Preparation method of antibacterial cobalt chromium alloy porcelain artificial tooth

A technology of cobalt-chromium alloy and chromium alloy, which is applied in the field of preparation 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, good surface condition, less porosity and defects

Active Publication Date: 2013-04-24
GUANGZHOU NALIAN MATERIAL TECH CO LTD
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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

[0020] A preparation method of an antibacterial cobalt-chromium alloy porcelain denture, the composition of the cobalt-chromium alloy is composed of the following components in weight percentage: Cr 27.5, Mo 11.5, W 3, Mn 3.5, Nb 1.5, Si 2, Ag 0.8 , Cu 2.5, Ce 0.5, and the balance is Co; the preparation method is:

[0021] 1) Make the lost foam pattern, then paint the surface, put it into the sand box after the paint is dried, and fill it with sand tightly, prepare the pouring pattern, and place it on the pouring table with vibration device;

[0022] 2) According to the above ratio, put metal ingots, intermediate alloys and other raw materials into the induction furnace to melt. After the melt is uniform, test and adjust the composition to make it meet the above range, and then adjust the pouring temperature to make it 30°C higher than the melting point of the alloy. ready to pour;

[0023] 3) Turn on the vibration device so that the vibration frequency is 140 Hz and the ampl...

Embodiment 2

[0026] A preparation method of an antibacterial cobalt-chromium alloy porcelain denture, the composition of the cobalt-chromium alloy is composed of the following components in weight percentage: Cr 28.5, Mo 9.5, W 5, Mn 2.5, Nb 2.5, Si 1, Ag 1.2 , Cu 1.5, Ce 0.7, and the balance is Co; the preparation method is:

[0027] 1) Make the lost foam pattern, then paint the surface, put it into the sand box after the paint is dried, and fill it with sand tightly, prepare the pouring pattern, and place it on the pouring table with vibration device;

[0028] 2) According to the above ratio, put metal ingots, intermediate alloys and other raw materials into the induction furnace to melt. After the melt is uniform, test and adjust the composition to make it meet the above range, and then adjust the pouring temperature to make it 40°C higher than the melting point of the alloy. ready to pour;

[0029] 3) Turn on the vibration device so that the vibration frequency is 160 Hz and the ampli...

Embodiment 3

[0032] A preparation method of an antibacterial cobalt-chromium alloy porcelain denture, the composition of the cobalt-chromium alloy is composed of the following components in weight percentage: Cr 28, Mo 10.5, W 4, Mn 3.0, Nb 2.0, Si 1.5, Ag 1.0 , Cu 2.0, Ce 0.6, and the balance is Co; the preparation method is:

[0033] 1) Make the lost foam pattern, then paint the surface, put it into the sand box after the paint is dried, and fill it with sand tightly, prepare the pouring pattern, and place it on the pouring table with vibration device;

[0034] 2) According to the above ratio, put metal ingots, intermediate alloys and other raw materials into the induction furnace to melt. After the melt is uniform, test and adjust the composition to make it meet the above range, and then adjust the pouring temperature to make it 35°C higher than the melting point of the alloy. ready to pour;

[0035] 3) Turn on the vibration device so that the vibration frequency is 150 Hz and the ampl...

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Abstract

The invention discloses a preparation method of an antibacterial cobalt chromium alloy porcelain artificial tooth. Cobalt chromium alloy consists of Cr, Mo, W, Mn, Nb, Si, Ag, Cu, Ce and Co. The preparation method comprises the following steps: (1) manufacturing a lost foam pattern, then coating a coating on the surface, putting into a sand box after the coating is dried, filling sand and compacting, and putting into a pouring table with a vibration device; (2) putting ingot metal, intermediate alloy and other raw materials into an induction furnace for melting according to the mixture ratio, testing and adjusting ingredients after solution is uniform, then adjusting the pouring temperature, ensuring that the pouring temperature is about 30-40 DEG C higher than that of an alloy melting point and preparing to pour; (3) starting the vibration device, so that the vibration frequency is about 140-160 Hz, and the amplitude of vibration is about 4-6 mm and then pouring the solution in the step (2); and (4) sand-blasting, ultrasonic cleaning and conventional porcelain-baking after cooling and cleaning. The prepared artificial tooth has the advantages of excellent performance and good antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a method for preparing an antibacterial cobalt-chromium alloy porcelain-fused-to-metal 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 dentu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/07C22C30/02B22C9/04B22D27/08A61K6/04
Inventor 胡竞之
Owner GUANGZHOU NALIAN MATERIAL TECH CO LTD
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