In Situ Effect of 10% Carbamide Peroxide on Resin‐Dentin Bond Strengths: A Novel Pilot Study

Abstract

The results of this study suggest that nightguard (home) bleaching with 10% carbamide peroxide for 2 h/d for 21 days significantly affects resin-dentin bond strengths when dentin is exposed to bleaching material. CLINICAL SIGNIFICANCE The findings of this novel pilot study imply that dentin bonding, such as to exposed root surfaces and cervical areas of the teeth, should not be performed immediately after bleaching with 10% carbamide peroxide.

Effects of bleaching gels on the surface microhardness of tooth-colored restorative materials in situ

“…Two previous j o u r n a l o f d e n t i s t r y 3 6 ( 2 0 0 8 ) 2 6 1 -2 6 7 studies, using 10% CP bleaching, also employed this strategy. 20,21 However, to date there has been no published research on the effects of the tray-based bleaching system on the surface microhardness of restorative materials in situ.…”

Effect of a 10% carbamide peroxide on wear resistance of enamel and dentine: In situ study

“…Among the described protocols in the literature, most of them adopted the use of a removable palatal appliance containing slabs of enamel 13,17,19 or dentine. 20,23 Some disadvantages about this protocol may be identified such as the difficulty to ensure that all volunteers followed it suitably; the fact that did not represent the erosive and abrasive challenge that occurs in the oral cavity, as the appliance is removed during meals and hygiene procedures and the abrasive effect that the tongue can exert on dental tissues, increasing the overall loss of tooth substance. 24 Moreover, another important constraint about bleaching experiments in which removable palatal devices were used 17,19,20 is that it is impossible to reject the probability of contact of the bleaching gel with the control specimens or, to avoid the residual effect of bleaching gel in the control group, considering that the slabs were present in the same device.…”

Effect of Bleaching on Color Change and Refractive Index of Dental Composite Resins

“…In particular, the organic matrices of resin composites are prone to chemical alteration induced by the acidic component of bleaching agents. This may then compromise the color matching of resin composite restorations to adjacent tooth structure, giving a reason for their replacement 15,24) . In color assessment, the choice of an appropriate method is important because of the path length of incident light in the material tested 21) .…”