In vitro bonding efficacy of three restorative materials to primary dentin using a one-bottle adhesive system

The shear bond strength to primary dentin of a new single-bottle adhesive with three restorative materials (composite resin, compomer, and amalgam) was evaluated. Statistical analysis of the data showed significant differences among the means of the groups (ANOVA, p < 0.05). Composite resin and compomer were not significantly different from each other but both were statistically higher than amalgam. The fracture mode was not related to the shear bond strength values. The mean shear bond strengths obtained in this study were statistically comparable to those obtained in a previous study which used the same experimental design but included permanent teeth.