Dentin bonding performance of the new self-adhesive resin composite

This study aimed to evaluate the initial bond strength to dentin with a new self-adhesive resin composite containing a hydrophilic amide monomer using a micro tensile bond strength (μTBS) test. Specimens were ground with #600 SiC. Including a Cleafil Universal Bond Quick ER (UBQ) and resin composite, a new self-adhesive resin composite (SA-100R; SAR), and a commercially self-adhesive resin composite (Constic; CON), were tested. Adhesion procedures were conducted according to each manufacturer's instructions. Specimens were stored for 24 h in water at 37ºC, then cut into a 1.0×1.0 mm beams. μTBS tests were conducted at a cross-head speed of 1.0 mm/min. Data were statistically analyzed using one-way ANOVA and Bonferroni correction. SAR exhibited values significantly higher than CON (p<0.05), probably due to the improved dentin diffusion by the amide monomer. SAR exhibited stronger adhesion than the CON, shows a high potential for use in various clinical applications, e.g., home-visit dental care.