Microtensile bond strength of resin cement primer containing nanoparticles of silver (NAg) and amorphous calcium phosphate (NACP) to human dentin

Abstract

PURPOSEThe purpose of the current study was to evaluate the effect of incorporating nanoparticles of silver (NAg) and amorphous calcium phosphate (NACP) into a self-etching primer of a resin cement on the microtensile bond strength of dentin, regarding the proven antibacterial feature of NAg and remineralizing effect of NACP.MATERIALS AND METHODSFlat, mid-coronal dentin from 20 intact extracted human third molars were prepared for cementation using Panavia F2.0 cement. The teeth were randomly divided into the four test groups (n=5) according to the experimental cement primer composition: cement primer without change (control group), primer with 1% (wt) of NACP, primer with 1% (wt) of physical mixture of NACP+Nag, and primer with 1% (wt) of chemical mixture of NACP+Nag. The resin cement was used according to the manufacturer's instructions. After storage in distilled water at 37℃ for 24 h, the bonded samples were sectioned longitudinally to produce 1.0 × 1.0 mm beams for micro-tensile bond strength testing in a universal testing machine. Failure modes at the dentin-resin interface were observed using a stereomicroscope. The data were analyzed by one-way ANOVA and Tukey's post-hoc tests and the level of significance was set at 0.05.RESULTSThe lowest mean microtensile bond strength was obtained for the NACP group. Tukey's test showed that the bond strength of the control group was significantly higher than those of the other experimental groups, except for group 4 (chemical mixture of NACP and NAg; P=.67).CONCLUSIONNovel chemical incorporation of NAg-NACP into the self-etching primer of resin cement does not compromise the dentin bond strength.

The Micro-Shear bond strength of different cements to commercially pure titanium

“…substrates, a wide range of esthetic shades, favorable mechanical properties, a high strength, an excellent retention property, and poor solubility in oral environments (9,10) turn resin cements into the first option in the cementation of indirect restorations. According to the clinical steps required to prepare the substrate prior to cementation, the resin cements were categorized in three sub-groups, including etch-and-rinse, self-etch, and self-adhesive luting agents.…”

Developing a Novel Enamel Adhesive with Amorphous Calcium Phosphate and Silver Nanoparticles to Prevent Demineralization during Orthodontic Treatment

“…Figure 4 demonstrates that the control group without NPA had a high number of bacterial colonies. The number of bacterial colonies decreased significantly after the addition of 25 μg/mL NPA compared with the control group ( p < 0.001) ( Figure 4 B), demonstrating that the NPA fillers have good antibacterial properties at low concentrations [ 26 ]. No colonies were present when the bacterial suspension was diluted 10 3 times.…”

In Vitro Investigation of Shear Bond Strength of Titanium Alloy Bonded to Monolithic Zirconia Prepared Via Different Surface Roughening Methods Using Different Cements

“…It has been reported that conventional and resin cements have been used in the cementation of hybrid abutments. (9,10). Resin cements are the material of choice for the cementation of fixed implant restorations due to their high bonding ability with metals and ceramics, wide aesthetic color options, favorable mechanical properties, high strength, superior retention, and low solubility in the oral cavity (9,10).…”

“…(9,10). Resin cements are the material of choice for the cementation of fixed implant restorations due to their high bonding ability with metals and ceramics, wide aesthetic color options, favorable mechanical properties, high strength, superior retention, and low solubility in the oral cavity (9,10). Moreover, in the presence of multifunctional monomers such as 10-methacryloyloxydecyl dihydrogen thiophosphate (10-MDTP) and 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP), the surface wettability of the material increases and crosslinking occurs with the methacrylate groups of the resin cement (11) Various surface modification methods such as sandblasting, tribochemical silica coating, hydrophilic acid etching, and laser-based methods are recommended to form a strong mechanical and chemical retention between the resin cement and the ceramic (11,12).…”