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A zirconia denture with gradient mechanical properties and its manufacturing method

A manufacturing method and technology of zirconia, applied in ceramic products, household appliances, other household appliances, etc., can solve the problems of natural tooth wear, low fracture toughness, high hardness, etc., and achieve improved life expectancy, excellent performance, and comprehensive performance improvement. Effect

Active Publication Date: 2020-04-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lower fracture toughness and higher hardness of zirconia ceramics lead to severe wear of the contralateral natural tooth and become the main reason for its further development

Method used

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  • A zirconia denture with gradient mechanical properties and its manufacturing method
  • A zirconia denture with gradient mechanical properties and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Use mimics software to carry out three-dimensional reconstruction of CT data, 3-matic software design pore size, porosity and pore arrangement according to mechanical performance requirements and installation requirements, and then use Cura slice software to slice layer thickness, exposure time of each layer and other parameters Set up, adding support structures if necessary. Take 15mL of trimethylolpropane triacrylate and 5mL of ethoxylated pentaerythritol tetraacrylate as photocurable resin monomers; weigh 0.99g of Tego 685 dispersant, 0.11g of polymerization inhibitor MQ, and 0.22g of leveling agent, 0.22g defoamer and 0.22g graphite dye. The resin monomer and various additives were evenly mixed, and ball milled in a ball mill at a speed of 800 rpm / min for 4 hours to obtain a premixed liquid. Then weigh 33g of zirconia powder (particle size 100 μm) and 1.1g of photoinitiator diacylphosphine oxide 819, and ball mill at a speed of 800rpm / min for 2h in a ball mill to o...

Embodiment 2

[0047] Use mimics software to perform three-dimensional reconstruction of CT data. Magics software designs pore size, porosity and pore arrangement according to mechanical performance requirements and installation requirements, and then uses Cura slice software to set slice layer thickness, exposure time of each layer and other parameters. Add support structures as necessary. Take 15mL of trimethylolpropane triacrylate and 5mL of ethoxylated pentaerythritol tetraacrylate as photocurable resin monomers; weigh 6.2g of Tego 685 dispersant, 0.44g of polymerization inhibitor MQ, and 1.1g of leveling agent, 1.1g defoamer and 1.1g graphite dye. The resin monomer and various additives were evenly mixed, and ball milled in a ball mill at a speed of 1000 rpm / min for 6 hours to obtain a premixed liquid. Take again 32g of zirconia powder (100 μm in particle size), and ball mill it for 2 h at a speed of 1000 rpm / min in a ball mill; then weigh 1.1 g of photoinitiator diacylphosphine oxide ...

Embodiment 3

[0049] Use mimics software to perform three-dimensional reconstruction of CT data. Magics software designs pore size, porosity and pore arrangement according to mechanical performance requirements and installation requirements, and then uses Cura slice software to set slice layer thickness, exposure time of each layer and other parameters. Add support structures as necessary. Take 15mL of trimethylolpropane triacrylate and 5mL of ethoxylated pentaerythritol tetraacrylate as photocurable resin monomers; weigh 3.4g of Tego 685 dispersant, 0.25g of polymerization inhibitor MQ, and 0.62g of leveling agent, 0.62g defoamer and 0.62g graphite dye. The resin monomer and various additives were evenly mixed, and ball milled in a ball mill at a speed of 1000 rpm / min for 6 hours to obtain a premixed solution. Take again 62g of zirconia powder (100 μm in particle size), and ball mill it for 2 h at a speed of 1000 rpm / min in a ball mill; then weigh 2.2g of photoinitiator diacylphosphine ox...

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Abstract

The invention discloses a zirconium oxide false tooth with gradient mechanical properties, and a manufacturing method of the zirconium oxide false tooth. The false tooth comprises an integrally formedbase body and an occlusal surface positioned on the base body, wherein the occlusal surface is provided with a plurality of pores which pass through the interior of the base body; the occlusal surface part and the base body part have different porosities and pore sizes, and the pores are internally filled with dental repairing resin or polyetheretherketone, so that the occlusal surface part has aself-lubricating property, and the excessive wear of the natural surface (4) at the opposite side of the zirconium oxide false tooth is avoided; the manufacturing method comprises the following steps: (1) designing a porous part and preparing a printed document; (2) preparing slurry; (3) forming a green body; (4) carrying out degreasing and sintering treatment; (5) injecting the polyetheretherketone or photosensitive resin for dental restoration. The manufacturing method provided by the invention is used for improving the fracture toughness of a zirconium oxide ceramic material and reducing the hardness so as to enable the zirconium oxide false tooth to be matched with the hardness of natural teeth and human skeleton; the zirconium oxide false tooth can meet demands of clinical applications such as dental prosthesis, false teeth, bone repair and bone filling.

Description

technical field [0001] The invention belongs to the technical field of oral prosthesis manufacture, and in particular relates to a zirconia denture with gradient mechanical properties and a manufacturing method thereof. Background technique [0002] Zirconia ceramic materials have good comprehensive properties such as high melting point, high hardness, high wear resistance, oxidation resistance, etc., and the source of production raw materials is sufficient, the manufacturing cost is low, and it is suitable for large-scale industrial production. It is widely used in the field of biomedicine, especially in the field of oral restorations, due to its excellent mechanical properties and biological properties. However, the lower fracture toughness and higher hardness of zirconia ceramics lead to severe wear of the contralateral natural tooth, which became the main reason for its further development. [0003] Polyetheretherketone (PEEK) is a semi-crystalline thermoplastic polymer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/083A61C13/097C04B35/486C04B35/622C04B38/06
CPCA61C13/083A61C13/097C04B35/486C04B35/622C04B38/067C04B2235/6562C04B2235/6567
Inventor 刘亚雄刘绘龙张玉琪任辉连芩王玲贺健康
Owner XI AN JIAOTONG UNIV
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