The tooth whitening is one of the most requested aesthetic treatments because it makes a great cosmetic change in the face and we can look better without a complex and also can have a beautiful smile. However, until very recently, tooth whitening systems were expensive, slow, unsatisfactory and aggressive. Today, thanks to the cutting-edge technologies applied to the dental aesthetics, some treatments have been achieved with a high degree of satisfaction of both patient and professional, and in just one session of twenty-forty minutes, it can whiten your teeth from four to twelve tones.,Why the teeth lose their natural color?,Teeth like the rest of our body is aging and the passage of time alter its color. This discoloration can be caused by several factors:,Recommendations before applying a tooth whitening treatment:,The real revolution in new tooth whitening system is:,The tooth whitening can be done in two types of teeth via gel:,Vital teeth: HEALTHY – Those with nerves. Whitening gels are applied on the tooth surface, either directly or through plastic buckets.,Non-vital teeth: DEAD – For those who do not have nerve teeth, whitening is performed from inside the teeth, the whitening gel into the cavity where previously housed the dental pulp (pulp cavity).