What is the best way to quickly and safely whiten teeth?

I am referring to enamel that is stained due to previous use of antibiotics and soda.
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You can pay $200 for whiting trays from your dentist. I've tried a few different products and I would recommend Crest White Strips. They are the best over the counter whitener. In fact, I would recommend using those every six months instead of whitening trays. You can also get your teeth lasered at the dentist for a couple of grand--which will last forever.
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