Abstract
ObjectiveTo investigate experimental eggshell powder (ESP) solution application effect on shear bond strength (SBS) test timing of bulk-fill resin composite to bleached enamel.MethodsEighty bovine-extracted anterior teeth were alienated to eight groups (n = 10), representing shear bond strength test timing periods (immediate or delayed) and the remineralizing agents investigated (MI paste Plus and ESP solution). Enamel surfaces were bleached using in-office chemical bleaching agent and the two remineralizing agents were applied then self-etch adhesive and bulk-fill resin composite were performed at 24 h and 14 d before SBS test was done. One-way ANOVA followed by Tukey post hoc test was performed for statistical analysis.ResultsThe control groups showed the highest mean values, while the bleached enamel groups recorded the least mean values. ESP bleached enamel group recorded a significantly higher mean SBS values than MI paste Plus bleached group. Delayed SBS groups showed higher mean values than immediate SBS groups except for control group.ConclusionsESP had a positive and significant effect on SBS of bulk-fill resin composite to bleached enamel surface. Delaying the bonding procedure and restoration of the bleached teeth using resin composite restorations results in a better bond durability.
Highlights
Teeth bleaching has been playing a major role in cosmetic dentistry in the recent years
Group A (23.89 ± 0.51) had the highest mean value, while the least mean value was recorded for group B (7.33 ± 0.34)
Group A (23.89 ± 0.51) had the highest mean value while the least mean value was recorded for group B (19.33 ± 1.21)
Summary
Teeth bleaching has been playing a major role in cosmetic dentistry in the recent years. It represents one of the main patient’s desires seeking a beautiful smile. Teeth bleaching had been proven to be safe, cost-effective as well as the most conservative method (Dutra et al 2017). It has been considered the first choice for treating discolored teeth. Sometimes it had to be used in conjunction with resin composites to achieve more esthetic results (Borges et al 2007). It was reported that eggshell could be used as a remineralizing agent in the form of a solution as its constituents’ mineral ions could diffuse into the superficial enamel surface causing obstruction to the surface porosities (Haghgoo et al 2016)
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