I feel like this shouldn’t need any comment. When I saw this tweet my first thought was: @DrOz has been hacked! I mean, really? Raisins for white teeth? This is one of the most ludicrous suggestions I’ve ever heard. I’m fairly confident that any dentist would agree with me when I say that raisins will not whiten your teeth. Raisins, and other dried fruit, actually promote tooth decay as they’re sweet and sticky.
Besides all that, will antioxidants whiten teeth? Not that I’m aware of (that’s not to say they won’t). In fact, hydrogen peroxide (one of the most common whitening ingredients in toothpastes, mouthwashes, and home-whitening kits) is actually an oxidizer.