Marginal gap formation of light-activated base/liner materials; effect of setting shrinkage and bond strength

摘要

Objectives: The purpose of this study was to compare the effect of setting shrinkage and the shear bond strength on the marginal gap formation in dentin cavities of commercially available light-activated base/liner materials during the early stage of setting, with those of chemical-cured base/liner materials. Methods: the maximum marginal gap width and the opposing width in the dentin cavity was measured 30 min after the start of mixing.