Elsewhere, in various forms of media, what can and how to whiten teeth occupies the most exposure. In fact, teeth whitening is the most-requested cosmetic dental service today. Many people now have whiter teeth than ever because of the so many teeth whitening system options available. Basically, teeth bleaching or whitening is considered a safe procedure, but problems can arise when people stop following the directions and start thinking more is better. Overbleaching can cause tooth sensitivity and gum inflammation. It also can cause teeth to look translucent at the edge a potentially permanent change. Over-whitening also makes it hard for dentists to match shades when doing fillings or crowns. Some whitening toothpastes can wear down the tooth's enamel so we should be careful in choosing for a brand of toothpaste before it can give your teeth and gums more harm than good.