title: Wear test of composite restorative materials by a polishing machine.
mesh_terms: D003188:Composite Resins; D003723:Dental Amalgam; D003743:Dental Enamel; D003775:Dental Polishing; D006244:Hardness; D006801:Humans; D008422:Materials Testing; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D003723:Dental Amalgam