Anterior tooth facing ceramic material and preparation method thereof

Abstract

The invention relates to an anterior tooth facing ceramic material, which is prepared from the following raw material components in percentage by mass: 22.5 to 25 percent of Li2O, 3.5 to 4.8 percent of K2O, 1.5 to 2.5 percent of Al2O3, 2.5 to 4 percent of P2O5, 1 to 1.5 percent of ZrO2, 0.5 to 1 percent of BaO, 0.3 to 0.6 percent of B2O3, 0.2 to 0.4 percent of MnO2, 0.04 to 0.08 percent of Fe2O3, 0.3 to 0.5 percent of CaF2, 0.4 to 0.8 percent of Nd2O3, 0.4 to 0.6 percent of ZnO, 0.2 to 0.4 percent of CeO2, 0.1 to 0.3 percent of SrO, 0.04 to 0.06 percent of graphite powder and the balance of SiO2. The melting process is carried out in an electric melting furnace; the stirring is carried out through a stirring paddle, and the distance between the bottom of the stirring paddle and the bottom of the crucible is 5-8mm; the mold is made of a foaming refractory material; the initial temperature of the crystallization annealing furnace is 540 DEG C. The glass has the advantages of being high in visible light transmittance, low in chemical solubility, moderate in hardness, strength and toughness, low in cost, simple in preparation process and suitable for large-scale manufacturing.

Description

technical field [0001] The invention relates to the technical field of tooth veneer materials, in particular to an anterior tooth veneer porcelain material and a preparation method thereof. Background technique [0002] Human teeth are tissues that are prone to disease, and the tooth structure is often damaged due to various types of lesions or injuries. At this time, various types of dental restoration materials are needed to restore the use and aesthetic functions of the teeth. Among the materials used for dental restoration, glass / ceramic restorative materials have excellent mechanical properties, bioaffinity and aesthetic effects, so they are the most widely used. Veneer porcelain material for teeth. Among glass / ceramic dental restorative materials, lithium disilicate glass-ceramic system materials have significant comprehensive advantages and are currently the most widely used. They are an important development direction and research focus of dental restorative materia...

AI Technical Summary

Problems solved by technology

[0003] However, the existing lithium disilicate glass-ceramic system tooth restoration materials have the disadvantage of low visible light transmittance, which is difficult to be used as anterior tooth veneer porcelain materials

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