If you are finding that home tooth whiteners are not having the desired effect of whitening your teeth, this is because ordinary toothpaste and whitening strips do not have the strength required to bleach them. It may be time to consider a stronger option of dental bleaching. A special whitening gel is applied to your teeth and is kept in place via a bleaching or whitening tray system which is individually fitted for your mouth. Two types of trays are used, one for for daytime use and one for the night time which employs a slower releasing gel, acting over a few hours. Several trips may be required to achieve the desired effects.