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Method for manufacturing aluminum oxide toughened composite zirconium oxide false tooth porcelain block

A manufacturing method and technology of zirconia, which can be applied to dentures, etc., can solve problems such as low fracture toughness, chipping, and high brittleness of all-ceramic zirconia denture blocks, and achieve the effect of improving fracture toughness and reducing thickness

Active Publication Date: 2018-09-04
哈尔滨宇航精创科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high brittleness and low fracture toughness of the existing all-ceramic zirconia denture block, difficulty in making multiple long bridge teeth, easy fracture and porcelain collapse of the long bridge teeth during use, and provide a Manufacturing method of alumina toughened composite zirconia denture block

Method used

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  • Method for manufacturing aluminum oxide toughened composite zirconium oxide false tooth porcelain block

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specific Embodiment approach 1

[0027] Embodiment 1: This embodiment is a method for manufacturing alumina toughened composite zirconia denture porcelain block, which is completed according to the following steps:

[0028] 1. Weigh zirconia powder and alumina powder to obtain mixed powder of zirconia and alumina;

[0029] The mass fraction of alumina in the mixed powder of zirconia and alumina described in step 1 is 5% to 10%;

[0030] 2. Add the mixed powder of zirconia and alumina to the drum mixer, then add grinding balls to the drum mixer, and then stir for 30min to 90min at a stirring speed of 100r / min to 300r / min. Obtain composite powder;

[0031] The grinding balls described in step 2 are zirconia balls, and the particle size of the zirconia balls is 2 mm to 8 mm;

[0032] 3. Prepare the solution required for composite powder granulation: mix deionized water, dispersant and binder evenly to obtain the solution required for composite powder granulation;

[0033] The mass ratio of deionized water and...

specific Embodiment approach 2

[0049] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of the zirconia powder in Step 1 is 40nm-80nm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0050] Embodiment 3: The difference between this embodiment and Embodiment 1 or Embodiment 2 is that the particle size of the alumina powder in step 1 is 50nm-80nm. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for manufacturing an aluminum oxide toughened composite zirconium oxide false tooth porcelain block, relates to a method for manufacturing a zirconium oxide false tooth porcelain block and aims to solve the problems that a conventional full-porcelain zirconium oxide false tooth porcelain block is large in brittleness and small in fracture toughness, multiple long bridge teeth are hard to manufacture, and breakage and porcelain fracture can be easily caused when the long bridge teeth are used. The method comprises the following steps: I, preparing mixed powder of zirconium oxide and aluminum oxide; II, preparing composite powder; III, preparing a solution for pelletizing the composite powder; IV, preparing slurry; V, preparing composite spherical granules ofwhich the particle size is 10-30 micrometers; VI, pressing; VII, applying an adhesive, and performing thermal treatment; VIII, sintering, thereby obtaining the aluminum oxide toughened composite zirconium oxide false tooth porcelain block. By adopting the method, the aluminum oxide toughened composite zirconium oxide false tooth porcelain block can be manufactured.

Description

technical field [0001] The invention relates to a method for manufacturing a zirconia denture porcelain block. Background technique [0002] At present, dental restoration materials have gradually developed from initial values ​​to metals, and finally to zirconia denture materials. Zirconia has gradually become a popular dental restoration material because of the good biocompatibility of zirconia ceramics. , and has the enamel texture and transparency close to the natural teeth of the human body, especially the dyed zirconia dentures are closer to the color of natural teeth of the human body, and can be refined to 26 colors, almost covering the color range of common human teeth. However, the natural brittleness of zirconia ceramics hinders the further widespread application of this type of product. For example, the high brittleness makes the thickness of the tooth restoration not too small, otherwise it is easy to collapse the porcelain. Therefore, the thickness of the exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B35/626C04B35/638A61C13/083
CPCA61C13/083C04B35/48C04B35/622C04B35/62605C04B35/638C04B2235/3217C04B2235/6562C04B2235/6567C04B2235/96
Inventor 卢振蒋少松
Owner 哈尔滨宇航精创科技有限公司
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