title: Surface tarnishing in vitro of some commercially produced high-copper silver amalgams.
authors.forename: N J
authors.initials: NJ
authors.lastname: Ray
mesh_terms: D003116:Color; D003300:Copper; D003343:Corrosion; D003722:Dental Alloys; D003723:Dental Amalgam; D008422:Materials Testing; D012834:Silver
chemical_list: D003722:Dental Alloys; D012834:Silver; D003300:Copper; D003723:Dental Amalgam