Dental bleaching is also known as teeth whitening. This is a most common procedure in the field of cosmetic dentistry. Most individuals with healthy white teeth also used this teeth whitening system for bright smile. This system can also used as home tooth whitening, which is wearing customized thin, flexible trays (one for lower teeth and one for upper teeth) for a couple of minutes will helps to get a shiny white teeth. Teeth whitening also helps to get rid of discolored or yellow teeth and your tooth stains immediately within 30 minutes.