NiTi memory personalized self-expansion thread groove embedded porous structure dental implant and preparation method thereof

Abstract

The invention discloses a NiTi memory personalized self-expansion thread groove embedded porous structure dental implant and a preparation method thereof. The preparation method mainly comprises the following steps: performing mesh adjustment and surface fitting on the obtained ill tooth data, to obtain a relatively smooth ill tooth model. The crown part is separated from the root part by a cutting plane, and a base station is designed at the root top of the dental implant according to the required retention force; thread groove embedded porous structures are distributed at the root bottom; and the root is 3D-printed from NiTi alloy with a memory effect, and has a round-trip effect after training. Phase change of the root at the phase-transition temperature point of human body temperatureleads to deformation; the entire dental implant has a self-expansion effect so that the root automatically fills up the gum and has pretightening force; and with the thread groove embedded porous structures, in the case of deformation, the deformation of the embedded porous structures exceeds the deformation of the dental implant, and the embedded porous structures extend out of the groove to forma thread-like structure; and thus, the contact area is increased, and a fixing effect is realized so that the dental implant does not get loose easily.

Description

technical field [0001] The invention belongs to the technical field of dental implants, and relates to a NiTi memory personalized self-expanding screw groove embedded porous structure 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 alloy has been widely used in biomedicine, aerospace, and intelligent robots. Selective melting 3D printing of NiTi alloy dental implants with memory effect forms a new 4D dental implant technology. [0004] Traditional dental implants gene...

AI Technical Summary

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.

Images