Evaluation of a new self-adhesive resin cement

Objectives: The potential of two experimental self-adhesive resin cements were evaluated against two commercially available self-adhesive resin cements in dark and light cured modes. Methods: Disc-shaped specimens (11 mm diameter, 1 mm thickness) were tested in bi-axial flexure to determine the strength at short- (0.5, 1, 4, 24 and 48 h) and medium-term (1, 4 and 12 w) time points. In addition, water sorption, water solubility, diffusion coefficients and Vickers hardness measurements were determined following the short- and medium-term water immersion on the disc-shaped specimens. One- and two-way analyses of variance (ANOVA) were made in software (SPSS, V 12.0.1, Chicago, IL, USA) using a critical significance level of P=0.05, guided as necessary by Tukeys correction in multiple partial analyses of the mean strength, water sorption, water solubility, diffusion coefficients and Vickers hardness measurements for the time points investigated in dark and light cured modes. Results: No significant differences in the strength, water sorption, water solubility and Vickers hardness measurements were evident between the self-adhesive resin cements examined. Differences occurred between the mode of curing (either dark or light cured). Conclusions: The current study shows the experimental materials have similar performance in terms of flexure strength, water uptake and hardness with commercially available self-adhesive resin cements.