What is the best type of teeth whitening product to buy over the counter?

I'm trying to find out what kind of teeth whitening product delivers the best results?
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I just answered this a little bit ago to someone else's questions, so here's the answer :) The Crest Whitestrips are the best ones from the drugstore. I wouldn't suggest getting the ones that dissolve (just seems like a strange thing to have everything dissolve in your mouth!) or the ones that are like trays from the drugstore because when the trays are over sized/too big in the mouth they end up covering the gums and can actually burn the gums... painful. I've had a couple patients come to my office with that issue! Don't do the zoom whitening in an office either.... too much whitening all at once. Not only is it not good for the teeth, but it can make them SO SENSITIVE it's ridiculous. I've ALSO had patients that have gone to other offices (we don't do zoom whitening at mine) to have it done and have been in honestly severe pain for a few days to a week. It makes the teeth sooooo sensitive. With whether they work or not... everyone is different. Usually (if you use them as you're supposed to!) they give a big enough difference that you're satisfied with. If you're not satisfied you can have trays made at your dental office but they're very expensive and not covered by insurance. So I always suggest Whitestrips first.
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