NI-CR DENTAL ALLOYS WITH COMBINED PROPERTIES OF A LOW MELTING POINT AND HIGH STRENGTH AND ELONGATION

摘要

The present invention relates to a low-melting point nickel-chrome based dental alloy having excellent strength and ductility. More particularly, the present invention relates to a dental alloy, which is prepared by adding an appropriate amount of molybdenum (Mo), aluminum (Al), niobium (Nb), tantalum (Ta), or the like to enhance the yield strength, adding an appropriate amount of boron (B), iron (Fe), niobium (Nb), tantalum (Ta), or the like to improve the elongation, and adding an appropriate amount of boron (B), silicon (Si), niobium (Nb), or the like to lowe the melting point. The alloy of the present invention is harmless to the human body, satisfies the yield strength or elongation, and lowers the melting point, thereby remarkably improving the castability in the dental or molding process in the dental laboratory and thus easily manufacturing dentures. Further, the alloy of the present invention enhances the binding strength with the proclaim material, thereby enhancing the masticatory strength and improving dental esthetics while using teeth for a long time.