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Rapid sintering method for a dental zirconium oxide ceramic

A zirconia ceramic, rapid sintering technology, applied in dentistry, dental preparations, dental prostheses, etc., can solve the problems of loss of transparency and difficult dental acceptance, and achieve the effects of simple equipment, low cost and low energy consumption

Inactive Publication Date: 2017-09-15
AIDITE (QINHUANGDAO) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zirconia that loses its transparency is like a stone and is difficult to accept in dentistry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Turning the current mainstream 3% mol stabilized zirconia ceramic blocks in dentistry to obtain standard slices and full crowns of posterior teeth. The traditional sintering furnace and the fast firing furnace were used for sintering respectively. The fast firing furnace is raised to 1200°C at a rate of 100°C / min, and then raised to 1550°C at a rate of 10°C / min, and kept for 20 minutes. Raise to 900°C, keep at 900°C for 30 minutes, then raise the temperature to 1550°C at a rate of 5°C per minute, keep at 1550°C for 120 minutes, take out the teeth and standard slices after cooling down.

[0019] The standard sheet was tested for transparency with a spectrophotometer D65 light source, and the Vickers hardness was tested with a hardness tester. The measured transparency was 42%, and the Vickers hardness was 1496; 1504. The two data are basically consistent. There is no difference between the appearance of the full crown of the posterior teeth and the sintering of ordina...

Embodiment 2

[0021] Turning the current mainstream 5% mol stabilized zirconia porcelain ingots in public dentistry to obtain standard slices and full crowns of posterior teeth. The traditional sintering furnace and the fast firing furnace were used for sintering respectively. The fast firing furnace is raised to 1200°C at a rate of 120°C / min, and then raised to 1530°C at a rate of 7°C / min, kept for 25 minutes, and the teeth and standard pieces are taken out after cooling down; the speed of traditional sintering furnace is 5°C / min Raise to 900°C, keep at 900°C for 30 minutes, then raise the temperature to 1530°C at a rate of 3°C per minute, keep at 1530°C for 120 minutes, take out the teeth and standard slices after cooling down.

[0022] The penetration test of the standard sheet was carried out with a spectrophotometer D65 light source, and the Vickers hardness was tested with a hardness tester. The measured permeability of the speed-fired zirconia was 49%, and the Vickers hardness was 14...

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Abstract

The present invention discloses a rapid sintering method for a dental zirconium oxide ceramic. The rapid sintering method is characterized in that a rapid sintering furnace with a heating rate of 120 DEG C / min and designed by our company is used, a 3% mol Y stabilized zirconium oxide tooth material commonly used in dentistry and a 5% mol Y stabilized zirconium oxide tooth material commonly used in dentistr are used as raw materials, and the sintering method is controlled to adapted to the materials, such that the teeth can achieve the same effect as the effect obtained by using the traditional 7-15 h sintering method commonly used in dentistry after the 3% mol Y stabilized zirconium oxide and the 5% mol Y stabilized zirconium oxide are completely sintered within 0.5-1.5 h, wherein the transparency of the material cannot be reduced.

Description

technical field [0001] The invention relates to a rapid sintering method for dental zirconia ceramics, which belongs to the field of oral cavity materials. Background technique [0002] In recent years, with the development of the application of zirconia in the field of oral materials, various brands of zirconia dental ceramic materials have been launched. Compared with porcelain teeth, zirconia ceramics have the following advantages: 1. The best aesthetic effect: zirconia has good optical properties and stable chemical properties, so the light transmission of porcelain teeth made of porcelain teeth is better and more realistic, and it is not easy to insert into the back of the neck. Like other metals it turns black and turns blue. 2. Best biocompatibility: The small thermal conductivity of zirconia is good for pulp protection. Because of its acid and alkali resistance, it is non-toxic, non-irritating, non-allergic and non-corrosive to the gums. Its biocompatibility is bett...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/64C04B35/48A61K6/02A61K6/00A61C13/083
CPCA61C13/083C04B35/48C04B35/64C04B2235/6567C04B2235/6562C04B2235/3225A61K6/15A61K6/818
Inventor 李洪文王丁周生刚
Owner AIDITE (QINHUANGDAO) TECH CO LTD
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