Taweesak Prasansuttiporn, Ornnicha Thanatvarakorn, Teerapong Mamanee
Oct 1, 2020
Citations
0
Influential Citations
8
Citations
Journal
International Journal of Adhesion and Adhesives
Abstract
Abstract This study aimed to evaluate the effect of a reducing agent containing p-toluenesulfinic acid sodium salt (Accel®) and plant-extract antioxidant (rosmarinic acid solution) on the bonding durability of a self-etch adhesive to caries-affected dentin with and without smear layer-deproteinizing with NaOCl solution. The caries-affected dentin were assigned to pretreatment of smear layer-deproteinizing with NaOCl solution or none, then subdivided to reducing agent/antioxidant treatment with p-toluenesulfinic acid sodium salt or rosmarinic acid solution or none. After bonding with 2-step self-etch adhesive and restoring with resin composite, the specimens were stored in artificial saliva for 24 h or 1 year. The microtensile bond strength (μTBS) were analyzed by three-way ANOVA with post-hoc Tukey's test and t-test (p 0.05), with preservation of collagen-fibril integrity within authentic hybrid layer. Therefore, the additional application of p-toluenesulfinic acid sodium salt and rosmarinic acid solution after smear layer-deproteinizing with NaOCl could improve initial and long-term bond strengths of a self-etch adhesive to caries-affected dentin.