The needs and aesthetic standards of modern life have changed. A white smile is essential to us all. With advancing age, the daily use of medication, tobacco, food and drink coloring our teeth, our smile ceases to be glamorous. The simplest way to recover a bright smile is teeth whitening. Whitening is a safe, fast and efficient procedure for changing the color of teeth with relatively low cost. With this procedure the teeth can be made whiter by 2-3 tones on the chromatic scale. After whitening, the color achieved is stabilized during the next two weeks.