Antimicrobial cobalt-base material for dental corona products and heat treatment method thereof
An antibacterial cobalt and base material technology, applied in dentistry, dental preparations, dental prostheses, etc., can solve the problem that the special requirements of dental crown materials cannot be guaranteed in the oral environment.
Inactive Publication Date: 2015-08-12
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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However, cobalt-based alloys for oral crowns generally have strict restrictions on toxic elements such as Ni. The above-mentioned patent applications cannot guarantee the special requirements for oral environment crown materials. Therefore, it is necessary to propose corresponding regulations for the specific product form of oral environment crowns. protection requirements
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[0011] According to the chemical composition range set by the antibacterial cobalt-based alloy material for dental crown products of the present invention, the present invention adopts 15 kilograms of vacuum induction furnaces to smelt 10 kilograms of cobalt-based alloys in each of Example and Comparative Example, and its chemical composition is shown in Table 1.
[0012] Antibacterial cobalt-based alloy chemical composition (wt.%) of table 1 embodiment and comparative example
[0013]
[0014] The preparation steps are:
[0015] Step 1, by vacuum induction smelting, the antibacterial metal copper in the embodiment and the comparative example is added to the cobalt-based alloy, so that it is fully homogenized;
[0016] Step 2, heat preservation at 1200°C for 2 hours, and forge into a Φ30mm rod;
[0017] Step 3, antibacterial heat treatment, solid solution + aging treatment, wherein the solution treatment is 1220 ° C for 2 hours, and water cooled to room temperature; the ag...
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Abstract
The invention aims to provide an antimicrobial cobalt-base alloy for oral dental coronae and a heat treatment method thereof. The cobalt-base alloy comprises the following chemical components in percentage by weight: 28.0-30.0% of Cr, 8.0-10.0% of W, 1.0-2.0% of Si, 2.0-4.0% of Cu, at most 0.1% of Ni, at most 0.02% of Cd, at most 0.02% of Be, at most 1.0% of Mn, at most 1.0% of N, at most 1.0% of Nb, at most 1.0% of Fe and the balance of Co. The cobalt-base alloy has the unique oral bacterial infection resistance function. The ion precipitation and cytotoxicity experiments prove that the cobalt-base alloy has no toxic or side effect, can obviously lower the bacterial infection risk caused by use of the existing cobalt-base alloy medical appliances for oral dental coronae, and can be widely used in various Class 2 cobalt-base alloy medical appliances in the field of clinical stomatology.
Description
technical field [0001] The invention relates to the technical field of cobalt-based alloy materials, in particular to an antibacterial cobalt-based dental crown product material and a heat treatment method thereof. It has a unique anti-oral bacterial infection function, and can be widely used in various second-class medical devices related to the field of oral cavity. Background technique [0002] According to medical statistics, the number of bacteria in every milliliter of unstimulated saliva reaches 150 million, and the number of bacteria in every gram of dental calculus (tartar) reaches 10 billion. In this way, if an adult does not ask a doctor to clean his teeth for a year, there will be as many as 10 billion to 100 billion bacteria in his oral cavity. More than 30 types of bacteria have been analyzed, mainly Staphylococcus, Streptococcus, Lactobacillus, Streptococcus sialobacter, Streptococcus anaerobic, Neisseria, Actinomyces Israel, Spirochetes, Haemophilus , Bacte...
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IPC IPC(8): C22C19/07A61K6/04C22F1/10
Inventor 杨春光杨柯任玲张书源赵金龙孙子晴武学强
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI