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Zirconium-niobium-titanium dental implant material high in strength and low in elastic modulus and preparation method of zirconium-niobium-titanium dental implant material

A dental implant and low elastic modulus technology, which is applied in the field of medical oral materials, can solve the problems of limited application range of implant materials and high density of pure niobium, so as to avoid stress shielding effect, reduce segregation and coarse grains, The effect of the modulus of elasticity on ease

Inactive Publication Date: 2018-05-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies by Liu Qing et al. have shown that the density of pure niobium is relatively high, which limits the scope of use of implant materials.
At present, there is no clear zirconium niobium titanium implant material for dental use, and the existing preparation methods of zirconium niobium titanium implant material are casting and SPS sintering (rapid plasma sintering)

Method used

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  • Zirconium-niobium-titanium dental implant material high in strength and low in elastic modulus and preparation method of zirconium-niobium-titanium dental implant material
  • Zirconium-niobium-titanium dental implant material high in strength and low in elastic modulus and preparation method of zirconium-niobium-titanium dental implant material
  • Zirconium-niobium-titanium dental implant material high in strength and low in elastic modulus and preparation method of zirconium-niobium-titanium dental implant material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The atomic ratio of zirconium, niobium and titanium in the high-strength and low-elastic modulus zirconium-niobium-titanium dental implant material is (1:5:8) to (4:5:2).

[0034] Wherein, the particle size of the zirconium powder in the high-strength low-elastic modulus zirconium-niobium-titanium dental implant material is 1-14 μm, the particle size of the niobium powder is 1-25 μm, and the particle size of the titanium powder is 1-16 μm. The compressive strength of the high-strength and low-elastic modulus zirconium-niobium-titanium dental implant material is 1111-1280 MPa, the elastic modulus is 32-41 GPa, and the relative density is 90%-95%.

Embodiment 2

[0036] The method for the high-strength low-elastic modulus zirconium-niobium-titanium dental implant material described in embodiment 1 comprises the following steps:

[0037] 1. According to the ratio of zirconium powder, niobium powder and titanium powder atomic ratio of 5:8:6, weigh 46.973g zirconium powder, 78.288g niobium powder and 31.315g titanium powder with a balance. The oxygen content of the powder is required to be less than 0.1%, carbon The content is less than 0.03%. The zirconium-niobium-titanium composite powder is obtained by ball milling zirconium powder, niobium powder and titanium powder.

[0038] 2. The zirconium-niobium-titanium composite powder obtained after ball milling was pressed and formed under a press. Each sample weighed 6g and was formed under a pressure of 300MPa. There was no edge drop and corner drop, and the surface of the green compact was smooth.

[0039] 3. Place the compacted sample in a quartz crucible, put it in a vacuum furnace for s...

Embodiment 3

[0043] The method for the high strength specific elastic modulus zirconium niobium titanium dental implant material described in embodiment 1 comprises the following steps:

[0044] 1. According to the atomic ratio of zirconium powder, niobium powder and titanium powder of 3:8:9, weigh 29.941g of zirconium powder, 74.851g of niobium powder and 44.911g of titanium powder with a balance. The oxygen content of the powder is required to be less than 0.1%, carbon The content is less than 0.03%, and the tantalum-zirconium composite powder is obtained after ball milling the tantalum powder and the zirconium powder.

[0045] 2. The zirconium-niobium-titanium composite powder obtained after ball milling was pressed and formed under a press. Each sample weighed 5g and was formed under a pressure of 250MPa. There was no edge or corner loss, and the surface of the green compact was smooth.

[0046] 3. Place the compacted sample in a tungsten crucible, put it into a vacuum furnace for sint...

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Abstract

The invention relates to a zirconium-niobium-titanium dental implant material with high compressive strength and low elastic modulus at the same time and a preparation method of the zirconium-niobium-titanium dental implant material. In the sintering cooling process, the zirconium-niobium-titanium dental implant material is provided with lamellar and needle-like precipitation structures, and the structures facilitate that a zirconium-niobium-titanium alloy acquires good mechanical properties and biological compatibility. The preparation method of the zirconium-niobium-titanium dental implant material includes the following steps that zirconium-niobium-titanium powder is mixed uniformly according to a certain proportion, and pressing and forming are performed in a powder metallurgy method;in the protecting atmosphere, temperature rises to 950 DEG C for heat preserving; and finally, vacuum sintering is performed at 1400-1600 DEG C, and the dental implant material high in comprehensive performance is obtained. According to the zirconium-niobium-titanium alloy, the relative density is 90% or above, the comprehensive strength changes in the range of 1100-1289 MPa, the elastic modulus changes in the range of 32-41 GPa, the elastic modulus is low under the condition that the strength is guaranteed, the mechanical compatibility with human body maxillary and mandible is good, and the biological compatibility with oral epithelia and fibrous tissue is good; and the preparation method is simple, and the dental implant material is ideal.

Description

technical field [0001] The invention belongs to the technical field of medical oral cavity materials in medical composite materials, and in particular relates to a high-strength and low elastic modulus zirconium-niobium-titanium dental implant material and a preparation method thereof. Background technique [0002] Biomedical composite materials in biomaterials are mainly used to replace damaged or missing human tissue structures to achieve the purpose of restoring tissue shape and performance. During the implantation process of this material, the issue of biocompatibility needs to be considered, and the mechanical compatibility requires that the mechanical properties of the implanted material be adapted or matched with human tissues. If the strength is too low, the material will be fractured and unstable, and if it is too high, it will cause damage to the surrounding tissue, making it difficult for the implanted site to heal for a long time, that is, the "stress shielding" ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C30/00
CPCC22C1/045C22C27/02C22C30/00
Inventor 阮建明张桃梅
Owner CENT SOUTH UNIV
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