Biological noble metal roast ceramic alloy for oral cavity plerosis

A kind of oral restorative and bio-based technology, applied in the fields of medical science, dentistry, dental preparations, etc., can solve the problems of poor hardness and strength, increase and other problems, and achieve the effect of excellent biocompatibility

Inactive Publication Date: 2006-08-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the hardness and strength of these alloys in the as-cast state are not good, and most of them are difficult to improve through heat treatment before porcelain firing, it is necessary to develop porcelain alloys that can improve the hardness and strength of alloys through heat treatment before porcelain firing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The prepared alloy has the following components and weight percentages: 86% gold, 11% platinum, 1.5% zinc, 0.5% indium, 0.2% iron, 0.7% rhodium and 0.1% iridium.

[0015] It is smelted by non-consumable electric arc to form a uniform block alloy, and processed into thin slices. After resistance heating or induction heating, remelting, and casting into various oral restorative finished products or mechanical performance test samples. The performance data of the alloy are: color: light yellow, density: 18.7g / cm 3 , Melting range: 1030-1130°C. In the cast state, the mechanical properties of the alloy are: Yield strength: Rp 0.2 =370±20MPa, tensile strength: Rm=500±20MPa, elongation after fracture: A≥6%, Vickers hardness: HV0.3 / 45=150±10. The mechanical property data of the alloy is: yield strength: Rp 0.2 =550±20MPa, tensile strength: Rm=610±20MPa, elongation after fracture: A≥4%, Vickers hardness: HV0.3 / 45=185±10.

Embodiment 2

[0017] The prepared alloy has the following components and weight percentages: 88% gold, 9.0% platinum, 1.0% zinc, 0.2% indium, 0.8% iron, 0.8% rhodium and 0.2% iridium.

[0018] It is melted into a uniform block alloy by vacuum melting, and processed into thin slices. After resistance heating or induction heating, remelting, and casting into various oral restorative finished products or mechanical performance test samples. The performance data of the alloy are: color: light yellow, density: 18.7g / cm 3 , Melting range: 1010-1100°C. In the cast state, the mechanical properties of the alloy are: Yield strength: Rp 0.2 =370±20MPa, tensile strength: Rm=480±20MPa, elongation after fracture: A≥7%, Vickers hardness: HV0.3 / 45=150±10. The mechanical property data of the alloy is: yield strength: Rp 0.2 =550±20MPa, tensile strength: Rm=600±20MPa, elongation after fracture: A≥5%, Vickers hardness: HV0.3 / 45=190±10.

Embodiment 3

[0020] The prepared alloy has the following components and weight percentages: 83% gold, 13% platinum, 2.0% zinc, 0.7% indium, 0.5% iron, 0.5% rhodium and 0.3% iridium.

[0021] It is melted by vacuum non-consumable arc to form a uniform block alloy, and processed into thin slices. After resistance heating or induction heating, remelting, and casting into various oral restorative finished products or mechanical performance test samples. The performance data of the alloy are: color: light yellow, density: 18.3g / cm 3 , Melting range: 1060-1160°C. In the cast state, the mechanical properties of the alloy are: Yield strength: Rp 0.2 =400±20MPa, tensile strength: Rm=520±20MPa, elongation after fracture: A≥6%, Vickers hardness: HV0.3 / 45=170±10. The mechanical property data of the alloy is: yield strength: Rp 0.2 =580±20MPa, tensile strength: Rm=620±20MPa, elongation after fracture: A≥4%, Vickers hardness: HV0.3 / 45=210±10.

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Abstract

A biologic noble metal-baked ceramic alloy for repairing tooth contains Au (80-88 Wt%), Pt (9-15), Zn (1-2.2), In (0.2-1.2), Fe (0.2-0.8), Rh (0.2-0.8) and Ir (0.1-0.6). Its advantages are high biocompatibility and anticorrosion nature, no by-effect, not decoloring, and uniform mechanical performance.

Description

technical field [0001] The invention relates to a noble metal alloy used in the field of dental porcelain restoration materials, in particular to a biological type precious metal porcelain alloy for oral restoration. Background technique [0002] In the field of dental restoration, the demand for aesthetics has made porcelain-to-metal restorations popular. This kind of porcelain restoration technology is to melt and cover several layers of ceramic powder on the cast metal base at high temperature, so as to obtain a composite body of metal inner bottom and ceramic shell layer, which is used for clinical dental restoration. This restoration combines the excellent mechanical properties of metal with the aesthetics and biocompatibility of ceramics. Since porcelain restorations are used in the oral cavity, the metal material used as the base must have excellent mechanical properties, biocompatibility, and other physical and chemical properties. The American National Standards I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/04
Inventor 王健农刘卫斌
Owner SHANGHAI JIAO TONG UNIV
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