At Novadent, we use the advanced POLA OFFICE + teeth whitening system, which is clinically proven to be safe; with long lasting results for the beautiful smile you always deserved. Tooth whitening is a common procedure in general dentistry, but mostly comes under cosmetic dentistry. A child’s deciduous teeth are generally whiter than the permanent teeth that will follow. With age, the color of tooth fades as the changes in the mineral content of the tooth make the enamel more porous.