NiTi memory alloy gradient porous personalized dental implant and manufacturing method thereof

Abstract

The invention discloses a NiTi memory alloy gradient porous personalized dental implant and a manufacturing method thereof. The method comprises the following steps: carrying out grid adjustment and curved surface fitting on acquired diseased tooth data, so as to obtain a relatively smooth diseased tooth model; and separating a dental crown part from a dental root part by virtue of a cut plane, and designing a base station at the top of the dental root of the dental implant according to a required retention force, wherein gradient porous structures are distributed at the dental root part, thedental root is manufactured from NiTi memory alloy with a memory effect through 3D printing and has the memory effect after being trained. The dental root generates phase change at a body temperaturephase-transition temperature point and is deformed, the base station at the dental root and an implanted part at the bottom of the dental root have self-swelling effects, so that a gum is automatically filled with the dental root, and the dental root has a pre-tightening force. BBC porous structures and negative poisson ratio porous structures are distributed at the dental implant and can generatetransverse deformation deference during the phase change, and the discontinuous deformation is generated at the bottom of a dental implant body so as to form a thread-similar structure, so that the contact area is increased, a fixation effect is achieved, and the dental implant is unlikely to be loosened.

Description

technical field [0001] The invention belongs to the technical field of dental implants, and relates to a NiTi memory alloy gradient porous personalized dental implant and a manufacturing method. Background technique [0002] The so-called 4D printing technology is to add the "time" element to the concept of traditional 3D printing, and the printed object can self-adjust in shape over time. This technology does not even need a printing machine, it can directly make the material rapid prototyping, which can be called a revolutionary technology. 4D printing technology will be applied to furniture, bicycles, cars and even medical fields. [0003] Due to its shape memory effect and superelastic behavior, NiTi memory alloy has been widely used in biomedicine, aerospace, intelligent robots and other fields. Selective melting 3D printing NiTi memory alloy dental implants with memory effect has formed a new 4D dental implant technology. [0004] Due to its shape memory effect and ...

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Problems solved by technology

[0005] However, a uniform porous structure cannot match the mechanical requirements of dental implants. The bone of the tooth presents a distribution of gradient pore sizes, which is conducive to force transmission and energy absorption.

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