Who may benefit from teeth whitening?

Everybody who wants a brighter whiter smile should use iWHITE's patented whitening system. If you smoke, drink wine or coffee often, have teeth that are aging, iWHITE is the perfect way, safe and easy to use application to whiten teeth. However, stains caused by medication such as Tetracycline are usually unresponsive to dental whitening. Crowns, veneers and fillings do not whiten, but won't get affected by the treatment.