A method for bleaching teeth is disclosed. The method includes the formation of a dental bleaching tray in a one step process that includes placing a moldable material adjacent teeth, permitting the moldable material to cure, and removing the cured moldable material which will then serve as a dental bleaching tray. Dental bleach may be placed into the dental bleaching tray and the tray may be placed onto teeth to accomplish bleaching. The entirety of the process may be performed at a patient's home or at a dental office, as desired.