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Low-elastic-modulus titanium-zirconium dental implant material and preparation method thereof

A dental implant, titanium and zirconium technology, applied in the field of medical oral materials, can solve the problems of unguaranteed strength, low elastic modulus, high elastic modulus, etc., to avoid stress shielding effect, reduce elastic modulus, and good mechanical properties Effect

Inactive Publication Date: 2018-08-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although titanium and titanium alloys exhibit excellent performance in mechanical properties and corrosion resistance, traditional titanium alloys generally have a high elastic modulus, and the most widely used clinical Ti-6Al-4V alloys even contain toxic and side effects. Al, V elements
Although tantalum-zirconium alloy has excellent corrosion resistance and good biocompatibility, its low elastic modulus cannot guarantee its strength to meet the requirements of dental implant materials, and the price of tantalum is very expensive

Method used

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  • Low-elastic-modulus titanium-zirconium dental implant material and preparation method thereof
  • Low-elastic-modulus titanium-zirconium dental implant material and preparation method thereof
  • Low-elastic-modulus titanium-zirconium dental implant material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The mass ratio of zirconium to titanium in the low elastic modulus titanium-zirconium dental implant material is (3:17) to (7:13).

[0030] Wherein, the particle size of titanium powder in the low elastic modulus titanium-zirconium dental implant material is 1-22 μm, and the particle size of zirconium powder is 2-35 μm. The compressive strength of the low elastic modulus titanium zirconium dental implant material is 1292.8 to 1498.5 MPa, the elastic modulus is 21.8 to 22.8 GPa, and the relative density is 94.1% to 94.5%.

Embodiment 2

[0032] The method of low elastic modulus titanium-zirconium dental implant material described in Example 1 includes the following steps:

[0033] 1. According to the ratio of zirconium powder and titanium powder mass ratio of 3:17, weigh 15.0g zirconium powder and 85.0g titanium powder with a balance. The powder requires oxygen content less than 0.3% and carbon content less than 0.02%. The titanium-zirconium composite powder is obtained after powder ball milling.

[0034] 2. The titanium-zirconium composite powder obtained after ball milling is pressed and molded under a press. Each sample weighs 4.8 g and is formed under a pressure of 150 MPa, without edge or corner drop, and the surface of the compact is smooth.

[0035] 3. Place the pressed compact sample in a tungsten crucible, put it in a vacuum furnace for sintering, and pump the vacuum of the vacuum furnace to 10 -3 Pa. Then the temperature in the vacuum furnace was increased from room temperature to 800°C at a rate of 5°C / mi...

Embodiment 3

[0039] The method of low elastic modulus titanium-zirconium dental implant material described in Example 1 includes the following steps:

[0040] 1. According to the ratio of titanium powder and zirconium powder atomic ratio 1:3, weigh 25.0g zirconium powder and 75.0g titanium powder with a balance. The powder requires oxygen content less than 0.3% and carbon content less than 0.02%. The titanium-zirconium composite powder is obtained after powder ball milling.

[0041] 2. The titanium-zirconium composite powder obtained after ball milling is pressed and molded under a press. Each sample weighs 5.2 g and is formed under a pressure of 150 MPa without falling edges and corners, and the surface of the compact is smooth.

[0042] 3. Place the pressed compact sample in a tungsten crucible, put it in a vacuum furnace for sintering, and pump the vacuum of the vacuum furnace to 10 -3 Pa. Then the temperature in the vacuum furnace was increased from room temperature to 800°C at a rate of 5°C...

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Abstract

The invention relates to a low-elastic-modulus titanium-zirconium dental implant material and a preparation method thereof. The low-elastic-modulus titanium-zirconium dental implant material has needle-shaped and lamellar precipitated structures in the sintering and cooling processes, the structures are beneficial for titanium-zirconium alloy to obtain good mechanical property and biocompatibility. The preparation method comprises the following steps that titanium-zirconium powder is uniformly mixed according to a certain ratio, after pressing and forming are completed, in the protective atmosphere, the temperature is increased to 800 DEG C for heat preservation, finally vacuum sintering is carried out at 1200-1300 DEG C, and the low-elastic-modulus titanium-zirconium dental implant material is obtained. According to the low-elastic-modulus titanium-zirconium alloy, the relative density is 94.1%-94.5%, the compressive strength is changed within the range of 1292.8-1498.5 MPa, the elastic modulus is changed within the range of 21.8-22.8 GPa, the elasticity modulus is relatively low under the condition that the strength is guaranteed, the dental implant material is good in mechanicalcompatibility with an upper jaw bone and a lower jaw bone of a human body, and is good in biocompatibility with epithelium and fiber tissues of an oral cavity; and the preparation method is simple, and the dental implant material is an relatively ideal low-elastic-modulus dental implant material.

Description

Technical field [0001] The invention belongs to the field of medical oral materials in medical composite materials, and specifically relates to a low elastic modulus titanium zirconium 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 repairing the appearance and performance of tissues. This material needs to consider the issue of biocompatibility during the implantation process, and the mechanical compatibility requires the mechanical properties of the implanted material to be compatible with or match the human tissue. If the strength is too low, the material will break and lose its stability. If it is too high, it will cause damage to the surrounding tissues, making it difficult for the material implantation site to heal for a long time, which is the "stress shielding" effect. [0003] Dental implant ...

Claims

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Application Information

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IPC IPC(8): B22F5/00C22C14/00A61L27/06
CPCA61L27/06B22F5/00B22F2998/00B22F2998/10C22C14/00B22F2009/043B22F3/02B22F3/1007B22F2201/20
Inventor 阮建明王葆奇
Owner CENT SOUTH UNIV
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