The Effects of Tooth Bleaching Agents on Microhardness of Enamel in situ

The demand for conservative esthetic dentistry has dramatically grown and so has the rapid development of new non-restorative treatments for discolored teeth. Nightguard vital bleaching has become one of the most frequently used treatment modality for improving the esthetic appearance of teeth, primarily because of its relative ease of application, the safety of 10% carbamide peroxide bleaching materials, reduced patient chair time, lower cost, and high percentage of success. The recent development of a strip-based system allows for vital tooth bleaching without fabrication of a custom tray. Applied directly to the tooth surface, this thin, flexible polyethylene strip coated with a hydrogen peroxide bleaching gel may afford some in-use advantages relative to tray-based systems. Carbamide peroxide is usually used at a concentration of 10% to 15% in dental bleaching. 10% carbamide peroxide is equivalent in strength to 3% hydrogen peroxide. The hydrogen peroxide, The Effects of Tooth Bleaching Agents on Microhardness of Enamel in situ