Cross-linked dry bonding: A new etch-and-rinse technique

Abstract

Objective To determine if acid-etched, cross-linked dentin can be dehydrated without lowering bond strength below that of cross-linked wet-bonded dentin in vitro. Methods Using extracted human third molars, control acid-etched dentin was bonded with Single Bond Plus, using either the wet- or dry-bonding technique. Experimental acid-etched dentin was treated with 5 mass% grape seed extract (GSE) in different solvents for 1 min before undergoing wet vs. dry resin-dentin bonding with Single Bond Plus. Completely demineralized dentin beams were treated with 5% GSE for 0, 1 or 10 min, before measuring stiffness by 3-point flexure. Other completely demineralized beams were treated similarly and then incubated in buffer for 1 week to measure the collagen solubilization by endogenous dentin proteases. Results 24 hr microtensile bond strengths (μTBS) in wet and dry controls were 53.5 ± 3.6 and 9.4 ± 1.8 MPa, respectively (p < 0.05). 5% GSE in water gave μTBS of 53.7 ± 3.4 and 39.1 ± 9.7 MPa (p < 0.05), respectively, while 5% GSE in ethanol gave μTBS of 51.2 ± 2.3 and 35.3 ± 2.0 MPa (p < 0.05). 5% GSE in 5% EtOH/95% water gave wet and dry μTBS of 53.0 ± 2.3 and 55.7 ± 5.1 MPa (p > 0.05). Cross-linking demineralized dentin with 5% GSE increased stiffness of dentin and decreased collagen degradation (p<0.05). Significance 5% GSE pretreatment of acid-etched dentin for 1 min permits the dentin to be completely air-dried without lowering bond strength.

The recovery effect of proanthocyanidin on microtensile bond strength to sodium hypochlorite‐treated dentine

“…, Zhou et al . ). This reaction may improve the quality of the hybrid layer, increasing dentine bond strength (Nuthong et al .…”

“…, Zhou et al . ). Interestingly, use of PA 15% for 10 min on NaOCl‐treated dentine not only recovered but also increased the μTBS when compared with the blank control group in which NaOCl and PA were not applied.…”

Effects of a modified cold atmospheric plasma jet treatment on resin-dentin bonding

“…Loss of the support of the minerals will cause a subsequent collapse of the demineralized dentin matrix after air-drying. Therefore, an etch-and-rinse dentin bonding system has an absolute requirement for water to keep the dentin collagen from collapsing during the bonding process 22,23) . The demineralized dentin surface needs to show "visible moisture" before the application of the adhesive resin, which gives the 'wet-bonding technique' a very high technical complexity.…”

Bond Strength and Cytotoxicity of a Universal Adhesive According to the Hybridization Strategies to Dentin

“…The application of adhesive systems to dry dentin following the SE strategy has been considered a very promising protocol, since monomeric phase separation and hydrolytic degradation could be partially minimized (6). These systems claim to possess better biological behavior, since the smear layer is not removed, thus reducing the transdentinal diffusion of uncured resin monomers (2).…”