High noble dental alloy

Abstract

A silver free high noble dental alloy comprising at least 60 wt. % noble materials, where 40 wt. % of the material is gold; at least 2.5 wt. % gallium, at least about from 2 to 4 wt. % cobalt; and at least from about 0.01 to 0.25 wt. % lithium and/or boron; and a principal balance of palladium is provided. Dental products and methods of manufacturing dental products using such a high noble dental alloys are also provided.

1 . A high noble dental alloy comprising:
   Pd 1-a (AU b CO c X d (GaY) e Z f ) a      where X is at least one material selected from the group consisting of lithium and boron;   where Y is at least one material selected from the group consisting of germanium, tin, indium, zinc and manganese;   where Z is at least one material selected from the group consisting of ruthenium, rhenium and iridium;   where a is the sum of b, c, d, e and f; and   where b is from 40 to 44 wt. %, c is from about 2 to 4 wt. %, d is from about 0.01 to 0.25 wt. %, e is from about 2.5 to 6 wt. % where gallium must comprise at least 2.5 wt. % of the total alloy composition, and f is from about 0 to 1 wt. %.   
     
     
         2 . The high noble dental alloy of  claim 1 , where b is 40 wt. %. 
     
     
         3 . The high noble dental alloy of  claim 1 , where c is about 3 wt. %. 
     
     
         4 . The high noble dental alloy of  claim 1 , where d is about 0.1 wt. %. 
     
     
         5 . The high noble dental alloy of  claim 4 , where X is lithium. 
     
     
         6 . The high noble dental alloy of  claim 1 , where e is about 6 wt. 
     
     
         7 . The high noble dental alloy of  claim 6 , where Y is a mixture of gallium and tin. 
     
     
         8 . The high noble dental alloy of  claim 7 , where gallium comprises 3 wt. % of the alloy. 
     
     
         9 . The high noble dental alloy of  claim 1 , where f is about 0.2 wt. %. 
     
     
         10 . The high noble dental alloy of  claim 9 , where Z is a mixture of ruthenium and rhenium. 
     
     
         11 . The high noble dental alloy of  claim 10 , where ruthenium and rhenium each comprise 0.1 wt. % of the alloy. 
     
     
         12 . The high noble dental alloy of  claim 1 , wherein the alloy further comprises less than 5 wt. % of at least one trace additive selected from the group consisting of copper, nickel and iron. 
     
     
         13 . The high noble dental alloy of  claim 1 , wherein the alloy comprises 50.7 wt. % palladium, 40 wt. % gold, 3 wt. % cobalt, 3 wt. % gallium, 3 wt. % tin, 0.1 wt. % lithium, 0.1 wt. % rhenium and 0.1 wt. % ruthenium. 
     
     
         14 . A dental product comprising:
 a substrate for dental application, said substrate being formed of a high noble dental alloy comprising:
   Pd 1-a (AU b CO c X d (GaY) e Z f ) a    
   where X is at least one material selected from the group consisting of lithium and boron;   where Y is at least one material selected from the group consisting of germanium, tin, indium, zinc and manganese;   where Z is at least one material selected from the group consisting of ruthenium, rhenium and iridium;   where a is the sum of b, c, d, e and f; and   where b is from 40 to 44 wt. %, c is from about 2 wt. % to 4 wt. %, d is from about 0.01 to 0.25 wt. %, e is from about 2.5 to 6 wt. % where gallium must comprise at least 2.5 wt. % of the total alloy composition, and f is from about 0 to 1 wt. %.   
     
     
         15 . The dental product of  claim 14 , where b is 40 wt. %. 
     
     
         16 . The dental product of  claim 14 , where c is about 3 wt. %. 
     
     
         17 . The dental product of  claim 14 , where d is about 0.1 wt. %. 
     
     
         18 . The dental product of  claim 17 , where X is lithium. 
     
     
         19 . The dental product of  claim 14 , where e is about 6 wt. 
     
     
         20 . The dental product of  claim 19 , where Y is a mixture of gallium and tin. 
     
     
         21 . The dental product of  claim 20 , where gallium comprises 3 wt. % of the alloy. 
     
     
         22 . The dental product of  claim 14 , where f is about 0.2 wt. %. 
     
     
         23 . The dental product of  claim 22 , where Z is a mixture of ruthenium and rhenium. 
     
     
         24 . The dental product of  claim 23 , where ruthenium and rhenium each comprise 0.1 wt. % of the alloy. 
     
     
         25 . The dental product of  claim 14 , wherein the alloy further comprises less than 5 wt. % of at least one trace additive selected from the group consisting of copper, nickel and iron. 
     
     
         26 . The dental product of  claim 14 , wherein the alloy composition comprises 50.7 wt. % palladium, 40 wt. % gold, 3 wt. % cobalt, 3 wt. % gallium, 3 wt. % tin, 0.1 wt. % lithium, 0.1 wt. % rhenium and 0.1 wt. % ruthenium. 
     
     
         27 . A method of forming a dental product comprising the steps of:
 providing a high noble dental alloy comprising:
   Pd 1-a (AU b CO c X d (GaY) e Z f ) a    
   where X is at least one material selected from the group consisting of lithium and boron,   where Y is at least one material selected from the group consisting of germanium, tin, indium, zinc and manganese,   where Z is at least one material selected from the group consisting of ruthenium, rhenium and iridium,   where a is the sum of b, c, d, e and f, and   where b is from 40 to 44 wt. %, c is from about 2 wt. % to 4 wt. %, d is from about 0.01 to 0.25 wt. %, e is from about 2.5 to 6 wt. % where gallium must comprise at least 2.5 wt. % of the total alloy composition, and f is from about 0 to 1 wt. %; and   shaping the dental alloy to form a dental product.   
     
     
         28 . The method of  claim 27 , wherein the step of shaping comprises converting the alloy into a powder. 
     
     
         29 . The method of  claim 28 , wherein the step of shaping is selected from the group consisting of casting, molding, milling and laser sintering.