Shear bond strength of self-etch and total-etch adhesives to bovine enamel and dentin

Abstract

Purpose: To evaluate the shear bond strength of a self-etch adhesive and an etch-and-rinse adhesive when bonded to bovine enamel and dentin.Methods: The labial surfaces of 28 bovine mandibular incisors were wet ground to achieve a flat enamel or dentin surface. A 1-step self-etch adhesive and a 3-step etch-and-rinse adhesive were bonded to enamel or dentin according to the manufacturer's instructions (Adper Easy One and Adper Scotchbond, respectively). A composite resin cylinder (Filtek Z350 XT) was built upon the adhesive layer using a silicon mold (2 mm in diameter × 3 mm high). The specimens were stored in 37°C distilled water for 24 h. The bond strength was measured by a universal testing machine at a crosshead speed of 1.0 mm/min. Student's t-test was used to compare bond strength values between adhesives at the 95% confidence level.Results: For the enamel specimens, Adper Scotchbond had significantly higher values of bond strength than Adper Easy One (P=0.007). For the dentin specimens, there were no statistically significant differences between adhesives (P=0.12).Conclusion: Adper Easy One showed lower shear bond strength than Adper Scotchbond on enamel. For dentin, Adper Easy One showed bond strength similar to Adper Scotchbond.

Bond Strength Evaluation of Two Adhesive Systems in Fiberglass Posts Cementation

“…SBMP has a better degree of conversion of monomers, resulting in superior physical and mechanical characteristics that favor micromechanical entanglement with the collagen matrix. This improves the bond strength when compared to self-etch adhesives and corroborates the results described in the literature [5,6].…”

The influence of acid etching or chitosan dentin surface treatments on dentin wettability and shear bond strength of self- etch adhesives

“…Shear bond strength (SBS) is a mechanical test of the adhesive interphase that can provide an indication of the bond integrity between esthetic restorations and dentin surface. Reliable results were achieved in previous researches studying dentin-adhesives interphase (12)(13)(14)(15)(16)(17)(18)(19) .…”

Comparative in vitro study of the different orthodontic brackets using two etching techniques

“…In our study the highest strenght forces were obtained when using the etch and rinse technique.By enlarging the adhesive surface and creating microretentions at enamel level, adequate conditions were created for adhesive penetration [1,2].…”

“…The processinvolves the enamel, the adhesive and the bracket surface, therefore, the analysis of the twointerfaces: enamel-adhesive and adhesive-bracketis an important subject of research [1]. The different physical and chemical properties of these components could establish the adhesive conditions in orthodontics [2].…”