Attin T et al [ 21 ] in their study of systematic review on the effect of bleaching on restorative materials found no evidence of negative impact of bleaching on existing restorations. In the present study, among all resin composites examined, after 24 h of immersion in distilled water, differences between Rok and other two materials were highly significant.
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Effect of a home bleaching agent on the fracture toughness of resin composites, using short rod design.
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