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Method for preparing implant surface with multi-scale complex porous structure

A complex structure and implant technology, which is applied in the field of medical material manufacturing, can solve problems such as unsatisfactory implant results and implant failure, and achieve the effects of shortening the course of implant repair, high osteogenic activity, and improving the success rate of implant

Active Publication Date: 2014-12-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, implant surgery has achieved great success in oral clinical practice, but the unsatisfactory implant effect or even implant failure caused by insufficient osseointegration and bacterial infection is still a problem that plagues clinical implantology.

Method used

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  • Method for preparing implant surface with multi-scale complex porous structure
  • Method for preparing implant surface with multi-scale complex porous structure
  • Method for preparing implant surface with multi-scale complex porous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The implants with a smooth surface were sprayed evenly with 40-60 mesh emery under a pressure of 5 bar for 1 minute, and the sprayed implants were ultrasonically cleaned with acetone, ethanol and pure water for 15 minutes, and dried with nitrogen. Obtain large fluctuations of tens to tens of microns.

[0022] The dried implants were placed in the oxalic acid solution of 60g oxalic acid / 100ml water, in a boiling water bath for 60 minutes, and quickly washed with boiling distilled water, and micron pits were acid-etched on the tens of micron fluctuations obtained by sandblasting. On the side wall and the bottom wall of the micron-scale junction, a pit structure with a smaller scale of micron-scale and sub-micron-scale is further formed by acid etching. Oxalic acid treatment enhances the three-dimensional sense of the surface and greatly increases the surface area.

[0023] The implants treated with oxalic acid were treated with 1% NaOH at 80°C for 5 min, rinsed with a la...

Embodiment 2

[0025] The implants with a smooth surface were sprayed evenly with 40-60 mesh emery under a pressure of 5 bar for 1 minute, and the sprayed implants were ultrasonically cleaned with acetone, ethanol and pure water for 15 minutes, and dried with nitrogen. Obtain large fluctuations of tens to tens of microns.

[0026] The dried implants were placed in the oxalic acid solution of 60g oxalic acid / 100ml water, in a boiling water bath for 60 minutes, and quickly washed with boiling distilled water, and micron pits were acid-etched on the tens of micron fluctuations obtained by sandblasting. On the side wall and the bottom wall of the micron-scale junction, a pit structure with a smaller scale of micron-scale and sub-micron-scale is further formed by acid etching. Oxalic acid treatment enhances the three-dimensional sense of the surface and greatly increases the surface area.

[0027] The implants treated with oxalic acid were treated with 1% NaOH at 80°C for 10 min, rinsed with a l...

Embodiment 3

[0029] The implants with a smooth surface were sprayed evenly with 40-60 mesh emery under a pressure of 5 bar for 1 minute, and the sprayed implants were ultrasonically cleaned with acetone, ethanol and pure water for 15 minutes, and dried with nitrogen. Obtain large fluctuations of tens to tens of microns.

[0030] The dried implants were placed in the oxalic acid solution of 60g oxalic acid / 100ml water, in a boiling water bath for 60 minutes, and quickly washed with boiling distilled water, and micron pits were acid-etched on the tens of micron fluctuations obtained by sandblasting. On the side wall and the bottom wall of the micron-scale junction, a pit structure with a smaller scale of micron-scale and sub-micron-scale is further formed by acid etching. Oxalic acid treatment enhances the three-dimensional sense of the surface and greatly increases the surface area.

[0031] The implants treated with oxalic acid were treated with 1% NaOH at 80°C for 20 min, rinsed with a l...

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Abstract

The invention provides a method for preparing an implant surface with a multi-scale complex porous structure and for preparing a titanium-based implant surface with antibacterial and osteogenic functions. The method adopts a three-step reduction method of sand blasting, oxalic-acid acid etching and alkali treatment and simulates a morphology environment for new bone formation in vivo under the physiological condition. The osseointegration of the implant surface can be accelerated, the surface is beneficial to the long-term stability of the implant, has a significant antibacterial performance, can inhibit infection of early planting, and can further improve the success rate of planting. With adoption of the method, a micro-nano composite pure titanium implant surface with the osteogenic and antibacterial performances, namely a three-dimensional implant surface with the multi-scale complex structure is prepared. The surface has an osteogenic activity higher than that of SLA most widely used in clinic and good antibacterial performance and has a wide application prospect. The surface has the extremely vital significance on expanding oral planting indications, shortening the implant restoration course, reducing infections relative to planting and increasing the success rate of planting.

Description

technical field [0001] The invention belongs to the technical field of medical material manufacturing, and relates to a method for preparing a dental implant surface with multi-scale porous complex structure and antibacterial and antibacterial functions. technical background [0002] Since Branemark put forward the theory of osseointegration in the 1980s, the theory of osseointegration has been widely accepted by domestic and foreign scholars and applied in clinical practice. The formation of osseointegration (osseointegration) between the implant and the surrounding bone tissue is the key to the success of the implant. Implant surface properties play an important role in affecting the morphology and behavior of cells around the implant, and are one of the key factors determining the speed and degree of osseointegration. In recent years, on the basis of related studies on osseointegration theory, scholars have proposed the idea that after implantation of rough surface impla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00C23F1/26C23F1/38C22F1/18A61L27/06A61L27/56
Inventor 李晓东罗巧洁查光玉
Owner ZHEJIANG UNIV
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