A dyeing agent and accelerator for high-precision dyeing of zirconia porcelain blocks

Abstract

The invention discloses a dyeing agent for high-precision dyeing of zirconia porcelain blocks, which consists of the following components in weight percent: 1000 parts of deionized water; 10-50 parts of nitrate; 1-10 parts of hydrochloride; a zirconia Accelerator for high-precision dyeing of porcelain block, its main component is water glass, and the effective component of said water glass is HSiO 3 － and H 2 SiO 3 , water glass is easy to adsorb on the surface of zirconia to form a hydrophilic film, which increases the hydrophilicity of the surface of zirconia and promotes it. The invention discloses a dyeing agent and accelerator for high-precision dyeing of zirconia porcelain blocks. During the dyeing process, the sintered block is dissolved in water to form a paste-like colloid, which is adsorbed on zirconia, which can promote zirconia and dyeing. When the zirconia ceramic block is processed, the accelerator water glass can form a gradient change of different concentrations, so that different levels of zirconia can absorb the dyeing agent differently, and the absorption effect can be different in sufficient time. A uniform color change can be exhibited.

Description

technical field [0001] The invention relates to the technical field of zirconia porcelain blocks, in particular to a dye and accelerator for high-precision dyeing of zirconia porcelain blocks. Background technique [0002] Currently, in prosthodontics, color and light transmission are an important indicator affecting the objectivity of restorations and teeth. The use of dental CAD / CAM technology to make all-ceramic restorations has opened up a new way for the automatic processing of restorations and the production of high-strength all-ceramic crowns and bridges. The color of uncolored zirconia porcelain blocks is mostly white to ivory. Although it can simulate the color of natural teeth to a certain extent, it cannot meet the clinical requirements for the color of restorations. Only by coloring zirconia and adjusting the color and light transmittance of zirconia to be close to the color and light transmittance of the tooth to be restored can the needs of customers be met. ...

AI Technical Summary

Problems solved by technology

However, the dip-dyeing process will lead to changes in some physical and chemical characteristics of the porcelain block body, and the physical properties such as the strength of the finished porcelain block will be greatly affected.

Therefore, there is still no reliable solution to the technical problem of making zirconia ceramic blocks with uniform gradient colors in the prior art.