This research seeks to ascertain the impact of hydrogen peroxide bleaching gel on the color stability and roughness of nano-filled composite restoration. The most important aesthetic elements of restoration are surface gloss, surface roughness, and color. It has been claimed that saliva, food ingredients, and beverages may compromise the integrity and aesthetics of dental composites, causing them to degrade in the mouth. For aesthetic restorations including anterior and posterior teeth, resin composites have taken the place of porcelain as the preferred material. Resin composites are now the preferred material for aesthetic restorations including both anterior and posterior teeth due to their better physical and adhesive qualities. Composites now play a significant part in contemporary restorative dentistry due to the rising desire for aesthetically pleasing restorations in recent years. Composite restorations are viewed as the major alternative for repairing front teeth as a result of the phase-down of dental amalgam, and its use in posterior restorations is expanding rapidly.