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Dental zirconia all-ceramic material and preparation method thereof

A zirconia and dental technology, which is applied in the field of dental zirconia all-ceramic materials and its preparation, can solve the problems of poor mechanical properties, excessive zirconia grain growth size, and bubbles in zirconia powder, and achieve excellent mechanical properties. Effect of properties and porosity

Inactive Publication Date: 2019-08-02
南京赛诺特斯材料科技有限公司
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Problems solved by technology

[0008] However, the above-mentioned patent does not eliminate the impact of the particle size of the zirconia grains in the prior art on the prepared all-ceramic material: due to the excessive size of the zirconia grains, it is easy to cause the growth size of the zirconia grains If the particle size of zirconia is too small, the zirconia powder is prone to agglomeration and bubbles remain, which will lead to internal defects in the molded product. make its mechanical properties poorer

Method used

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Embodiment approach

[0030] According to a preferred embodiment, the dental zirconia all-ceramic material is composed of the following components: ceramic powder, pore former, binder, stabilizer, and auxiliary agent, wherein the ceramic powder accounts for all the components The mass parts of the raw materials are 45-75%, the pore-forming agent accounts for 10-20% of the mass parts of all component raw materials, and the binder accounts for 6-12% of the mass parts of all component raw materials. , The stabilizer accounts for 10-30% by mass of all component raw materials, the auxiliary agent accounts for 5-20% by mass of all component raw materials, and the mass of each component in the component raw materials The sum of the copies is 100%.

[0031] According to a preferred embodiment, the auxiliary agent at least includes a dispersing agent, a coloring agent, and a bacteriostatic agent separately arranged in a certain proportion. Wherein, the mass percentage of the dispersant is 3-10%, the mass perc...

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Abstract

The invention relates to a preparation method of a dental zirconia all-ceramic material. The dental zirconia all-ceramic material is prepared with a preparation method comprising steps as follows: accurately weighing raw materials including ceramic powder, a pore forming material, a binder, a stabilizer and an auxiliary for preparing the dental zirconia all-ceramic material in a certain ratio; performing mixed ball milling or sanding on the ceramic powder, the stabilizer and at least part of the auxiliary in the presence of a certain quantity of a solvent or under the solvent-free condition toobtain material powder, adding the pore forming material, the binder and the remaining auxiliary to the material powder under the heating or cooling condition respectively to obtain a material suspension, and placing the material suspension in a die for cooling and drying to obtain the dental zirconia all-ceramic material.

Description

Technical field [0001] The invention relates to the technical field of dental materials, in particular to a dental zirconia all-ceramic material and a preparation method thereof. Background technique [0002] All-ceramic restoration technology has become an ideal choice for oral materials due to its good biocompatibility and superior aesthetic effects. In all-ceramic material systems, the mechanical properties of zirconia ceramics such as strength and toughness are significantly better than other materials. It is currently the focus of attention and research on dental materials, and it occupies an important position in oxide ceramics. Zirconia ceramic material can solve the problems of insufficient strength and toughness of conventional all-ceramic materials, and it is a kind of biologically inert ceramic material, which has been widely used in the field of biomedicine. [0003] Zirconia bioceramics is a nearly inert bioceramic composed of high-purity zirconia, which is prepared b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B35/63C04B35/632C04B38/02C04B38/06
CPCC04B35/48C04B35/622C04B35/6303C04B35/632C04B38/02C04B38/067C04B2235/3206C04B2235/3217C04B2235/3224C04B2235/3225C04B2235/3227C04B2235/3272C04B2235/3279C04B2235/3298C04B2235/3418C04B2235/3427C04B2235/5436C04B2235/5445C04B2235/9661
Inventor 孔令兵张天舒刘银董强
Owner 南京赛诺特斯材料科技有限公司
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