Colgate Tag

In a great world, brushing your teeth routinely could be enough to maintain your set of pearly whites, well, pearly and white between routine dentist appointments. But alas, for a lot of us (particularly those of us with a serious coffee habit), that is just not the case. We feel moved to hit up the local drugstore for whitening toothpaste and coverings to clean up our smiles — perhaps without giving much thought to what those products actually are and the way they work."Tooth enamel [is] a crystal," Matthew J. MessinaDDS, a board-certified, Ohio-based dentist, and spokesperson for the American Dental Association (ADA), says. "When you were to take a look at tooth enamel under a extremely powerful microscope, [the...