0It Must Be Stopped!Excessive Tooth Whitening Is Freaking Us Out.Updated Jul. 14, 2017 6:15PM EDT / Published Oct. 20, 2008 11:19AM EDT David Kohl/AP Joe BidenDavid Kohl/AP George HamiltonSara De Boer/Retna Chuck NorrisGerald Herbert/AP Hilary DuffFrederick M. Brown/Getty Jerry OrbachJames Devaney/WireImage/Getty Britney Spears' SonDarren Banks/Dean Chapple/Splash News Elliott YaminEvan Agostini/Getty X Factor ContestantsVittorio Zunino Celotto/Getty Dogs Lou DobbsEvan Agostini/Getty
Joe BidenDavid Kohl/AP George HamiltonSara De Boer/Retna Chuck NorrisGerald Herbert/AP Hilary DuffFrederick M. Brown/Getty Jerry OrbachJames Devaney/WireImage/Getty Britney Spears' SonDarren Banks/Dean Chapple/Splash News Elliott YaminEvan Agostini/Getty X Factor ContestantsVittorio Zunino Celotto/Getty Dogs Lou DobbsEvan Agostini/Getty