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A high-strength ceramic composite material for dental restoration and its preparation method

A ceramic composite material and dental restoration technology, which is applied in the direction of dental preparations, dentistry, dental prosthesis, etc., can solve the problems of large variation range of strength value, unstable performance, and difficulty in application, so as to improve stability and good glossy, high-intensity effects

Active Publication Date: 2021-11-23
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the lithium disilicate glass-ceramic materials prepared by the above methods are aimed at improving the bending strength of the material, either the strength of the prepared material is low, or the variation range of the strength value is large. Difficult to achieve practical application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. This embodiment is a high-strength ceramic composite material for dental restoration, the raw material composition of which is: SiO 2 40.3wt%, Li 2 CO 3 30.0wt%, Al 2 o 3 4.2wt%, K 2 CO 3 3.9wt%, (NH 4 ) 2 ·HPO 4 7.4wt%, ZrSiO 4 10.3wt%, Y 2 o 3 1.0wt%, MgO 1.4wt%, and colorant CeO 2 0.5wt%, TiO 2 1.0 wt%; the material is a ceramic composite material containing three phases of zirconia, lithium disilicate and residual glass phase.

[0021] 2. The preparation method of the above-mentioned high-strength ceramic composite material for dental restoration, the steps are as follows:

[0022] (1) After passing through a 100-mesh standard sieve and mixing the components of the above-mentioned raw materials evenly, place them in a quartz crucible and place them in a silicon-molybdenum rod electric furnace, and heat them at 1500°C for 2 hours to melt, forming a high-temperature liquid phase and ZrSiO 4The melt is uniformly mixed with solid particles, then cooled ...

Embodiment 2

[0026] 1. This embodiment is a high-strength ceramic composite material for dental restoration, the raw material composition of which is: SiO 2 38.9wt%, Li 2 CO 3 29.6wt%, Al 2 o 3 4.2wt%, K 2 CO 3 3.8wt%, (NH 4 ) 2 ·HPO 4 7.3wt%, ZrSiO 4 12.6wt%, Y 2 o 3 1.9wt%, MgO 1.0wt%, and colorant CeO 2 0.2wt%, TiO 2 0.5 wt%; the material is a ceramic composite material containing three phases of zirconia, lithium disilicate and residual glass phase.

[0027] 2. The preparation method of the above-mentioned high-strength ceramic composite material for dental restoration, the steps are as follows:

[0028] (1) After mixing the components of the above-mentioned raw materials through a 150-mesh standard sieve, place them in a quartz crucible and put them in a silicon-molybdenum rod electric furnace, and heat them at 1480°C for 2.5 hours to melt, forming a high-temperature liquid phase and ZrSiO 4 The melt is uniformly mixed with solid particles, then cooled to 1400°C and kept...

Embodiment 3

[0032] 1. This embodiment is a high-strength ceramic composite material for dental restoration, the raw material composition of which is: SiO 2 37.1wt%, Li 2 CO 3 28.8wt%, Al 2 o 3 4.1wt%, K 2 CO 3 3.7wt%, (NH 4 ) 2 ·HPO 4 7.1wt%, ZrSiO 4 14.7wt%, Y 2 o 3 1.4wt%, MgO 1.9wt%, and colorant CeO 2 0.5wt%, TiO 2 0.7wt%; the material is a ceramic composite material containing three phases of zirconia, lithium disilicate and residual glass phase.

[0033] 2. The preparation method of the above-mentioned high-strength ceramic composite material for dental restoration, the steps are as follows:

[0034] (1) After passing through a 200-mesh standard sieve and mixing the components of the above-mentioned raw materials evenly, place them in a quartz crucible and put them in a silicon-molybdenum rod electric furnace, and heat them at 1520°C for 1.5h to melt, forming a high-temperature liquid phase and ZrSiO 4 The melt is uniformly mixed with solid particles, then cooled to 14...

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Abstract

The invention discloses a high-strength ceramic composite material for dental restoration, the raw material composition of which is: SiO 2 31~41wt%, Li 2 CO 3 25~31wt%, Al 2 o 3 2~5wt%, K 2 CO 3 2~4wt%, (NH 4 ) 2 ·HPO 4 2~8wt%, ZrSiO 4 7~17wt%, Y 2 o 3 0.5~2wt%, MgO 1~2wt%, and coloring agent CeO 2 0.2~1wt%, TiO 2 0.2-1 wt%; the material is a ceramic composite material containing three phases of zirconium oxide, lithium disilicate and residual glass phase. In addition, a preparation method of the above-mentioned high-strength ceramic composite material for dental restoration is also disclosed. The ceramic composite material of the present invention not only has high strength and stability, but also has chromaticity similar to natural teeth and good optical transmittance, which is beneficial to the realization of practical applications, and is suitable for denture transplantation, orthopedic restoration and other ceramic strength. areas of special request.

Description

technical field [0001] The invention relates to the technical field of medical ceramic materials, in particular to a ceramic composite material for dental restoration and a preparation method thereof. Background technique [0002] With the improvement of people's quality of life and the change of aesthetic concepts, in the process of selecting dental restoration materials, people now pay more attention to the consistency of dentures and their own teeth in terms of color and luster, as well as the mechanical properties, biocompatibility and Parameters related to comfort and so on. Because metal materials cannot be similar to teeth in color and have poor biocompatibility in the human body, they have been gradually eliminated. In terms of material, the tooth itself is a kind of ceramic material, so it is the most ideal solution to use ceramics as the denture material; and compared with metal materials, ceramics not only have significantly improved hardness and wear resistance,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/833C04B35/14
Inventor 肖卓豪罗文艳孔令兵
Owner JINGDEZHEN CERAMIC UNIV
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