Mechanical properties and molecular structure analysis of subsurface dentin after Er:YAG laser irradiation. J Mech Behav Biomed Mater. 2017 Jun 03;74:274-282 Authors: He Z, Chen L, Hu X, Shimada Y, Otsuki M, Tagami J, Ruan S Abstract The purpose of this study was to evaluate the chemical and mechanical modifications in subsurface dentin layer after …