegra.ph/Foods-That-Spot-Your-Teeth-and-How-to-Fight-Them-04-17

Some foods can assist: crunchy apples and celery slightly polish surface areas; while not an alternative to whitening, they support a cleaner, brighter-looking smile.