Home dental bleaching techniques were first introduced in the 1990s [1,2], and have become a common self-administered procedure due to their immediate and notable efficacy as well as their low cost. Dental bleaching agents often contain hydrogen or carbamide peroxide, whose effective lightening action is offset by reports of adverse effects on tooth structure and dental materials [3], especially when they are used repeatedly at high concentrations or applied over long periods of time. Reported adverse effects include softening, roughness, cracks and unsightly color changes [4]. Because composite and porcelain materials are widely used in dentistry [5], it is important to identify the effects of home bleaching on their integrity, longevity and appearance.