However, there is a connection from a family of apatite - a soft, highly soluble at low pH - amorphous calcium phosphate, or acp. He comes into contact with a damaged tooth surface, easily deposited in the areas of defects and in 6 minutes, with an increase in pH, hydrolyzed, becoming a solid crystal of apatite, the same, which is part of the natural enamel. As a result of injury are eliminated, making the tooth surface less porous and susceptible to staining components, significantly reduced tooth sensitivity. Dental treatment becomes necessary much less with the regular use of this compound. Restored enamel better reflects white light, making teeth brighter and shinier - the most desired effect with such procedure as teeth whitening. In Currently only one company was granted the exclusive right to use the rsa in various dental materials. This company - Discus Dental. One of the most exclusive products - teeth whitening system, zoom. On Today, the introduction of RSAs in various dental materials, including whitening zoom, regarded as one of the greatest events in dentistry of the xxi century. These systems are used extensively in the leading dental clinics in Moscow.