Professional teeth whitening restores the original natural shine to the smile. The teeth’s enamel may indeed be subject to colour variations, by absorbing the pigmentation of particular foods or beverages, or due to smoke, while the dentin, the internal part of the tooth that the natural translucency of the enamel makes visible, tends to thicken with time, with the progressive retraction of the pulp, thus rendering the tooth darker and less shiny. Self- whitening techniques allow each patient to chose the intensity of the result, which depends on the concentration of the active principle used and on the duration of the treatment (time during which the solution remains in contact with the teeth). Professional teeth whitening is obtained with the application of a gel containing hydrogen peroxide which is laid on the tooth surface, without corroding it. It´s possible to also make the teeth whitening in the confort of your home in an more progressive way.