Even though almost everyone in this world brush and floss their teeth regularly, there are cases when people feel their teeth have lost their natural whiteness. This is where the dental procedure of teeth whitening is taken in use. The change in color of teeth from white to less bright has several different reasons behind them. Unhealthy eating habits, addiction to tobacco and cigarettes, old age as well as metal trauma can lead to staining of teeth. But with the help of this dental procedure, expert dentists remove stains from teeth to the possible extent. In this process, teeth whitening product which is known to break stains and decolorizes them make the stains less visible. This brings up the natural color of the teeth and makes them look brighter with their restored smiles. Furthermore, it should be known that teeth whitening do not work on all teeth as it depends on the type of discoloration.