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Dental ceramic material as well as preparation method and application thereof

A dental ceramic and ceramic composite technology, applied in medical science, coating, prosthesis, etc., can solve the problems of cumbersome process, simple structure, unfavorable precise control, etc., to improve the bonding strength and wear resistance, and the spin coating method is simple , excellent performance

Pending Publication Date: 2021-05-11
佛山仙湖实验室
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, gradient materials prepared by traditional dry pressing methods such as titanium / hydroxyapatite composites have simple structures and cumbersome processes, which are not conducive to precise control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A dental ceramic material, comprising a basic body and a multi-layer biomimetic ceramic composite surface layer, the composition of the biomimetic ceramic composite surface layer includes zirconia and calcium phosphate; the phosphoric acid in the biomimetic ceramic composite surface layer of each layer The calcium content is different; the biomimetic ceramic composite surface layer of each layer is formed on the basic body in a gradient according to the order of calcium phosphate content from low to high.

[0028] The preparation method of above-mentioned dental ceramic material, comprises the following steps:

[0029] S1. Using a mechanical wet mixing process, after mixing cerium-stabilized zirconia nanopowder, magnesium aluminum spinel nanofiber, hydroxypropylmethylcellulose aqueous solution and water, ball milling in a ball mill for 24 to 48 hours to obtain a suspension;

[0030] S2. After drying the suspension in vacuum, adding a binder to mix, and then undergoing i...

Embodiment 2

[0034] A dental ceramic material, comprising a basic body and a multi-layer biomimetic ceramic composite surface layer, the composition of the biomimetic ceramic composite surface layer includes zirconia and calcium phosphate; the phosphoric acid in the biomimetic ceramic composite surface layer of each layer The calcium content is different; the biomimetic ceramic composite surface layer of each layer is formed on the basic body in a gradient according to the order of calcium phosphate content from low to high.

[0035] The preparation method of above-mentioned dental ceramic material, comprises the following steps:

[0036] S1. Using a mechanical wet mixing process, mix cerium-stabilized zirconia nanopowder, magnesium aluminum spinel nanofibers, alumina nanofibers, hydroxypropyl methylcellulose aqueous solution and water, and ball mill in a ball mill for 24 to 48 hours , to obtain a suspension;

[0037] S2. After drying the suspension in vacuum, adding a binder to mix, and ...

Embodiment 3

[0041] A dental ceramic material, comprising a basic body and a multi-layer biomimetic ceramic composite surface layer, the composition of the biomimetic ceramic composite surface layer includes zirconia and calcium phosphate; the phosphoric acid in the biomimetic ceramic composite surface layer of each layer The calcium content is different; the biomimetic ceramic composite surface layer of each layer is formed on the basic body in a gradient according to the order of calcium phosphate content from low to high.

[0042] The preparation method of above-mentioned dental ceramic material, comprises the following steps:

[0043] S1. Using a mechanical wet mixing process, after mixing cerium-stabilized zirconia nanopowder, alumina nanofibers, hydroxypropyl methylcellulose aqueous solution and water, ball milling in a ball mill for 24 to 48 hours to obtain a suspension;

[0044] S2. After drying the suspension in vacuum, adding a binder to mix, and then undergoing isostatic pressin...

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PUM

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Abstract

The invention relates to the technical field of ceramic materials, and discloses a dental ceramic material and a preparation method and application thereof. The dental ceramic material comprises a basic blank and multiple bionic ceramic composite surface layers. The bionic ceramic composite surface layers comprise zirconium oxide and calcium phosphate. The contents of calcium phosphate in the bionic ceramic composite surface layers are different. The bionic ceramic composite surface layers are formed on the basic blank in a gradient manner according to the sequence of the calcium phosphate contents from low to high. The dental ceramic material has both mechanical properties and biological properties and can be directly used as an implant or a dental crown during use, and brittle failure and excessive wear phenomena cannot easily occur. According to the invention, the bionic ceramic composite surface layers are prepared on the surface of the basic blank by using a spin-coating method, so that the performance difference between the coating and the basic blank is slowed down, the bonding strength and wear resistance of the coating on the surface of the basic blank are improved, and the dental ceramic material with more excellent performance is obtained.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a dental ceramic material and its preparation method and application. Background technique [0002] Oral implant restoration has become the first choice for the treatment of patients with missing teeth and dentition. Although the continuous progress of processing technology and surface treatment technology has improved the success rate of implants, there are still many problems to be solved. The excellent properties of natural biomaterials can provide useful inspiration for the optimal design of artificial materials, especially the development of high-performance biomimetic materials. Studies have shown that the design of stepwise or continuously gradient cermet composites can improve the interfacial bonding between different solids, minimize and optimize the distribution of thermal stress, suppress the onset of plastic yielding, and relieve the multilayer film freedom...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/48C04B35/447C04B35/622A61L27/50A61L27/32A61L27/30A61L27/10
CPCC04B35/447C04B35/48C04B35/62222A61L27/10A61L27/32A61L27/306A61L27/50A61L2430/12C04B2235/3246C04B2235/5228C04B2235/5224
Inventor 王欣宇李智沈非孙文彬曲明月
Owner 佛山仙湖实验室
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