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Shear bond strength (mean ± standard deviation, MPa) of sound (a) and demineralized (b) enamel. Within each primer/resin cement combination, significant differences between enamel with and without caries infiltrant preconditioning are marked by an asterisk. Significant differences between the primers/resin cements are marked with different small letters within sound and demineralized enamel separately for groups with and without caries infiltrant preconditioning.
