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Dentistry zirconia and leucite compound porcelain powder and preparing method thereof

A zirconia and leucite technology, used in dental preparations, dentistry, dental prostheses, etc., can solve the problem that the mechanical properties of ceramic materials cannot meet the requirements of use well, and reduce the synthesis process and crystal phase distribution. The effect of uniform and improved gold-porcelain matching

Inactive Publication Date: 2008-07-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the metal matrix of ceramic materials requires the lower the temperature of the porcelain, the better, which can avoid or reduce the deformation and oxidation of the metal matrix during porcelain firing. Temperature, the mechanical properties of ceramic materials can not meet the requirements of use

Method used

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  • Dentistry zirconia and leucite compound porcelain powder and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) 73g of high-quality potassium feldspar, 20g of potassium carbonate and 7g of nano-tetragonal zirconia are put into a ball mill jar, add ethanol and a ball mill, and put into a planetary ball mill for ball milling for 5 hours;

[0016] (2) Put the powder through step (1) into an oven to dry for 6 hours, and sieve after ball milling;

[0017] (3) Put the powder in step (2) into a corundum crucible, put the crucible into a high-temperature resistance furnace and raise it to 900°C at 6°C / min, then rise to 1100°C at 4°C / min, keep it warm for 60min, and naturally Chilled porcelain blocks;

[0018] (4) put into the agate ball mill pot after the porcelain block in the step (3) is crushed, add ethanol and ball mill, put into planetary ball mill and ball mill for 24h to get porcelain powder;

[0019] (5) Taking out the porcelain powder in step (4), grinding in a mortar, and sieving to obtain porcelain powder.

[0020] (6) By testing the relevant properties of the magnetic p...

Embodiment 2

[0022] (1) 73g of high-quality potassium feldspar, 20g of potassium carbonate and 7g of nano-tetragonal zirconia are put into a ball mill jar, add ethanol and a ball mill, and put into a planetary ball mill for ball milling for 5 hours;

[0023] (2) Put the powder through step (1) into an oven to dry for 6 hours, and sieve after ball milling;

[0024] (3) Put the powder in step (2) into a corundum crucible, put the crucible into a high-temperature resistance furnace and raise it to 900°C at 6°C / min, then rise to 1200°C at 4°C / min, keep it warm for 60min, and naturally Chilled porcelain blocks;

[0025] (4) put into the agate ball mill pot after the porcelain block in the step (3) is crushed, add ethanol and ball mill, put into planetary ball mill and ball mill for 24h to get porcelain powder;

[0026] (5) Taking out the porcelain powder in step (4), grinding in a mortar, and sieving to obtain porcelain powder.

[0027] (6) By testing the relevant properties of the magnetic p...

Embodiment 3

[0029] (1) 73g of high-quality potassium feldspar, 20g of potassium carbonate and 7g of nano-tetragonal zirconia are put into a ball mill jar, add ethanol and a ball mill, and put into a planetary ball mill for ball milling for 5 hours;

[0030] (2) Put the powder through step (1) into an oven to dry for 6 hours, and sieve after ball milling;

[0031] (3) Put the powder in step (2) into a corundum crucible, put the crucible into a high-temperature resistance furnace and raise it to 900°C at 6°C / min, then rise to 1300°C at 4°C / min, keep it warm for 60min, and naturally Chilled porcelain blocks;

[0032] (4) put into the agate ball mill pot after the porcelain block in the step (3) is crushed, add ethanol and ball mill, put into planetary ball mill and ball mill for 24h to get porcelain powder;

[0033] (5) Take out the ceramic powder in step (4), grind it in a mortar, and sieve to obtain a ceramic powder with an average particle size of 30 μm.

[0034] (6) By testing the rele...

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Abstract

The invention relates to a tooth zirconia / leucite composite porcelain powder and a preparation method thereof. The material includes the following components: 50 to 60 percent of Sio2, 10 to 20 percent of Al2O3, 16 to 30 percent of K2O, 2 to 5 percent of Na2O and 2 to 15 percent of ZrO2. The preparation method of the material relates to: selecting a mineral potassium feldspar powder of the first grade, adding a certain amount of potash, nanometer tetragonal zirconia powder body and ethanol to uniformly mix in a globe mill and acquiring a raw material powder after drying; placing the raw material powder into a corundum crucible to calcine under a temperature of 1000 to 3000 DEG C for 30 to 90 minutes, cooling naturally and acquiring the zirconia / leucite composite porcelain powder with a grain diameter of 10 to 30Mum after crushing the raw material through ball milling. The crystalling phases of the zirconia and the leucite in the porcelain powder are distributed uniformly. The heat expansion coefficient of the powder is (12 to 16) multiplied by 10<-6>K and the anti-bending intensity of the powder is 90 to 130MPa. The invention is also characterized by good color masking property and high fracture toughness property, etc., and lays a foundation for the clinic application of mouth porcelain repairing.

Description

technical field [0001] The invention relates to a novel zirconia / leucite composite ceramic and a preparation method thereof, which are mainly used in the field of dental porcelain restoration. Background technique [0002] Dental ceramic materials have become the most important method for the treatment of tooth loss due to their good biocompatibility, wear resistance and corrosion resistance, natural and lifelike color since they were used clinically. Among them, the most widely used metal-based ceramic material is a composite of metal and ceramic materials made by high-temperature firing. This material not only has the characteristics of high strength and toughness of metal materials, good edge adhesion, etc., but also has lifelike color of ceramics. With the advantages of good corrosion resistance and wear resistance, and strong self-cleaning effect, it is a commonly used and ideal restoration material for clinical restoration of teeth and denti...

Claims

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Application Information

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IPC IPC(8): A61K6/02
Inventor 尹光福康明廖晓明康云清黄忠兵姚亚东陈堃肖守春
Owner SICHUAN UNIV
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