Cast titanium alloy for oral restoration

Abstract

The invention provides a cast titanium alloy for oral restoration, which consists of the following components in percentage by weight: 1 to 15 percent of indium and the balance of titanium. The cast titanium alloy is prepared by the following steps of: smelting the titanium and the indium into an alloy ingot by using a vacuum arc furnace; carrying out solid dissolving treatment on the obtained alloy ingot at 850 DEG C for one hour and quenching; and carrying out hot rolling on the quenched alloy ingot so as to make the thickness of the alloy ingot be 1 to 2mm, and obtaining the cast titanium alloy. The cast titanium alloy has the advantages that: the components of the alloy have good biocompatibility, and cannot release toxic ions when used in an oral cavity; the cast titanium alloy is based on the titanium and inherits the excellent corrosion resistance of the titanium, so the cast titanium alloy has good corrosion resistance; the mechanical strength of the cast titanium alloy is higher than that of the pure medical titanium, so the cast titanium alloy is suitable for producing prosthesis with smaller sectional dimension, such as snap ring, support, crown and bridge, removable partial denture, and the like, and can improve the use experiences of the patients; and because the microhardness is greatly improved, the abrasive resistance of the alloy is improved, so when used as a metal dental crown, the cast titanium alloy can effectively resist the function failure caused by wear.

Description

technical field [0001] The invention relates to an oral medical material, in particular to an alloy for dental restoration. Background technique [0002] Metals for dental restoration mainly include two categories: precious metal alloys and non-precious metal alloys. Precious metals, including gold, silver, and platinum, have been gradually replaced by non-precious metals with comparable performance but cheaper prices due to their high prices. At present, non-precious metals include cobalt-chromium alloy, nickel-chromium alloy, stainless steel and titanium alloy. Cobalt-chromium alloys and nickel-chromium alloys usually contain metal elements that are harmful to the human body, such as cobalt and nickel, and are also attracting increasing attention. The commonly used grade of stainless steel for oral restoration is 18 / 8 type austenitic stainless steel. Due to its low tensile strength, the snap ring of the restoration is easy to loosen and deform, resulting in functional fa...

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Problems solved by technology

However, none of these reports involved alloys composed of titanium (Ti) and indium (In)

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