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Rapid coloring process of lithium disilicate microcrystalline glass

A technology of glass-ceramics and lithium disilicate, which is applied in the field of dental materials, can solve the problems of affecting the color matching effect and easy wear of the dyed layer, and achieves the effects of wide application range, low production cost and good semi-permeability

Inactive Publication Date: 2020-09-29
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, clinical practice shows that the restoration made by external dyeing method is easy to wear due to the thin dyed layer, which affects the original color matching effect.

Method used

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  • Rapid coloring process of lithium disilicate microcrystalline glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a Weighing: Weigh the matrix glass powder and colorant, then put them into a ball mill jar for ball milling, mix well to obtain the matrix glass powder and colorant mixture; wherein, the molar percentage of matrix glass powder and colorant is 99:1, The molar percentages of each component in the matrix glass powder are potassium oxide 34%, silicon dioxide 41%, lithium oxide 1%, aluminum oxide 5%, phosphorus oxide 5%, zirconium oxide 11%, and sodium oxide 2%;

[0027] b Melting: put the matrix glass powder and colorant mixture obtained in step a into a muffle furnace for calcination, the calcination temperature is 800°C, and the calcination time is 30min, remove the carbon and nitrogen in the matrix glass powder and colorant mixture, and The calcined matrix glass powder and colorant mixture are melted in a high-temperature program-controlled furnace at a melting temperature of 1600°C and a melting time of 30 minutes to obtain a fully melted glass liquid for later use;

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Embodiment 2

[0031] a Weighing: Weigh the matrix glass powder and colorant, then put them into a ball mill jar for ball milling, mix well to obtain the matrix glass powder and colorant mixture; wherein, the molar percentage of matrix glass powder and colorant is 99:1, The molar percentages of each component in the matrix glass powder are potassium oxide 34%, silicon dioxide 41%, lithium oxide 1%, aluminum oxide 5%, phosphorus oxide 5%, zirconium oxide 11%, and sodium oxide 2%;

[0032] b Melting: put the matrix glass powder and colorant mixture obtained in step a into a muffle furnace for calcination, the calcination temperature is 800°C, and the calcination time is 30min, remove the carbon and nitrogen in the matrix glass powder and colorant mixture, and The calcined matrix glass powder and colorant mixture are melted in a high-temperature program-controlled furnace at a melting temperature of 1600°C and a melting time of 120 minutes to obtain a fully melted glass liquid for later use;

...

Embodiment 3

[0036] a Weighing: Weigh the matrix glass powder and colorant, then put them into a ball mill jar for ball milling, mix well to obtain the matrix glass powder and colorant mixture; wherein, the molar percentage of matrix glass powder and colorant is 99:1, The molar percentages of each component in the matrix glass powder are potassium oxide 34%, silicon dioxide 41%, lithium oxide 1%, aluminum oxide 5%, phosphorus oxide 5%, zirconium oxide 11%, and sodium oxide 2%;

[0037] b Melting: put the matrix glass powder and colorant mixture obtained in step a into a muffle furnace for calcination, the calcination temperature is 800°C, and the calcination time is 30min, remove the carbon and nitrogen in the matrix glass powder and colorant mixture, and The calcined matrix glass powder and colorant mixture are melted in a high-temperature program-controlled furnace at a melting temperature of 1600°C and a melting time of 30 minutes to obtain a fully melted glass liquid for later use;

[...

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Abstract

The invention provides a rapid coloring process of lithium disilicate microcrystalline glass. According to the invention, matrix glass powder and pigment are used as raw materials and subjected to high-temperature calcination, carbon and nitrogen removal and melting to prepare molten glass, the molten glass is poured into a mold preheated in advance to form colored glass blocks, the colored glassblocks are rapidly put into an annealing furnace, and cooling is conducted after stress relief annealing, so colored microcrystalline glass is obtained. According to the rapid coloring process of thelithium disilicate microcrystalline glass, the manufactured lithium disilicate microcrystalline glass is uniform in color, free of chromatic aberration, moderate in strength, short in coloring time, low in manufacturing cost, rich in color, glossy in appearance and appropriate in transparency, meets the requirements and standards of dental materials, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of dental materials, in particular to a rapid coloring process of lithium disilicate glass-ceramics. Background technique [0002] With the progress of human society, the development of economy and the improvement of medical level, the average life expectancy of people is gradually increasing. Not only developed countries, but also some developing countries, including China, have gradually entered the stage of population aging. However, due to the improvement of human living standards, the diet structure has changed to refined food, resulting in a continuous decline in the lifespan of human teeth, while the number of elderly people who need dental restorations is rapidly increasing. In today's society where the pace of life is accelerating and job competition is becoming increasingly fierce, young people pay more attention to maintaining a healthy lifestyle and a good appearance in order to gain a competiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/04C03C4/02C03C4/00C03C1/04C03C12/00C03C1/02C03B5/16C03B25/00C03B32/02
CPCC03B5/16C03B25/00C03B32/02C03C1/026C03C1/04C03C4/0021C03C4/02C03C10/0018C03C12/00
Inventor 张琪仲文吴宇鑫余任飞彭媛媛吉昊彭兵刘鸿琳林燕喃李泳
Owner NANJING VOCATIONAL UNIV OF IND TECH
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