Gradient porous implant with drug carrying function

A gradient porous, implant technology, applied in dental implants, prostheses, medical science, etc., can solve the problem that the mechanical properties cannot meet the high-frequency and high-strength force requirements of the oral environment, the elastic modulus does not match, and the healing time is shortened, etc. problem, achieve the effect of promoting early adhesion and osteogenic differentiation, reducing elastic modulus, and reducing stress shielding phenomenon

Inactive Publication Date: 2017-11-24
上海微云实业集团有限公司
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Problems solved by technology

[0004] Aiming at the deficiencies of medical titanium alloys, to solve the problem of elastic modulus mismatch between dental implants and bones, and to enhance the stability between implants and bones, accelerate osseointegration, and shorten healing time, the researchers proposed the use of porosity And with drug-coate

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  • Gradient porous implant with drug carrying function

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[0018] In order to deepen the understanding of the present invention, the present invention will be described in further detail below in conjunction with embodiments. The present embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0019] Such as figure 1 As shown, this embodiment provides a gradient porous implant with a drug-carrying function. The implant includes a dense core 1, a transition layer 2, and a porous layer 3. The implant is a dense core from the inside to the outside. Body 1, transition layer 2, and porous layer 3 having interconnected pore structures. The size of the pores in the porous layer 3 is maintained at 200-500 µm, the cross-sectional shape of the pores is a regular rhombus that is beneficial to the growth of bone tissue, the pore size is greater than 300 μm, the porosity is 80%, the pores are spirally distributed, and three types of pores are set respectively. T...

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Abstract

The invention discloses a gradient porous implant with drug carrying function. The implant comprises a compact core, a transition layer and a porous layer with an interconnected pore structure from the inside out in order. The implant is composed of the compact core, the transition layer and the porous layer, the porous layer is equipped with normal diamond shaped holes, the compact core is used for ensuring the strength requirements of the implant, the outermost porous layer is conducive to biological tissue ingrowth and improvement of mechanical fixation effect. The dental implant provided by the invention has the advantages of simple structure, scientific and reliable design, simple processing and making, good bone induction and osseointegration performance, and can effectively solve the poor biomechanical adaptation and other problems of existing titanium alloy dental implants.

Description

technical field [0001] The invention relates to the technical field of dental implant restoration, in particular to a gradient porous implant with drug carrying function. Background technique [0002] Dental implants currently used clinically do not match the mechanical properties of the surrounding bone tissue, which will cause stress shielding at the implant-bone interface, easily cause bone resorption, and affect the long-term effect of osseointegration. Therefore, it is necessary to reduce the elastic modulus of the dental implant so that it can match the bone tissue. [0003] Not only that, the surface of commercial pure titanium dental implants has only been sandblasted and acid-etched. Although it has good biocompatibility, it has no biological activity. After the first-stage implant surgery, the bone tissue between the implant and the alveolar bone grows slowly, and it takes 3-6 months for the second-stage repair surgery, and patients with poor bone conditions need ...

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Application Information

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IPC IPC(8): A61C8/00A61L27/32A61L27/56A61L27/06A61L27/54
CPCA61C8/0012A61C8/0013A61C8/0018A61C8/0093A61L27/06A61L27/32A61L27/54A61L27/56A61L2300/252A61L2300/414A61L2430/12
Inventor 刘大鹏
Owner 上海微云实业集团有限公司
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