Homogenous bonding of dispersed phase alloy

Claim 1

In a process for making a dental alloy mixture which will amalgamate to form a restoration with superior compressive strength and low creep properties by mechanically mixing lathe cut dental amalgam alloy particles and silver-copper alloy spheres, the improvement comprising treating a mechanical mixture of lathe cut dental amalgam alloy particles of minus 200 mesh, having the composition: silver 40--75%, tin 20--30%; copper 2--30%, and from 0 to 30% of one or more metals selected from the group consisting of indium, zinc, gold, mercury, manganese, cadmium and aluminum, and spheroidal silver-copper alloy of minus 325 mesh, having the composition: silver 54--72%; copper 24--40%, and varying amounts of one or more metals selected from the group consisting of nickel, zinc, tin or indium, the said mixture of alloys containing from about 20 to 50% by weight of the silver-copper alloy, with an effective amount of a treating solution selected from the group consisting of 5 volume % to 100 volume % hydrochloric acid, 5 volume % to 50 volume % sulfuric acid, 5 volume % to 20 volume % nitric acid and 5 volume % to 100 volume % methyl alcohol to aglommerate the mixture of alloy particles, separating the aglommerated mixture of alloy particles from the treating solution, washing the agglommerated alloy particles with water to remove the treating solution when the treating solution is one of the mineral acids, and finally drying the aglommerated mixture of alloy particles.