title: Early observations and three-year clinical evaluation of four amalgam alloys.
authors.forename: J B
authors.initials: JB
authors.lastname: Ricker
authors.forename: E H
authors.initials: EH
authors.lastname: Greener
mesh_terms: D003722:Dental Alloys; D003723:Dental Amalgam; D003793:Dental Restoration, Permanent; D006801:Humans
chemical_list: D003722:Dental Alloys; D003723:Dental Amalgam