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Method for preparing functionally-graded dental implant by metal 3D printing

A functionally gradient and dental implant technology, which is applied in dentistry, dental implants, dental restorations, etc., can solve problems such as leakage, looseness, and poor mechanical bonding, and achieve stress shielding effects, high strength requirements, and overcoming poor contact. The effect of fastness and fretting wear

Inactive Publication Date: 2018-12-04
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a method for preparing functionally graded dental implants by metal 3D printing. By integrally forming the tooth root and abutment, it solves the problems caused by fretting wear and loosening caused by weak mechanical bonding. Give way

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  • Method for preparing functionally-graded dental implant by metal 3D printing
  • Method for preparing functionally-graded dental implant by metal 3D printing
  • Method for preparing functionally-graded dental implant by metal 3D printing

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Embodiment Construction

[0021] In this embodiment, the basic three-dimensional shape data of the dental implant body is obtained first by using medical imaging technology, and the three-dimensional shape data of the abutment are added to reconstruct a complete three-dimensional model of the dental implant.

[0022] The Ti6Al4V and β titanium alloy powders used in this example have an average particle size of 100 μm, wherein the titanium alloys are respectively Ti6Al4V and the promising β titanium alloy-"rubber metal" TNTZO, namely Ti-39Nb-3Ta-2Zr-0.35Owt. % alloy powder. Before manufacturing, the powder is baked in a vacuum heating oven for about 1 hour to remove the moisture contained in the powder to improve the fluidity of the powder.

[0023] Such as figure 2 As shown, the specific steps of this embodiment are as follows: according to the set printing program, the selected laser power is 900W, the spot diameter is 1mm, and the energy size is Gaussian distribution; the scanning speed of the lase...

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Abstract

A method for preparing a functionally-graded dental implant by metal 3D printing is characterized in that a tooth root made from a functionally graded material and an abutment part made from a singlematerial are sequentially printed by a laser melting precipitation (LMP) technology based on a three-dimensional model of the dental implant. The integral molding of the tooth root and the abutment solves fretting wear caused by poor mechanical combination and micro-leakage caused by loosening; and the stress shielding phenomenon caused by the high modulus of traditional Ti6Al4V alloy tooth rootsand release of toxic elements Al and V are effectively alleviated, and the integration of the tooth root and the abutment can effectively guarantee the mechanical stability and the biomechanical stability of the root-abutment combination.

Description

technical field [0001] The invention relates to a technology in the field of medical devices, in particular to a method for preparing a functionally graded dental implant by metal 3D printing. Background technique [0002] Dental implants are fixed on the jawbone from the inside out in a specific way, and depending on their service, the required performance of the part implanted in the jawbone and the part outside the jawbone is different. The inner part should have good osteogenicity, non-toxicity and elastic modulus matching natural bone, and the outer part should have sufficient mechanical strength to withstand the occlusal force. At present, implants and abutments are clinically combined through mechanical connections. When the superstructure of the implant undergoes fretting under the long-term action of the occlusal force, a micro-gap is generated between the implant and the abutment, which leads to Microleakage increases the risk of soft tissue inflammation. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C8/00B33Y10/00B33Y50/00B33Y70/00B33Y80/00
CPCA61C8/0012B33Y10/00B33Y50/00B33Y70/00B33Y80/00
Inventor 董安平许浩邢辉疏达孙宝德祝国梁胡植林逸凌
Owner SHANGHAI JIAO TONG UNIV
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