Effect of acidic monomer concentration on the dentin bond stability of self-etch adhesives

Incorporation of inorganic fillers into experimental resin adhesives: Effects on physical properties and bond strength to dentin

“…The primers used in this study have already demonstrated efficacy when bonding to dentin [18,21]; conversely, the resin adhesives containing SiO 2 or YbF 3 have not been yet investigated. The presence of SiO 2 or YbF 3 did not affect negatively the bonding ability of the adhesives (Fig.…”

“…First, two primers were formulated by mixing 30 wt% of HEMA (Sigma-Aldrich, St. Louis, MO, USA) or PEG(400)-UDMA (Esstech Inc., Essington, PA, USA), 30 wt% of 1,3-glycerol dimethacrylate (GDMA-P), which was synthesized as previously described [18], 20 wt% of ethanol (Vetec, Duque de Caxias, RJ, Brazil) and 20 wt% of distilled water. Next, two adhesives were formulated based on a 2:1:1 mass ratio of the monomers 2-bis[4-(2-hydroxy-3-methacryloyloxypropyl)phenyl]-propane (Bis-GMA, Evonik, Essen, Germany), triethyleneglycol dimethacrylate (TEGDMA, Esstech), and HEMA or PEG(400)-UDMA.…”

Coumarin-based iodonium hexafluoroantimonate as an alternative photoinitiator for experimental dental adhesives resin

“…Ethyl 4-dimethylaminobenzoate (EDAB) was purchased from Aldrich Chemical (Milwaukee, WI, USA) and absolute ethanol was purchased from Vetec company (Brazil). The acidic monomer 1,3-glycerol dimethacrylate phosphate (GDMA-P) was synthesized as previously described [18]. Structural formula and molecular weight of the initiators evaluated are presented in Table 1.…”

Effect of elastomeric monomers as polymeric matrix of experimental adhesive systems: degree of conversion and bond strength characterization

“…Several factors may hamper one or more of these factors, such as the acidic substance concentration used for etching the substrate [23], the polarity of the adhesive substances applied over the demineralized tooth [24,25], the complete or incomplete volatilization of any solvent retained in the adhesive layer [26], or the light source and intensity used for photo-activate the adhesive [12]. Considering each of these aforementioned factors, the acidic substance used for the experimental materials formulation was the HEMA-P, which has demonstrated satisfactory demineralization ability in a previous study; [11] after the primer's application, the solvent was volatilized by air stream for 10 s, leading to the formation of a shiny layer over the substrate (a solvent-free pellicle was visually formed); lastly, the light source used was the same for all the materials evaluated.…”