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Antibacterial cobalt-chromium alloy porcelain false tooth

A technology of cobalt-chromium alloy and chromium alloy, which is applied in the field of antibacterial cobalt-chromium alloy porcelain-fused-to-metal dentures. It can solve the problems that the mechanical properties cannot be fully achieved, the bonding force needs to be further improved, and the alloy materials do not have antibacterial properties. Good surface condition, less porosity and defects

Active Publication Date: 2015-05-20
珠海新茂义齿科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been proved by practice that the prepared material cannot fully achieve the mechanical properties claimed in the specification, and the bonding force with porcelain still needs to be further improved. As far as materials are concerned, having good antimicrobial properties is crucial

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An antibacterial cobalt-chromium alloy porcelain denture, the denture is composed of cobalt-chromium alloy as a base material and a ceramic layer on its surface, and the composition of the cobalt-chromium alloy is composed of the following components in weight percentage: Cr27.5 , Mo 11.5, W 3, Mn 3.5, Nb 1.5, Si 2, Ag 0.8, Cu 2.5, Ce 0.5, the balance is Co; the tensile strength of this cobalt-chromium alloy is higher than 960MPa, the yield strength is higher than 730MPa, Vickers The hardness is higher than 550HV, and the cobalt-chromium base alloy of the denture is cast by the lost foam process.

Embodiment 2

[0023] An antibacterial cobalt-chromium alloy porcelain denture, the denture is composed of cobalt-chromium alloy as a base material and a ceramic layer on its surface, and the composition of the cobalt-chromium alloy is composed of the following components in weight percentage: Cr28.5 , Mo 9.5, W 5, Mn 2.5, Nb 2.5, Si 1, Ag 1.2, Cu 1.5, Ce 0.7, the balance is Co; the tensile strength of this cobalt-chromium alloy is higher than 960MPa, the yield strength is higher than 730MPa, Vickers The hardness is higher than 550HV, and the cobalt-chromium base alloy of the denture is cast by the lost foam process.

Embodiment 3

[0025] An antibacterial cobalt-chromium alloy porcelain denture, the denture is composed of cobalt-chromium alloy as a base material and a porcelain layer on its surface, and the composition of the cobalt-chromium alloy is composed of the following components in weight percentage: Cr28.0 , Mo 10.5, W 4, Mn 3.0, Nb 2.0, Si 1.5, Ag 1.0, Cu 2.0, Ce 0.6, the balance is Co; the tensile strength of this cobalt-chromium alloy is higher than 960MPa, the yield strength is higher than 730MPa, Vickers The hardness is higher than 550HV, and the cobalt-chromium base alloy of the denture is cast by the lost foam process.

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Abstract

The invention discloses an antibacterial cobalt-chromium alloy porcelain false tooth. The false tooth comprises a cobalt-chromium alloy serving as a base material, and a porcelain layer on the surface of the cobalt-chromium alloy; the cobalt-chromium alloy is composed of the following components in parts by weight: 27.5 to 28.5 parts of Cr, 9.5 to 11.5 parts of Mo, 3 to 5 parts of W, 2.5 to 3.5 parts of Mn, 1.5 to 2.5 parts of Nb, 1 to 2 parts of Si, 0.8 to 1.2 parts of Ag, 1.5 to 2.5 parts of Cu, 0.5 to 0.7 parts of Ce, and the balance of Co; the cobalt-chromium alloy has the tensile strength of more than about 960MPa, the yield strength of more than about 730MPa, and the vickers hardness of more than about 550HV. The cobalt-chromium based alloy of the false tooth is casted and formed by the evanescent mode process; and the prepared false tooth is excellent in performance and good in antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to an antibacterial cobalt-chromium alloy porcelain denture. Background technique [0002] Cobalt-chromium-molybdenum alloy has been used in the medical field for a long time. It was first used as artificial prosthetic joint in transplantation medicine. Due to its good biocompatibility, it is still used today. [0003] Cobalt-chromium-molybdenum bioalloy is mainly developed for the toxicity of nickel and beryllium. Its cobalt content is higher than that of nickel-based alloys. Because of its high cobalt content, its corrosion resistance is better, and its bonding strength exceeds 25MPa. , relatively safe and reliable. [0004] In recent years, due to its successful application in artificial prosthetic joints, cobalt-chromium-molybdenum alloy has gradually been used as a denture material in the field of oral restoration. This type of denture is more comfortable to wear and wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/09A61K6/04
Inventor 胡竞之
Owner 珠海新茂义齿科技有限公司
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