Patent ID: 6036493
Filing Date: 2000-03-14
Classification: A61K,A61Q

Abstract:
A dental bleaching system composed of two separated components adapted to be dispensed from a single dispenser as a mixed viscous dental bleach composition comprising a first component having a viscous gel like consistency consisting essentially of hydrogen peroxide and fumed silica and a second component having a viscous gel like consistency comprising an aqueous composition including a gelling agent, catalyst, an alkaline pH buffer, a redox color indicator adapted to oxidize in the presence of a peroxide from a visible color into a neutralized color and a second dye stable in the presence of a peroxide with the concentration of the redox color indicator selected relative to the second dye such that the redox color will be predominant during the bleaching operation and the second dye will be predominant at the end of a controlled time period corresponding to when the bleaching treatment may be discontinued.