DENTAL ALLOY FOR CAD/CAM MACHINING

摘要

The present invention provides a dental alloy containing palladium (Pd) and indium (In) for CAD/CAM machining. Specifically, the invention comprises palladium (Pd) and indium (In) as basic components and can further include one component selected from the group consisting of gold (Au), silver (Ag), nickel (Ni), cobalt (Co), and platinum (Pt). In addition, the invention provides a dental alloy which comprises palladium (Pd), indium (In), and gold (Au) as basic components and can further include one component selected from the group consisting of silver (Ag), nickel (Ni), cobalt (Co), and platinum (Pt). The dental alloy according to the invention has a yield strength of 250~450MPa, breaking elongation of 2~8%, metal-ceramic adhesion of 20~70MPa, coefficient of linear thermal expansion of 14.0× 10-6/K~17.0× 10-6/K, or density of 8~15g/?. The dental alloy according to the invention can maintain the same mechanical properties of conventional alloys while enhancing price competitiveness by reducing the gold content when compared with conventional casting alloys. In addition, the dental alloy can be prepared using a simple production process while making up for the weaknesses of conventional casting methods.