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3D printing based method for preparing antibacterial cobalt based dental crown

A 3D printing and antibacterial cobalt technology, which is applied in the field of preparation of antibacterial cobalt-based crown products, can solve the problems of excessive heavy metal release and substandard mechanical properties, and achieve the effect of improving compactness, high strength and reducing the formation of pores

Active Publication Date: 2016-08-10
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the final analysis, 3D printing technology is a preparation method of powder metallurgy. If the preparation control is not proper, the processed products still have biological safety problems such as substandard mechanical properties (GB 17168-2013), excessive heavy metal release and cytotoxicity.

Method used

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  • 3D printing based method for preparing antibacterial cobalt based dental crown
  • 3D printing based method for preparing antibacterial cobalt based dental crown
  • 3D printing based method for preparing antibacterial cobalt based dental crown

Examples

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Embodiment Construction

[0020] According to the chemical composition range set by the antibacterial cobalt-based alloy material for crown products of the present invention, 15 kilograms of vacuum induction furnaces are used to smelt 10 kilograms of cobalt-based alloys in each of Example 1-3 and Comparative Example 1-3. The chemical composition is shown in the table. 1.

[0021] Table 1 The chemical composition of the antibacterial cobalt-based alloys of the examples and comparative examples (wt.%)

[0022]

[0023] The preparation steps are:

[0024] Step 1, by vacuum induction melting, the antibacterial metal copper in the embodiment and the comparative example is added to the cobalt-based alloy, so that it is fully homogenized, and the antibacterial cobalt-based alloy is obtained;

[0025] Step 2, using an inert gas atomization to obtain a spherical cobalt-based alloy powder, and sieving to prepare an antibacterial cobalt-based alloy powder with an average particle size of 30 microns;

[0026]...

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Abstract

The invention provides a method for preparing antibacterial cobalt based alloy for a dental crown. The method comprises the following steps: 1), by a vacuum induction melting, adding an antibacterial metal copper into a cobalt based alloy to prepare the antibacterial cobalt based alloy; 2), using inert gas atomization to obtain a spherical antibacterial cobalt based alloy powder and sieving to prepare the antibacterial cobalt based alloy powder with average particle size of in 10-30 micron; 3), preparing a three-dimensional structure model of the cobalt based alloy dental crown product by using 3D printing equipment for printing; 4), sintering at high temperature of 1400 DEG to 1500 DEG C, and insulating for 4-5 hours; and 5), carrying out antibacterial heat treatment to obtain the antibacterial cobalt based dental crown products. The cobalt based alloy can significantly reduce the risk of bacterial infection of the existing cobalt based alloy for oral crown used in medical devices.

Description

technical field [0001] The present invention relates to dental crown products, and specifically provides a method for preparing an antibacterial cobalt-based dental crown product based on 3D printing technology. The obtained dental crown product has a unique anti-oral bacterial infection function and can be widely used in various oral cavity related products. Class II medical devices. 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, Hae...

Claims

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Application Information

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IPC IPC(8): C22C19/07B22F9/08B22F3/105C22F1/10B33Y10/00B33Y80/00
CPCC22C19/07C22F1/10B22F9/082B33Y10/00B33Y80/00B22F10/00B22F10/34B22F10/64B22F10/28Y02P10/25
Inventor 赵金龙杨春光任玲张书源孙子晴杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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