Abstract
Dental composite materials for CAD/CAM fabrication were reviewed in terms of their microstructures and mechanical properties focusing on hardness and elastic modulus. CAD/CAM composite materials are classified roughly into two kinds of microstructures；one is polymer matrix with dispersed inorganic fillers, and the other is polymer-infiltrated ceramic network. The hardness and elastic modulus for the CAD/CAM composite materials differ from each structure. The mechanical properties of composite materials with the later structure is higher than those of composite materials with the former. Especially the mechanical properties of the nanocomposite with polymer-infiltrated ceramic network are comparable to those of a human-enamel. Future perspective for dental restorative materials are described from the viewpoint of developing biomimetic functional materials.
https://ror.org/03bwzch55 
