Preparation method of dental color-masking porcelain powder

Abstract

The invention relates to a preparation method of dental color-masking porcelain powder and belongs to the technical field of dental materials. According to the method, calcium fluoride is adopted forcarrying out coating modification on titanium dioxide, a silicate melt, zinc oxide and zirconium oxide are combined with one another, and aluminum powder is used for doping; the dental color-masking porcelain powder with high combination firmness is prepared through the processes of melting, water quenching, rapid cooling and the like; the aluminum powder can be separated out on a metal surface after oxidation and generate aluminum oxide, the interface bonding strength between an alloy and a porcelain material is obviously improved, a thick transition layer can be formed with oxides in baked porcelain, and strong chemical bonding is realized. The added zinc oxide can show excellent antibacterial performance on the surface in a neutral environment without illumination, and has a good colorand high chemical stability; meanwhile, zinc is also a mineral element necessary for the human body. The thermal expansion coefficient of calcium fluoride is high, modified titanium dioxide is coatedwith the calcium fluoride, correspondingly the thermal expansion coefficient of the titanium dioxide can be increased, and the thermal matching performance between the prepared dental color-masking porcelain powder and the alloy is great.

Description

technical field [0001] The invention relates to a preparation method of dental opaque porcelain powder, which belongs to the technical field of dental materials. Background technique [0002] Porcelain teeth can be divided into movable porcelain teeth and fixed porcelain teeth according to the retention method; according to the name of the restoration, it can be divided into inlays, veneers, fixed bridges, movable bridges, post crowns, and full crowns; The material of tooth composition can be divided into metal porcelain tooth, all porcelain tooth, crystal porcelain tooth. [0003] Metal-based porcelain teeth have become a popular dental restoration method in China because of their aesthetics, biological functions and low price. However, due to the high technical content of preparing porcelain materials, the dental porcelain products currently used in China are mainly produced by foreign companies, and the products of these companies are still insufficient in terms of metal...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a preparation method of dental