Abstract: The present invention provides a stainless dental alloy which may be used in producing crowns, bridges, inlays, and the like. It also provides an alloy which is especially adapted for the application of low-fusing opaqueing porcelain for adhesion to such dental appliances. The alloy of the present invention has a melting point approximating 2650.degree. F. In its broadest aspect the alloy consists of cobalt 40 to 60%, chromium 18 to 35%, tungsten 5 to 20%, molybdenum 1 to 4%, copper 0.5 to 2%, iron 1 to 3%, manganese 0.5 to 2%, niobium 0.5 to 2%, and silicon 0.25 to 1%.

Abstract: The present invention provides an essentially non-precious stainless dental alloy which may be used in producing crowns, bridges, inlays, and the like. It also provides an alloy which is especially adapted for the application of low fusing opaqueing porcelain for adhesion to such dental appliances. The alloy of the present invention has a melting point approximating 2650.degree. F. In its broadest aspect the alloy consists of cobalt 40 to 60%, chromium 25 tp 32%, tungsten 7 to 15%, ruthenium 1 to 5%, gallium 1 to 5%, niobium 0.5 to 2%, copper 0.5 to 2%, tantalum 0.5 to 1%, silicon 0.5 to 1%, iron 0.5 to 1%. While ruthenium is of the platinum group of elements, it is included in such a small amount as to make the alloy essentially of non-precious stainless metals.

Abstract: The present invention provides a semi-precious alloy especially adapted for use as an implant in orthopedic work and for use in dental work wherein it is important to have a corrosion-resistant alloy which has a very high tolerance for acceptance by the human body. In the preferred form of the invention the semi-precious alloy consists of the following elements, in parts by weight: cobalt 52%, chromium 22%, tungsten 10%, ruthenium 10%, molybdenum 2%, manganese 0.5%, niobium 0.5%, boron 0.17%, iron 1%, and copper 1%.

Abstract: The present invention provides a non-precious stainless dental alloy which may be used in producing crowns, bridges, inlays, and the like. It also provides an alloy which is especially adapted for the application of low fusing opaqueing porcelain for adhesion to such dental appliances. The alloy of the present invention has a melting point approximating 2550.degree. F. In its broadest aspect the alloy consists of cobalt 49 to 59%, chromium 25 to 30%, tungsten 7 to 14%, gallium 2 to 6%, copper 1 to 3%, niobium 0.5 to 2%, silicon 0.5 to 2%, and iron 0.5 to 6%.

Abstract: The present invention provides dental alloys which may be used in producing inlays, crowns and the like. It also provides alloys which are especially adapted for the application of low fusing porcelain for facings to improve the aesthetic appearance of the denture. The alloy of the present invention has a melting point around 2400.degree. F. In its broadest aspect the alloy consists of gallium 7 to 12%, gold 2 to 5%, boron 0.125 to 0.50% and the balance palladium.

Abstract: The present invention provides a precious metal alloy consisting essentially of palladium and up to 25% tin, up to 2% iron, up to 1% aluminium, and up to 11/2% boron. In its preferred form the tin content is approximately 15%, the iron content is approximately 0.83%, the aluminum content is approximately 0.5%, and the boron content is approximately 0.17%. The alloy has a melting point of approximately 2650.degree. F. It is especially adapted for low-fusing porcelain application, and well suited for dental use. It is an economy precious metal alloy as it contains no gold and no platinum. Between 1% and 5% of ruthenium may be added as a hardening element. 3% of ruthenium has been found to be ideal.

Abstract: The present invention provides a precious metal alloy consisting essentially of palladium, from 1-3% of boron, and up to 3% of molybdenum. In its preferred form the boron content is approximately 1.3%, the molybdenum content is approximately 2%, and the alloy has a melting point of approximately 2600.degree. F. To reduce the melting point of this alloy to approximately 2500.degree. F. for low-fusing porcelain application, nickel or gallium is added in an amount of slightly less than 5%.

Abstract: The present invention provides a lining material for a polymerized methylmethacrylate denture restoration which consists essentially of an admixture of approximately 40% of methylmethacrylate polymer, approximately 10% of methylmethacrylate monomer, and approximately 50% of butyl phthalyl butyl glycolate. The denture liner material is semi-cured for approximately 5 minutes at a temperature of about 160.degree.F. into a soft, tacky material having no inherent rigidity and which can be manually shaped to conform to an irregular object. The denture liner material can also be semi-cured for approximately 15 minutes at a temperature of 160.degree.F. into a somewhat hard material which is capable of being softened by application of heat and pressure. Both the soft semi-cured liner material and the somewhat hard semi-cured liner material are capable of being finally cured with a polymerized methylmethacrylate denture and adhered thereto to provide a soft liner therefor.