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Surface modification treatment method for titanium metal implant material

A technology for surface modification and implantation of materials, applied in the direction of metal material coating process, etc., can solve the problems of reducing the surface mechanical strength, insufficient osteoinductive activity of titanium implant materials, falling off, etc., to improve the osteoinductive activity of titanium metal. Effect

Pending Publication Date: 2022-01-28
THE STOMATOLOGIAL HOSPITAL OF ZHEJIANG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In fact, the main hidden dangers of these titanium surface modification methods are the following two points: one is to increase the interface between the titanium substrate and the surface, which may reduce the mechanical strength of the surface, and titanium metal implants are mostly used for hard tissues. site, it is easy to cause shedding after long-term clinical use; the other is the lack of osteoinductive activity of titanium implant materials

Method used

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  • Surface modification treatment method for titanium metal implant material
  • Surface modification treatment method for titanium metal implant material
  • Surface modification treatment method for titanium metal implant material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Grind and polish the surface of the titanium metal sheet with a size of 1cm*1cm*0.1cm with 200-4000 mesh sandpaper to expose the fresh surface, then clean it with deionized water in ultrasonic for 60 minutes, take it out and rinse it; 2. 1) The treated titanium metal sheet is placed in liquid nitrogen and cooled for 30 minutes.

[0033] 3. Place the titanium metal sheet treated in step 2) in a mixed solution of sulfuric acid, hydrofluoric acid, and nitric acid (molar ratio 1:1:2) for pre-oxidation, and treat it in an ice bath for 15 minutes.

[0034] 4. Place the titanium metal sheet treated in step 3) in an argon atmosphere for heat treatment, take it out after heat treatment at 300° C. for 60 minutes, rinse with deionized water, and dry.

[0035] 5. Put the titanium metal sheet treated in step 4) in 5 g of sodium borohydride powder (both the upper and lower surfaces are covered), heat-treat at 350° C. for 30 min under an argon atmosphere, take it out, rinse with de...

Embodiment 2

[0042]1. Grind and polish the surface of the titanium metal sheet with a size of 1cm*1cm*0.1cm with 200-4000 mesh sandpaper to expose the fresh surface, then clean it with deionized water in ultrasonic for 60 minutes, take it out and rinse it; 2. 1) The treated titanium metal sheet is placed in liquid nitrogen and cooled for 60 minutes.

[0043] 3. Place the titanium metal sheet treated in step 2) in a mixed solution of sulfuric acid and nitric acid (molar ratio 1:1) for pre-oxidation, and treat it in an ice bath for 15 minutes.

[0044] 4. Place the titanium metal sheet treated in step 3) in a nitrogen atmosphere for heat treatment, take it out after heat treatment at 300° C. for 60 minutes, rinse with deionized water, and dry.

[0045] 5. Put the titanium metal sheet treated in step 4) in 10 g of potassium borohydride powder (both upper and lower surfaces are covered), under nitrogen atmosphere protection, heat-treat at 50°C for 300 min, take it out, rinse with deionized wat...

Embodiment 3

[0048] 1. Polish the surface of a titanium alloy (Ti-6Al-4V) metal sheet with a size of 1cm*1cm*0.1cm with 200-4000 mesh sandpaper to expose the fresh surface, then clean it with deionized water in ultrasonic for 60 minutes and take it out rinse off;

[0049] 2. Place the titanium metal sheet treated in step 1) in liquid nitrogen, and cool down for 30 minutes.

[0050] 3. Place the titanium metal sheet treated in step 2) in a mixed solution of sulfuric acid and hydrofluoric acid (molar ratio 1:2) for pre-oxidation, and treat it in an ice bath for 15 minutes.

[0051] 4. Place the titanium metal sheet treated in step 3) in an argon atmosphere for heat treatment, take it out after heat treatment at 300° C. for 60 minutes, rinse with deionized water, and dry.

[0052] 5. Put the titanium alloy metal sheet treated in step 4 in 10 g of potassium sulfite powder (both the upper and lower surfaces are covered), and heat-treat at 100°C for 180 minutes under hydrogen atmosphere protect...

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Abstract

The invention discloses a surface modification treatment method for a titanium metal implant material. According to the method, titanium metal is subjected to reduction treatment to obtain the surface characteristic rich in surface oxygen vacancies, so that the osseointegration capacity of the titanium metal and a matrix is promoted. According to the titanium metal surface rich in oxygen vacancies, the proportion of the oxygen vacancies is 5% to 40%. The prepared titanium metal rich in oxygen vacancies on the surface has the excellent capability of accelerating osseointegration of an implant and the matrix. The adopted treatment and preparation method is simple, high in controllability and suitable for industrial preparation and treatment of bone tissue repair titanium metal materials for biomedicine.

Description

technical field [0001] The invention belongs to the technical field of surface modification of hard tissue implant materials such as orthopedics and oral cavity, and in particular relates to a surface modification treatment method of titanium metal implant materials, which can effectively increase the concentration of oxygen vacancies on the surface of titanium metal. Background technique [0002] Due to its good biocompatibility, mechanical properties and corrosion resistance, titanium metal is widely used in orthopedics and oral surgery, especially as a dental implant has a huge market demand. With the increasingly widespread clinical application, how to properly modify the surface of titanium metal is beneficial to the attachment and growth of cells, especially osteoblasts, on its surface, and promotes its osseointegration performance. Research hotspots of clinical application efficiency. At present, the surface modification of titanium metal materials in clinical applic...

Claims

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Application Information

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IPC IPC(8): C23C22/54C22F1/18
CPCC23C22/54C22F1/183
Inventor 董灵庆
Owner THE STOMATOLOGIAL HOSPITAL OF ZHEJIANG UNIV SCHOOL OF MEDICINE
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