Zirconium oxide/resin bionic composite material for denture and preparation method thereof

A biomimetic composite material and composite material technology are applied in the field of zirconia ceramic/biocompatible resin biomimetic composite materials for dentures and their preparation, which can solve the problems of high brittleness, mismatch of hardness and modulus, and difficult processing, and achieve Good plasticity, low equipment requirements and long service life

Active Publication Date: 2018-11-06
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The denture of this invention has good biological activity. However, because its constituent material is still zirconia and contains micro-nano holes, there are still brittleness, difficulty in processing, and serious mismatch between hardness and modulus of zirconia dentures and human teeth. question

Method used

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  • Zirconium oxide/resin bionic composite material for denture and preparation method thereof
  • Zirconium oxide/resin bionic composite material for denture and preparation method thereof
  • Zirconium oxide/resin bionic composite material for denture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In this example, a zirconia / polymethyl methacrylate biomimetic composite material for dentures with a lamellar structure was prepared. The raw materials used mainly include yttria stabilized zirconia powder (the average particle size is 50nm), deionized water, methyl methacrylate, hydroxypropyl methylcellulose powder (the average particle size is 180μm), sucrose, polyethylene Alcohol and Darvan CN dispersant, Darvan CN dispersant is the slurry dispersant that U.S. Vanderbilt Company (R.T.Vanderbilt) produces, and concrete preparation process is as follows:

[0052] (A) Preparation of zirconia slurry

[0053] Add 130 g of deionized water into a 500 ml plastic jar, add 70 g of yttria-stabilized zirconia powder into the bottle, and stir at a speed of 60 rpm until the zirconia powder is evenly dispersed in the water. Place the jar in a constant temperature water bath at 70° C., keep it warm for 30 minutes, slowly add 0.65 g of hydroxypropyl methylcellulose powder into the ...

Embodiment 2

[0064] In this example, a zirconia / polymethyl methacrylate biomimetic composite material for dentures with a lamellar structure was prepared. The raw materials used mainly include yttria stabilized zirconia powder (the average particle size is 50nm), deionized water, methyl methacrylate, hydroxypropyl methylcellulose powder (the average particle size is 180μm), sucrose, polyethylene Alcohol and polyacrylic acid, the difference between the specific preparation process and Example 1 is that the Darvan CN dispersant is changed into polyacrylic acid, and the addition of yttrium oxide stabilized zirconia powder is changed from 70g to 150g, and all the other operations are the same as Example 1 is the same.

[0065] The zirconia / polymethyl methacrylate biomimetic composite material for dentures with lamellar structure can be prepared through the above process. After testing, the volume percentage of zirconia in the composite material is 50%, the bending strength is 230MPa, the comp...

Embodiment 3

[0067] In this example, a zirconia / light-cured polymethyl methacrylate biomimetic composite material for dentures with a brick-wall structure was prepared. The raw materials used mainly include yttria-stabilized zirconia powder (the average particle size is 50nm), deionized water, methyl methacrylate containing photoinitiator, and hydroxypropyl methylcellulose powder (the average particle size is 180μm) , sucrose, polyvinyl alcohol and Darvan CN dispersant, the specific preparation process is as follows:

[0068] Get the zirconia ceramic skeleton with lamellar structure that obtains in embodiment 1 step (C), carry out the following steps successively:

[0069] (A) Vertical compression skeleton

[0070] Place the zirconia ceramic skeleton on a heating platform at 100°C, take 10g of solid paraffin and place it on the skeleton, after the paraffin melts and immerses the skeleton, place the skeleton in a steel mold, and use a hot press at 85°C along the vertical Compress the skel...

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Abstract

The invention relates to the field of composite materials for denture, in particular to a zirconium oxide / resin bionic composite material for the denture and a preparation method thereof. The zirconium oxide / resin bionic composite material is prepared from the following components of 20vol% to 97vol% of zirconium oxide and biocompatible resin, and is of a bionic lamellar structure, a brick-wall structure or a crossed laminating structure in a microscopic way. The zirconium oxide / resin bionic composite material has the advantages that the oriented porous blank with the lamellar structure is obtained by slurry preparation, freezing-casting and vacuum freeze-drying, and is compressed along the lamellar structure direction to form the crossed laminating structure; the zirconium oxide skeletonwith the lamellar structure or crossing laminating structure can be prepared by removing organic matters and sintering, and the zirconium oxide skeleton of the brick-wall structure can be obtained through the vertical compression of the lamellar structure skeleton and the secondary sintering; the surface is subjected to surface modifying and liquid resin monomer permeating, and the resin is polymerized, so as to obtain the zirconium oxide / resin bionic composite material for the denture with the bionic structure; the prepared zirconium oxide / resin bionic composite material is mainly used as thedenture, so as to reduce the abrasion to the normal teeth of a human body by the denture.

Description

technical field [0001] The invention relates to the field of composite materials for dentures, in particular to a zirconia ceramic / biocompatible resin biomimetic composite material for dentures and a preparation method thereof. Background technique [0002] Dentures, also known as "dentures", refer to restorations made after partial or complete loss of normal teeth on the upper and lower jaws of the human body, which can replace the missing teeth to achieve their normal chewing, vocalization, aesthetics and other functions. Thereby reducing the various inconveniences caused by missing teeth to patients. With the development of economy and society and the improvement of people's living standards, oral health has been paid more and more attention by the whole society. However, some unhealthy eating habits in modern society (such as: drinking carbonated drinks with high sugar content, smoking, etc.) and unreasonable oral hygiene habits can easily lead to various oral problems,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/097A61K6/027A61K6/083A61K6/087A61K6/891A61K6/898
CPCA61K6/831A61K6/887A61K6/891A61K6/898
Inventor 刘增乾谈国旗刘艳艳张明阳张哲峰
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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