Preparation method for dental coloring zirconia blank

A technology of zirconium oxide and zirconium oxychloride, used in dental preparations, dental prostheses, dentistry, etc., can solve the problems of difficult uniform distribution of colorants, and achieve the effects of low cost, industrialization, and simple preparation process.

Inactive Publication Date: 2012-07-18
SHENZHEN UPCERA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problems existing in the above-mentioned prior art, and provides a preparation method of colored zirconia body for dental use, which solves the problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First take 136.8g zirconium oxychloride as raw material, 17.1g yttrium nitrate as stabilizer, 0.08g praseodymium nitrate, 0.1g gadolinium nitrate, and 0.2g erbium nitrate as colorants to prepare colored nano-zirconia powder by co-precipitation method, and then The prepared zirconia powder is directly isostatically pressed under a pressure of 100 MPa. Finally, the formed body is pre-sintered in a sintering furnace at 1050°C.

Embodiment 2

[0024] First, 136.8g of zirconium oxychloride was used as raw material, 12.6g of yttrium acetate as stabilizer, 1.6g of dysprosium acetate, 0.2g of neodymium acetate, and 0.2g of europium acetate were used as colorants to prepare colored zirconia powder by hydrothermal method, and then the prepared The zirconia powder is directly isostatically pressed under a pressure of 1000MPa. Finally, the formed body is pre-sintered in a sintering furnace at 800°C.

Embodiment 3

[0026] First, 136.8g of zirconium oxychloride was used as raw material, 9.3g of yttrium chloride as stabilizer, 1.0g of cerium chloride, 0.3g of neodymium chloride, and 0.6g of erbium chloride as colorants to prepare colored nano-zirconia powder by sol-gel method body, and then the prepared zirconia powder is formed by dry pressing at 40MPa and directly isostatically pressing at 500MPa. Finally, the shaped body is pre-sintered in a sintering furnace at 1200°C.

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PUM

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Abstract

The invention relates to a preparation method for a dental coloring zirconia blank. The method comprises the following steps of: preparing coloring zirconia powder by taking soluble rare-earth salt as a coloring agent, soluble yttrium salt as a stabilizing agent and zirconium oxychloride as a raw material; molding in the manner of dry pressing, direct isostatic pressing, and combined dry pressing and isostatic pressing; and placing a molded blank into a sintering furnace for pre-sintering, thereby obtaining the dental coloring zirconia blank. The coloring zirconia repairing material provided by the invention is high in strength and excellent in light-transmitting property; the introducing of the coloring agent has minimal influence on the performance of the zirconia; the preparation process is simple and is easily controlled; the cost is low; and the industrialization is easily realized.

Description

technical field [0001] The invention belongs to the technical field of oral ceramic materials and preparation thereof, and in particular relates to a method for preparing a dental colored zirconia green body. Background technique [0002] In recent years, more and more patients and physicians choose all-ceramic materials as permanent restorations in the oral cavity. All-ceramic materials have incomparable advantages over metal, it will not stain the gums, will not have the problem of metal base exposure, there is no corrosion in the mouth, no metal to block the light, and can realistically reproduce the color and translucency of natural teeth. It is the restoration with the best aesthetic effect, and is highly praised by successful people and people in the entertainment industry. [0003] Zirconia ceramics are new biomaterials with good biocompatibility and excellent mechanical properties, which have become the focus of dental ceramics development. Zirconia ceramics are ...

Claims

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Application Information

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IPC IPC(8): C04B35/48A61K6/027
Inventor 王鸿娟黄东斌严庆云何玲玲郑艳春
Owner SHENZHEN UPCERA CO LTD
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