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Are whitening toothpastes a bright idea?
It's hard to believe, but there was a time not long ago when everyone walked around (in public!) with naturally colored teeth. Today, with so many whitening gels, strips and trays out there, yellowish grins aren't as common — nor the natural look as appealing — as they used to be.
By Chris Woolston, Special to the Los Angeles Times
July 4, 2011