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Porous oral implant and preparation method thereof

A technology of oral implants and implants, applied in prosthetics, medical science, tissue regeneration, etc., can solve the problems of difficult to meet clinical needs and low compressive strength, achieve good comprehensive mechanical properties and improve compressive strength Effect

Inactive Publication Date: 2020-03-17
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compressive strength of porous TTNZ implants is lower than that of human bones and teeth, and it is difficult to meet the needs of clinical use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Set the laser selection melting process parameters, the laser power for scanning the entity is 350W, the laser power for scanning the contour is 200W, the laser power for scanning the support is 350W, the diameter of the spot is 70μm, the scanning speed of the entity is 2500mm / s, the scanning speed of the contour is 450mm / s, and the scanning speed of the support 2500mm / s, the scanning distance is 0.07 for laser selective melting, and the 3D printing of porous implant components is completed. The particle size range of the alloy powder used is 15-53μm; , the oxygen content in the chamber is lower than 100ppm and the pressure is maintained at 10-40mbar; the powder coating thickness is 0.055mm.

[0033] The vacuum heat treatment furnace equipment adopts the combination of vacuuming and replacement. First, the vacuum is evacuated to 10Pa, and then high-purity Ar gas is filled into the molding chamber, and the replacement is repeated several times until the vacuum reaches 1Pa...

Embodiment 2

[0038] Set the laser selection melting process parameters, the laser power for scanning the entity is 350W, the laser power for scanning the contour is 200W, the laser power for scanning the support is 350W, the diameter of the spot is 70μm, the scanning speed of the entity is 2500mm / s, the scanning speed of the contour is 450mm / s, and the scanning speed of the support 2500mm / s, the scanning distance is 0.07 for laser selective melting, and the 3D printing of porous implant components is completed. The particle size range of the alloy powder used is 15-53μm; , the oxygen content in the chamber is lower than 100ppm and the pressure is maintained at 10-40mbar; the powder coating thickness is 0.055mm.

[0039] The vacuum heat treatment furnace equipment adopts the combination of vacuuming and replacement. First, the vacuum is evacuated to 10Pa, and then high-purity Ar gas is filled into the molding chamber, and the replacement is repeated several times until the vacuum reaches 1Pa...

Embodiment 3

[0044] Set the laser selection melting process parameters, the laser power for scanning the entity is 350W, the laser power for scanning the contour is 200W, the laser power for scanning the support is 350W, the diameter of the spot is 70μm, the scanning speed of the entity is 2500mm / s, the scanning speed of the contour is 450mm / s, and the scanning speed of the support 2500mm / s, the scanning distance is 0.07 for laser selective melting, and the 3D printing of porous implant components is completed. The particle size range of the alloy powder used is 15-53μm; The indoor oxygen content is lower than 100ppm and the pressure is maintained at 10-40mbar; the thickness of powder spreading is 0.055mm.

[0045] The vacuum heat treatment furnace equipment adopts the combination of vacuuming and replacement. First, the vacuum is evacuated to 10Pa, and then high-purity Ar gas is filled into the molding chamber, and the replacement is repeated several times until the vacuum reaches 1Pa.

...

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Abstract

The invention provides a preparation method of a porous oral implant. The preparation method comprises the following steps: preparing alloy powder into the porous implant through a selective laser melting process; and carrying out vacuum heat treatment on the porous implant and then carrying out furnace cooling to obtain the porous oral implant. By adopting a specific heat treatment process, particularly aiming at a TTNZ alloy porous material prepared by 3D printing of specific components, the compressive strength of the material can be greatly improved, so that the mechanical property of theTTNZ porous oral implant meets the clinical use requirements. The compression strength of the TTNZ porous oral implant prepared by the method is 269-320 MPa, the elastic modulus of the TTNZ porous oral implant is 10-20 GPa, and the implant has good comprehensive mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of medical implant materials, in particular to a porous oral implant and a preparation method thereof. Background technique [0002] At present, the vast majority of commercial implants on the market are made of pure titanium (Ti) or TC4 (Ti6Al4V), although Ti and Ti6Al4V have good biocompatibility, but those with high elastic modulus and cytotoxic elements Al and V are still the main problem for these two materials at present. In order to solve the above problems, scholars have done a lot of research on the surface modification of Ti or Ti6Al4V implants. However, these methods failed to change the composition of elements and could not essentially solve the defects of Ti or Ti6Al4V. Therefore, the new titanium alloy TNTZ alloy with low elastic modulus, non-toxicity and high biocompatibility is applied to oral implants. [0003] Since the elastic modulus of human implants cannot completely match the elastic...

Claims

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Application Information

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IPC IPC(8): A61L27/04A61L27/56B33Y10/00B33Y80/00
CPCA61L27/042A61L27/56A61L2430/12B33Y10/00B33Y80/00
Inventor 谢晓莉罗骏思戴煜吴振寰李礼
Owner CENT SOUTH UNIV
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