Evaluation of microtensile bond strength of two luting cements by type and regional variations in dental substrate
To compare the microtensile bond strength of two adhesive luting cements depending on the type and regional variation in dental substrate. The 36 human molars used were divided into 6 groups: G1 occlusal dentin using Rely-X Unicem cement (3M ESPE), G2 occlusal dentin using Rely-X CRA (3M ESPE); G3 buccal dentin using Rely-X Unicem; G4 buccal dentin using Rely-X CRA; G5 enamel using Rely-X Unicem and G6 enamel using Rely-X CRA. Rectangular shaped cylinders measuring 4.0 x 4.0 x 6.0 mm, simulating indirect restorations that were cemented in all samples.