Composite material for repairing porcelain laminate veneers of teeth

Abstract

The invention discloses a composite material for repairing porcelain laminate veneers of teeth. A SiC-AlN composite ceramic material is adopted. The composite material specifically comprises, by weight, 65-75% of SiC, 10-15% of AlN, 2-3% of TiO2, 5-8% of SiO2, 1-4% of B2O3, 0.5-3% of MgO, 0.5-3% of CaO, 0.5-3% of ZnO, 0.2-2% of Cr2O3 and 0.2-2% of Co2O3. The bending strength of the prepared porcelain laminate veneers of the teeth is 180-210 MPa, and the thermal expansion coefficient is (12.1-12.5)*10<-6> / DEG C.

Description

technical field [0001] The invention relates to a ceramic material for tooth restoration, in particular to a composite material for repairing tooth porcelain veneer. Background technique [0002] Porcelain veneers, also known as dental veneers, use bonding technology to repair tooth surface defects, stained teeth, discolored teeth, and deformed teeth, etc., under the condition of preserving the living pulp, less or no molar teeth, and using restoration materials directly or indirectly. Bonding and covering is a restoration method to restore the normal shape of the tooth and improve its color. The existing cast porcelain veneer and zirconia veneer have more teeth prepared, and the degree of damage to the tooth is higher than that of the porcelain veneer; Moreover, the stained teeth and discolored teeth cannot be completely covered, which affects the aesthetic restoration effect. [0003] Resin veneer refers to a kind of protection that directly or indirectly bonds and fixes ...

AI Technical Summary

Problems solved by technology

At present, there have been studies on the use of zirconia and alumina composite ceramic materials to prepare ceramic veneers, but there are no related reports on their use in tooth porcelain veneers