title: Experimental silver amalgams with added copper: a two-year clinical evaluation.
mesh_terms: D003300:Copper; D003722:Dental Alloys; D003723:Dental Amalgam; D003793:Dental Restoration, Permanent; D005069:Evaluation Studies as Topic; D006801:Humans; D055585:Physical Phenomena; D010825:Physics; D012834:Silver; D013718:Tensile Strength
chemical_list: D003722:Dental Alloys; D012834:Silver; D003300:Copper; D003723:Dental Amalgam