Dental material for attaching a cast metal structure to a metal coping in the preparation or repair of a dental restoration

Abstract

A dental material composition for attaching a metal structure to a dental coping in the preparation or repair of a dental restoration which includes a component of high-fusing temperature metal particles in a range of between 1-10 weight percent, a component of low fusing temperature metal particles having a melting temperature below the melting temperature of the high-fusing particles in excess of at least 90 weight percent and preferably above about 95 weight percent of the total composition with the low fusing temperature metal particles composed primarily of gold, a small measure of borate fluxes in a range of between 0.1 to 2.0% by weight of the total composition and a volatile binder.

1 . A dental material composition for attaching a metal structure to a dental coping in the preparation or repair of a dental restoration comprising a component of high-fusing temperature metal particles in a range of between 1-10 weight percent, a component of low fusing temperature metal particles having a melting temperature below the melting temperature of the high-fusing particles with the low fusing temperature metal particles present above at least about 90 weight percent of the total composition and being composed primarily of gold, a small measure of borate fluxes in a range of between 0.1to 2.0% by weight of the total composition and a volatile binder.  
   
   
       2 . A dental material composition as defined in  claim 1  wherein the low fusing temperature metal particles is present above at least 95wt % of the total composition.  
   
   
       3 . A dental material composition as defined in  claim 2  wherein the high fusing temperature metal particles are preferably non-spherical in shape .  
   
   
       4 . A dental material composition as defined in  claim 3  wherein the high fusing temperature metal particles are less than 30 microns in size.  
   
   
       5 . A dental material composition as defined in  claim 4  wherein the high fusing temperature metal particles are in a range of between 3-6 weight percent.  
   
   
       6 . A dental material composition as defined in  claim 5  wherein the high fusing temperature metal particles are composed of at least 30% of metals selected from the platinum group of elements.  
   
   
       7 . A dental material composition as defined in  claim 6  wherein the low fusing temperature metal particles are preferably spherical in shape.  
   
   
       8 . A dental material composition as defined in  claim 7  wherein the low fusing temperature metal particles are composed of at least 97% gold.  
   
   
       9 . A dental material composition as defined in  claim 8  wherein said volatile binder is a liquid of water and an organic compound.