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"I bought invisalign for straightening my teeth and part of the offer was free zoom whitening.\r\nConsidering how much invisilign costs, it was nice to have the offer, but is it worth $450? No,   I have used trays for yrs and my teeth had just been cleaned.\r\nI was fine for the first three 15 minute sessions. Pain was never discussed but tooth sensitivity was. I have sensitive teeth anyways but..."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.realself.com/review/zoom-whitening-was-major-pain>