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Preparation method of zirconia biological ceramic for oral cavity repair

A technology of bioceramics and oral restoration, applied in dental preparations, pharmaceutical formulas, dental prostheses, etc., can solve the problems of poor bending strength and wear resistance, limitations, and high prices, achieve good tissue compatibility, and improve satisfaction , Improve the effect of aesthetics

Inactive Publication Date: 2019-06-04
沈阳益泰科信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among many oral ceramics, alumina ceramics were once popular in clinical applications, but their poor bending strength and wear resistance limited their application in the production of posterior crowns and implant abutments.
Therefore, high price, poor strength and brittleness have always restricted the promotion of all-ceramic crown restorations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of the zirconia bioceramics used for oral restoration specifically includes the following steps.

[0017] Step 1, 30 parts of zirconia, 15 parts of nano-alumina, 15 parts of nano-magnesia, 15 parts of nano-titanium oxide, 10 parts of nano-zinc oxide, 10 parts of boron oxide, 10 parts of sodium titanate, and 10 parts of hydroxyapatite , mixed evenly, then dry-milled to a particle size of 200 mesh, fully dried at 100°C, and set aside.

[0018] Step 2, add low-viscosity polyvinyl alcohol and sodium citrate of 1 / 10 of the total weight of the mixed material in step 1 to the distilled water, ultrasonically treat it to dissolve it completely, and add corn of 1 / 5 of the total weight of the mixed material in step 1 to the solution After starching, place it in a water bath, stir at 300r / min for 3-6h, adjust the pH of the solution to 11.5 with sodium hydroxide, and obtain a slurry for later use.

[0019] Step 3. Put the slurry in a cold water bath, add the ...

Embodiment 2

[0023] The preparation method of the zirconia bioceramics used for oral restoration specifically includes the following steps.

[0024] Step 1, 20 parts of zirconia, 10 parts of nano-alumina, 10 parts of nano-magnesia, 10 parts of nano-titanium oxide, 5 parts of nano-zinc oxide, 5 parts of boron oxide, 5 parts of sodium titanate, and 5 parts of hydroxyapatite , mixed evenly, dry-milled to 100 mesh particle size, fully dried at 80°C, and set aside.

[0025] Step 2, add low-viscosity polyvinyl alcohol and sodium citrate of 1 / 10 of the total weight of the mixed material in step 1 to the distilled water, ultrasonically treat it to dissolve it completely, and add corn of 1 / 5 of the total weight of the mixed material in step 1 to the solution After starching, place it in a water bath, stir at 200r / min for 3-6h, adjust the pH of the solution to 11.5 with sodium hydroxide, and obtain a slurry for later use.

[0026] Step 3. Put the slurry in a cold water bath, add the mixture obtaine...

Embodiment 3

[0030] The preparation method of the zirconia bioceramics used for oral restoration specifically includes the following steps.

[0031] Step 1, 25 parts of zirconia, 12 parts of nano-alumina, 12 parts of nano-magnesia, 12 parts of nano-titanium oxide, 8 parts of nano-zinc oxide, 7 parts of boron oxide, 6 parts of sodium titanate, and 7 parts of hydroxyapatite , mixed evenly, dry-milled to 150 mesh particle size, fully dried at 95°C, and set aside.

[0032] Step 2, add low-viscosity polyvinyl alcohol and sodium citrate of 1 / 10 of the total weight of the mixed material in step 1 to the distilled water, ultrasonically treat it to dissolve it completely, and add corn of 1 / 5 of the total weight of the mixed material in step 1 to the solution After starching, place it in a water bath, stir at 230r / min for 5h, adjust the pH of the solution to 11.5 with sodium hydroxide, and obtain a slurry for later use.

[0033] Step 3. Put the slurry in a cold water bath, add the mixture obtained ...

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PUM

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Abstract

The invention belongs to the field of materials, and particularly relates to a preparation method of a zirconia biological ceramic for oral cavity repair, wherein the raw materials comprise, by weight, 20-30 parts of zirconia, 10-15 parts of nanometer alumina, 10-15 parts of nanometer magnesium oxide, 10-15 parts of nanometer titanium oxide, 5-10 parts of nanometer zinc oxide, 5-10 parts of boronoxide, 5-10 parts of sodium titanate, and 5-10 parts of hydroxyapatite. According to the present invention, the prepared zirconia biological ceramic as the novel fine ceramic has advantages of good mechanical properties (fracture toughness, strength, hardness and the like), good biocompatibility, good stability, good aesthetic property, good thermal conductivity and good formability, can well solve the problem of insufficient strength and insufficient toughness of conventional all-ceramic crown materials, has mechanical properties comparable to metals, and can completely bear the chewing forceof posterior teeth.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a method for preparing zirconia bioceramics for oral restoration. Background technique [0002] Biomaterials refer to materials with functions or partial functions of natural organ tissues. They are the latest branch of biomedical science and have broad application prospects. Among them, bioceramics are favored by people because of their excellent biocompatibility, stability, aesthetics and other advantages, and have been widely used in the field of oral restoration clinically. Although the currently widely used metal-ceramic restorations have good mechanical properties, the color of the metal base itself often affects the aesthetic effect of the restoration, and there is a problem that a small number of patients are allergic to precious metals; non-precious metals are easy to corrode, and their biological safety is not ideal. The problem of bonding between metal and ceramic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622A61K6/02
Inventor 葛秋红
Owner 沈阳益泰科信息技术有限公司
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