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Background/purposeAvailable knowledge about the effect of solvent-type etch-and-rinse adhesives on dentin bond strengths achieved with ethanol-wet bonding is limited. Therefore, this study was conducted to determine 24-hour bond strengths of etch-and-rinse adhesives with different solvents to acid-etched dentin saturated with either water-wet bonding or ethanol-wet-bonding techniques.Materials and methodsSixteen bovine incisors were divided into the following four groups based on the bonding techniques and adhesives used: Group I, water-wet bonding + Single Bond 2 (water/ethanol-based adhesive); Group II, water-wet bonding + Prime & Bond NT (acetone-based adhesive); Group III, ethanol-wet bonding + Single Bond 2 (water/ethanol-based adhesive); and Group IV, ethanol-wet bonding + Prime & Bond NT (acetone-based adhesive). After etching and rinsing, dentin surfaces were either left moist with water or immersed in ethanol. Following adhesive application and composite buildups, bonded teeth were sectioned into resin–dentin sticks for microtensile bond strength testing, which was conducted after storing the sticks in water for 24 hours. Data were analyzed by two-way analysis of variance and Tukey test (P = 0.05).ResultsMean bond strength values (MPa) and standard deviations at 24 hours were as follows: Group I, 34.41 (12.6); Group II, 41.62 (11.8); Group III, 43.52 (13.8); and Group IV, 41.68 (9.1). No significant difference in bond strength was observed between different bonding techniques for both adhesives (P > 0.05).ConclusionSimplified ethanol-wet bonding exhibited similar 24-hour bond strength mean values for both ethanol/water-based and acetone-based etch-and-rinse adhesives. Therefore, solvent content may not interfere with bond strength to ethanol-saturated dentin

Effect of simplified ethanol-wet bonding on microtensile bond strengths of dentin adhesive agents with different solvents