Effects of coating materials on nanoindentation hardness of enamel and adjacent areas. Dent Mater. 2016 Apr 7; Authors: Alsayed EZ, Hariri I, Nakashima S, Shimada Y, Bakhsh TA, Tagami J, Sadr A Abstract OBJECTIVES: Materials that can be applied as thin coatings and actively release fluoride or other bioavailable ions for reinforcing dental hard tissue …