<prompt> Which of the following is a main ingredient of denture cleaning powder or tablets?Hydrogen peroxideDetergentsSodium perborateAlkaline compounds  <response>: All the denture cleansing powders and tablets contain detergent, flavouring agent, alkaline compounds and sodium perborate. The main component is sodium perborate. It decomposes in water to form a peroxide solution which inturn breaks down to liberate oxygen. These oxygen bubbles are the ones that remove the debri on the denture surface.Phillips 12th edition page 494 