A Comparative Study Between the Efficacy of Diode Laser and Nano-chitosan Gel on Activation of Non-vital in- Office Bleaching Agent

The growing demand for white smile between patients has increased over recent years, the development of techniques and improvement of materials permits searching for beautiful natural smile. The discoloration of teeth might be intrinsic, extrinsic, or combined. A variety of commercial bleaching agents is available. The most common substances used are carbamide peroxide or hydrogen peroxide or a mixture of sodium perborate and hydrogen peroxide.