Speaking of fashion, teeth whitening is one of the hottest craze in town. It is so with the abundance of over-the-counter, teeth-whitening kits that makes pearly smiles affordable to many. However, local dentists say fashion still should take a backseat to function. Teeth whitening is fine for appearances, but it takes more than that for a truly healthy smile. And for those with problems such as cavities, gum disease and sensitivity, vanity may prove painful. People who have a lot of cavities or mouth ulcerations of any kind need to be really careful as far as bleaching. Having a dentist oversee things is certainly better than just having them pick something off the shelf that might be harmful to them.