Light transmission gradually changed zirconium oxide material for dental surgery and preparation process thereof

Abstract

The invention relates to an oral material, in particular to a light transmission gradually changed zirconium oxide material for dental surgery and a preparation process thereof, the light transmission gradually changed zirconium oxide material is an oral material of a zirconium oxide porcelain block used for repairing porcelain tooth in dental surgery and is prepared from following two raw materials of 3Y-TZP and (4-6) Y-PSZ according to a mass ratio of 4: 1 to 2: 1. In the invention, the requirements of anterior teeth cutting end of a young patient on light transmission of the light transmission gradually changed zirconium oxide material can be satisfied. Moreover, after processing into dental corona, porcelain is not required to be applied, therefore, a porcelain fracture phenomenon caused by different expansion coefficients between zirconium oxide and decorative porcelain can be avoided. Meanwhile, the preparation method is simple, the cost is low and the quality is stable.

Description

technical field

[0001] The invention relates to an oral cavity material, in particular to a dental translucent graded zirconia material and a preparation process thereof, and is an oral cavity material for dental restoration of zirconia porcelain blocks for all-ceramic teeth. Background technique

[0002] Since yttrium-stabilized tetragonal zirconia ceramics have good biocompatibility and excellent mechanical properties, especially the fracture toughness is much higher than that of alumina ceramics, zirconia ceramics have been used as the base of dental fixed restorations since the 1990s. crown material. However, due to its single light transmittance, it is generally necessary to put porcelain on the processed inner crown to simulate the natural tooth when it is used for the aesthetic restoration of the anterior teeth of young patients. The difference in thermal expansion coefficient of decorative porcelain and the low bonding strength between decorative porcelain and zirco...