3D printed fang implant with multisection structure

Abstract

The invention relates to a 3D printed fang implant with a multisection structure. The fang implant is primarily formed by means of a 3D laser melting method. The implant comprises a lower threaded section, a middle body section and an upper threaded section, wherein the middle body section comprises a solid cylinder and a honeycomb shell structure wrapping the cylindrical surface of the solid cylinder. As the honeycomb shell structure is adopted, the elastic modulus of the implant is reduced effectively, so that stress concentration and stress shield generated to tissue interface of a strong skeleton which is implanted are reduced, the implanting compatibility is improved, a channel is provided for later surface treatment, a good space is provided for bone cell proliferation, and the implant is stable in structure and uniform to stress, and avoids fatigue breakage after long-term use as a result of local stress concentration, and therefore, the service life of the implant is prolongedby three times. As a design of different threaded sections is adopted, the cutting performance and the bone grabbing performance of the implant are improved. The implant has a self-locking effect, sothat the implant stability is improved. By means of integrated printed forming, the processing course is saved, and the cost is lowered.

Description

technical field [0001] The invention relates to a 3D printed tooth root implant with a multi-segment structure applied in the field of oral medicine. Background technique [0002] Titanium alloys have been widely used in the field of oral implants because of their good biocompatibility, excellent mechanical properties and corrosion resistance. At present, titanium alloy dental implants are mostly single root bodies with threaded and columnar structures formed by processing titanium rods. The titanium alloy root implant produced by this method has high manufacturing costs and strict quality requirements for process control. At the same time, its elastic modulus is more than ten times that of natural bone, which will cause stress concentration and damage to the bone tissue interface after implantation. Stress shielding and poor mechanical compatibility will affect the success rate of implantation and long-term life. [0003] Selective laser melting (SLM) 3D printing technolo...

AI Technical Summary

Problems solved by technology

The titanium alloy root implant produced by this method has high manufacturing costs and strict quality requirements for process control. At the same time, its elastic modulus is more than ten times that of natural bone, which will cause stress concentration and damage to the bone tissue interface after implantation. Stress shielding and poor mechanical compatibility will affect the success rate of implantation and long-term life

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