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High-precision dyeing method for zirconium oxide porcelain block

A dyeing method and technology of zirconia, which are applied in pharmaceutical formulations, dental preparations, dental prostheses, etc., can solve the problems such as the influence of physical properties such as the strength of zirconia ceramic blocks and finished ceramic blocks, and changes in physical and chemical characteristics that are not reliably solved.

Active Publication Date: 2019-11-19
湖南鹏登生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a high-precision dyeing method for zirconia ceramic blocks, the specific steps of which are as follows:

[0025] In the first step, the zirconia powder is selected, and the zirconia powder is evenly divided into different equal parts;

[0026] In the second step, different concentrations of accelerator raw materials are added to each part of the zirconia powder, and marked for use;

[0027] In the third step, the zirconia powder with different marks is pressed into different layers to form a zirconia cake, and the cake is sintered to form a preliminary zirconia ceramic block;

[0028] The fourth step is to prepare the dyeing agent, mix the raw materials, and fully stir to form the dyeing agent;

[0029] In the fifth step, the zirconia ceramic block in the third step is put into the dyeing agent obtained in the fourth step, and it is fully placed, and the zirconia ceramic block fully absorbs the dyeing solution;

[0030] In the sixth step, the zi...

Embodiment 2

[0040] The invention provides a high-precision dyeing method for zirconia ceramic blocks, the specific steps of which are as follows:

[0041] In the first step, the zirconia powder is selected, and the zirconia powder is evenly divided into different equal parts;

[0042] In the second step, different concentrations of accelerator raw materials are added to each part of the zirconia powder, and marked for use;

[0043] In the third step, the zirconia powder with different marks is pressed into different layers to form a zirconia cake, and the cake is sintered to form a preliminary zirconia ceramic block;

[0044] The fourth step is to prepare the dyeing agent, mix the raw materials, and fully stir to form the dyeing agent;

[0045] In the fifth step, the zirconia ceramic block in the third step is put into the dyeing agent obtained in the fourth step, and it is fully placed, and the zirconia ceramic block fully absorbs the dyeing solution;

[0046] In the sixth step, the zi...

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PUM

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Abstract

The invention discloses a high-precision dyeing method for a zirconium oxide porcelain block. The high-precision dyeing method comprises the following steps: 1, selecting zirconium oxide powder; 2, adding accelerant raw materials with different concentrations into each part of the zirconium oxide powder; 3, dividing zirconium oxide powder with different marks into different layers and carrying outcompression molding on the different layers of the zirconium oxide powder; 4, blending a coloring agent, and mixing the coloring agent with raw materials; 5, putting a zirconium oxide porcelain blockobtained in the step 3 into the coloring agent obtained in the step 4; and 6, taking out the zirconium oxide porcelain block in a dyeing solution of the step 5, and carrying out sintering again to form the desired zirconium oxide porcelain block with different color gradients. In dyeing process, a sintered block is dissolved in water to form a pasty colloid, and the pasty colloid is adsorbed on zirconium oxide and can promote the bonding of zirconium oxide and the coloring agent; and during the processing of the zirconium oxide porcelain block, the accelerator water glass is allowed to form gradient changes in concentration, zirconium oxide at different levels is different in absorption of the coloring agent, and different coloring agent absorption effects present uniform color change under the condition of sufficient time.

Description

technical field [0001] The present invention relates to the technical field of zirconia ceramic blocks, in particular to a high-precision dyeing method for zirconia ceramic blocks. Background technique [0002] Currently, in prosthodontics, color and light transmittance are important indicators that affect the objectivity of restorations and teeth. The use of dental CAD / CAM technology to make all-ceramic restorations opens up a new way for the automatic processing of restorations and the manufacture of high-strength all-ceramic crowns and bridges. The color of unpigmented zirconia 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 itself to be close to the color and transmittance of the teeth to be repaired, can the needs of customers be met. At present, there ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B41/85A61K6/02
CPCC04B35/48C04B35/622C04B41/85C04B41/5089C04B41/5009C04B41/5012C04B41/4535C04B41/0072
Inventor 唐洁
Owner 湖南鹏登生物科技股份有限公司