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Method for improving bonding strength of titanium alloy ceramic prosthesis

A combination of strength and prosthesis technology, applied in the field of disciplines, to achieve excellent wear resistance, tight integration, and good biocompatibility

Inactive Publication Date: 2009-06-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the bonding strength of titanium alloy porcelain restorations, so as to effectively solve the problem of the bonding strength of existing titanium alloy porcelain restorations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A layer of Zr coating is sputtered on the surface of the Ti alloy metal crown in a high-vacuum magnetron coating machine. The thickness of the sputtered Zr coating is 6um. According to the sintering procedure of the conventional metal-ceramic restoration, the cemented porcelain and the opaque porcelain are sintered in sequence. Dentin porcelain, complete the production of Ti alloy porcelain restorations. After preparing a layer of Zr coating by magnetron sputtering on the surface of Ti alloy, the three-point bending strength of Ti / Zr / porcelain interface: 23-25Mpa;

Embodiment 2

[0022] A layer of Zr coating is sputtered on the surface of the Ti alloy metal crown in a high-vacuum magnetron coating machine. The thickness of the sputtered Zr coating is 12um. According to the sintering procedure of the conventional metal-ceramic restoration, the cemented porcelain and the opaque porcelain are sintered sequentially. Dentin porcelain, complete the production of Ti alloy porcelain restorations. After preparing a layer of Zr coating by magnetron sputtering on the surface of Ti alloy, the three-point bending strength of Ti / Zr / porcelain interface: 28-30Mpa;

Embodiment 3

[0024] A layer of Zr coating is sputtered on the surface of the Ti alloy metal crown in a high-vacuum magnetron coating machine. The thickness of the sputtered Zr coating is 20um. According to the sintering procedure of conventional metal-ceramic restorations, the cemented porcelain and the opaque porcelain are sintered in sequence. Dental wood porcelain, complete the production of Ti alloy porcelain restorations. After preparing a layer of Zr coating by magnetron sputtering on the surface of Ti alloy, the three-point bending strength of Ti / Zr / porcelain interface: 25-28Mpa;

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Abstract

The invention relates to a method for improving bonding strength of titanium alloy ceramic prosthesis, so as to effectively solve the problem of the bonding strength of the titanium alloy ceramic prosthesis. The process flows are that: (1) pure Ti or Ti-Zr alloy crown is casted, and the surface of the crown is treated by Al2O3 sand blasting with 80-120mum of granularities, and then is cleaned by acetone for 15min; (2) facing-target magnetron sputtering is carried out in ultra-high vacuum, the background pressure of a vacuum chamber before sputtering the coating is less than 1.4*10<-4>Pa. the discharging gases when sputtering are respectively 99.999 percent of Ar and 99.999 percent of N2, the working air pressure when sputtering the coating is 0.8 Pa, the power of sputtering power supply is 200W, and the diameter of the target is 60mm of 99.9 percent of Zr sheets. (3) after 6-20um Zr or ZrN of coating is sputtered on the surface of the pure Ti or Ti-Zr alloy crown, sintering procedures are carried out according to common metal ceramic prosthesis, and then ceramic sintering and bonding are sequentially carried out.

Description

technical field [0001] The invention belongs to oral material processing technology, and relates to materials, welding, metallurgy, casting, machinery, oral prosthetics and other disciplines. Background technique [0002] Loss and defect of tooth body or dentition are common and frequently-occurring diseases of human beings. Tooth or dentition loss and defect not only seriously affect chewing, pronunciation, development, pulp, periodontal tissue and general health, but also affect appearance. Porcelain fused to metal restorations (commonly known as porcelain teeth) are made by applying dental ceramic materials (multivariate porcelain powders into porcelain paste) on the surface of metal or alloy substrates and sintering them under vacuum conditions. Because metal-ceramic restorations have both the strength and toughness of metal, impact resistance and the wear resistance and corrosion resistance of ceramics, as well as realistic appearance, stable color and smooth surface, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/14C23C14/06C23C14/35C23C14/54
Inventor 孙大千邱小明朱松段珍珍刘杰殷世强
Owner JILIN UNIV
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