Zirconia porcelain block for all-porcelain denture, and preparation process thereof

A technology of zirconia and stabilized zirconia, applied in the direction of additive processing, etc., can solve the problems of complex dyeing process, single overall color and light transmittance, and rigid changes in color and light transmittance

Active Publication Date: 2020-04-28
SUZHOU DINGAN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention can not only solve the production process of the existing all-ceramic denture prosthesis with single overall color and light transmittance, complex dyeing process in the later stage, and the existing multi-layer light-transmitting gradient color all-ceramic denture in the production process of zirconia porcelain blocks. Complicated, the thickness of each layer is too large, the color and light transmittance vary greatly according to the layer, the color and light transmittance change is blunt, uncoordinated, and unnatural; it can meet the requirements of the incisal end of all-ceramic dentures for light transmittance and color (color saturation) Degree) quasi-continuous gradient change, at the same time, it can simulate the change law of natural tooth color and light transmittance, the change is gentle and natural, and the physical and chemical properties of the product are consistent and stable, can be precisely controlled and customized, the preparation process is simple, and the operation is convenient

Method used

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  • Zirconia porcelain block for all-porcelain denture, and preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Using 3mol% Y with particle sizes of 1-10 μm, 10-50 μm and 50-100 μm respectively 2 o 3 Partially stabilized zirconia spherical powder is mixed according to the volume ratio of 5, 22 and 73vol% to prepare a special mixed powder for inkjet printing with multi-level particle size distribution, and put it into the 1# powder box; The blank ink of oxide powder is loaded into the ink cartridge of 0# inkjet head; it contains 17700ppmY 3+ and 50ppmAl 3+ The ionic aqueous solution anti-reflection ink is loaded into the ink cartridge of the 1# inkjet head. According to the performance and specification requirements of zirconia blocks for all-ceramic dentures with quasi-continuous change in light transmittance, and considering the shrinkage of zirconia blocks after cold isostatic pressing and pre-firing, the diameter of zirconia blocks is set is 132mm, and the total thickness is 16.4mm; the thickness of a single layer of powder coating is 200μm (that is, a total of 82 layers ne...

Embodiment 2

[0072] Using 4mol% Y with particle sizes of 1-10 μm, 10-50 μm and 100-200 μm respectively 2 o 3 Partially stabilized zirconia spherical powder is mixed according to the volume ratio of 10, 25 and 65vol% to prepare a special mixed powder for inkjet printing with multi-level particle size distribution, and put it into the 1# powder box; The blank ink of oxide powder is packed in the ink cartridge of 0# ink-jet head; 3192ppmFe 3+ , 9.3ppmMn 3+ and 25047ppmEr 3+The ionic aqueous solution coloring ink is loaded into the ink cartridge of the 1# inkjet head. According to the performance and specification requirements of the zirconia block for all-ceramic dentures with quasi-continuous change in color (color saturation), and considering the shrinkage of the zirconia block body after cold isostatic pressing and pre-firing, the zirconia block is set The green body has a diameter of 132mm and a total thickness of 16.5mm; the thickness of a single layer of powder coating is 500μm (tha...

Embodiment 3

[0075] Using 3mol% Y with particle sizes of 0.01-0.1 μm, 1-10 μm and 10-50 μm respectively 2 o 3 Partially stabilized zirconia spherical powder is mixed according to the volume ratio of 7, 19 and 74vol% to prepare a special mixed powder for inkjet with multi-level particle size distribution, and put it into the 1# powder box; the metal-free and nano-metal oxidized The blank ink of substance powder is packed in the ink cartridge of 0# ink-jet head; Will contain 1.32%Y 2 o 3 , 0.02% MgO, 0.01% CaO, 0.005% TiO 2 and 0.005% Al 2 o 3 The aqueous suspension solution anti-reflection ink of nano-mixed powder is packed in the ink cartridge of 1# ink-jet head; 11350.3ppmFe 3+ , 22.8ppmMn 3+ and 18828ppmEr 3+ The ionic aqueous solution coloring ink is loaded into the ink cartridge of the 2# inkjet head. According to the performance and specification requirements of zirconia blocks for all-ceramic dentures with quasi-continuous changes in color and / or light transmittance, and cons...

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Abstract

The invention provides a zirconia porcelain block for all-porcelain denture, and a preparation process thereof, and belongs to the technical field of dental ceramic materials. According to the invention, the color and / or the light transmittance of the zirconia porcelain block are / is in multilayer quasi-continuous gradient change from one side to the other side in a determined direction; the zirconia porcelain block is prepared by adopting an ink-jet additive printing technology, and is formed by periodically laying powder layer by layer along a determined direction and selectively printing andsuperposing blank ink and / or coloring ink with different solute concentrations and / or anti-reflection ink layer by layer in an ink-jet printing manner by taking partially stabilized zirconia powder as a raw material; the adopted ink-jet additive printing technology is high in forming speed, large-batch production can be achieved, and personalized customization can be achieved; and the produced product is stable in performance, can completely avoid the defects that the existing zirconia porcelain block for the all-porcelain denture is hard in color and / or light transmittance change, unnatural,vivid and the like, and meets the aesthetic repair requirement of the all-porcelain denture .

Description

technical field [0001] The invention relates to the technical field of dental ceramic materials, in particular to a zirconia block for an all-ceramic denture with quasi-continuous change in color and / or light transmittance and a preparation process thereof. Background technique [0002] The use of CAD / CAM technology to make all-ceramic denture restorations has been widely used in the field of oral restoration. Zirconia ingots for all-ceramic dentures have become the main material for all-ceramic denture restorations due to their good biocompatibility, high strength and toughness, superior wear resistance and stability of physical and chemical properties. In prosthodontics, the color layering and light transmittance of zirconia blocks for all-ceramic dentures are an important indicator that affects the consistency of all-ceramic denture restorations and natural teeth. However, commercially available zirconia blocks for all-ceramic dentures are mostly white. Therefore, in ord...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/49C04B35/622B33Y10/00B33Y50/02B33Y70/00B33Y80/00
CPCC04B35/48C04B35/49C04B35/622B33Y10/00B33Y70/00B33Y80/00B33Y50/02C04B2235/3206C04B2235/3208C04B2235/3225C04B2235/3229C04B2235/3224C04B2235/3272C04B2235/3265C04B2235/3244C04B2235/3232C04B2235/3217C04B2235/3281C04B2235/3275C04B2235/3279C04B2235/3239C04B2235/3241C04B2235/3286C04B2235/3293C04B2235/32C04B2235/3298C04B2235/5436C04B2235/6026C04B2235/656C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96C04B2235/9646C04B2235/775
Inventor 范立成乔学斌李亚东李亚军朱阳光徐传艳
Owner SUZHOU DINGAN ELECTRONICS TECH
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