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A 3D printing zirconia-based denture material and its application

A 3D printing, zirconia-based technology, applied in the field of medical devices, can solve the problems of unsuitable for denture manufacturing, high cost of ceramic teeth, poor chemical stability, etc., to shorten the processing cycle, solve the effect of difficult processing and high hardness

Inactive Publication Date: 2019-07-02
AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And for some metal-based dentures, their wear resistance is poor, their chemical stability is poor, and they are more and more unsuitable for the manufacture of dentures.
In recent years, ceramic teeth with high hardness and high wear resistance have attracted more and more attention. However, the difficulty of processing ceramics also doubles the cost of ceramic teeth.

Method used

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  • A 3D printing zirconia-based denture material and its application
  • A 3D printing zirconia-based denture material and its application
  • A 3D printing zirconia-based denture material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Step 1. Prepare zirconia slurry with 10g of zirconia ceramic powder (ingredient distribution ratio: 1wt.% 500nm, 1 wt.% 1μm, 98 wt.% 10μm), 5g polylactic acid, and 15g acetone.

[0018] Step 2, the zirconia slurry is loaded into the printer barrel and printed into the ceramic embryo of the denture; the STL file of the personalized denture is imported into the 3D printer control software; the software cuts the denture file into a G code path; the zirconia slurry The material is extruded according to the path of the denture to form the ceramic embryo of the personalized denture.

[0019] Step 3: Dry the printed denture model and volatilize excess acetone; after the acetone volatilizes, sinter. The sintering temperature curve is: 1°C / min to 400°C; 400°C for 2 hours, 1 °C / min to raise the temperature to the highest temperature of 1420 °C, keep the temperature at 1420 °C for 8 hours, cool the furnace to room temperature, and grind and polish the sintered denture.

[0020] S...

Embodiment 2

[0022] Step 1, 9g of zirconia ceramic powder (ingredient distribution ratio 1wt.% 500nm, 1 wt.% 1μm, 98 wt.% 10μm), 1g of hydroxyapatite ceramic powder, 5g of polylactic acid, and 15g of acetone were prepared to form a molding slurry.

[0023] Step 2, the molding slurry is loaded into the printer barrel and printed into a denture ceramic embryo; the STL file of the personalized denture is imported into the 3D printer control software; the software cuts the denture file into a G code path; the molding slurry follows the The path of the denture is extruded to form the ceramic embryo of the personalized denture.

[0024] Step 3: Dry the printed denture model and volatilize excess acetone; after the acetone volatilizes, sinter. The sintering temperature curve is: 1°C / min to 400°C; 400°C for 2 hours, 1 °C / min to raise the temperature to the highest temperature of 1420 °C, keep the temperature at 1420 °C for 8 hours, cool the furnace to room temperature, and grind and polish the sin...

Embodiment 3

[0027] Step 1, 8g of zirconia ceramic powder (ingredient distribution ratio 1wt.% 500nm, 1 wt.% 1μm, 98 wt.% 10μm), 2g of hydroxyapatite ceramic powder, 5g of polylactic acid, and 15g of acetone were prepared to form a slurry.

[0028] Step 2, the molding slurry is loaded into the printer barrel and printed into a denture ceramic embryo; the STL file of the personalized denture is imported into the 3D printer control software; the software cuts the denture file into a G code path; the molding slurry follows the The path of the denture is extruded to form the ceramic embryo of the personalized denture.

[0029] Step 3: Dry the printed denture model and volatilize excess acetone; after the acetone volatilizes, sinter. The sintering temperature curve is: 1°C / min to 400°C; 400°C for 2 hours, 1 °C / min to raise the temperature to the highest temperature of 1420 °C, keep the temperature at 1420 °C for 8 hours, cool the furnace to room temperature, and grind and polish the sintered de...

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Abstract

The invention discloses a 3D printing zirconia based denture material and application of the same and bases on 3D printing ceramic rapid prototyping technology. The denture is evenly mixed in a solvent by zirconia ceramic powder and / or hydroxyapatite bioceramic powder and binder compounded into a molding slurry adapted to an extrusion type 3D printer. The slurry is used to print the ceramic embryo of the personalized denture through the 3D printer. After being sintered at high temperature, the print molded denture ceramic embryo is capable of obtaining a printed zirconia denture with high hardness and good wear resistance. The resulting denture is polished and can be applied to mouths of patients.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a 3D printed zirconia-based denture material and its application. The 3D printed ceramic rapid prototyping technology is used to manufacture personalized zirconia dentures, which are applied to the restoration of tooth defects. Background technique [0002] Denture is an important method applied to the restoration of tooth defects. Metal is a common denture material at present. The main materials are nickel-chromium alloy, titanium alloy, cobalt-chromium alloy, etc., and the processing methods are cumbersome. Wax casting is the main production process. , the auxiliary process is cumbersome and the working environment is poor. In addition, some heavy metal elements, such as nickel and cobalt, will produce trace chemical reactions in the oral environment, causing allergic reactions in the human body. And for some metal-based dentures, their wear resistance is poor, their...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/02C04B35/48C04B35/634B33Y70/00B33Y10/00A61C13/083
CPCA61C13/083B33Y10/00B33Y70/00C04B35/48C04B35/6346C04B2235/3212C04B2235/6562C04B2235/96
Inventor 夏阳章非敏秦天牧马俊青朱朋飞
Owner AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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