High-strength and low-rigidity porous titanium implant

Abstract

The invention provides a high-strength low-rigidity porous titanium implant. The porous titanium implant comprises threaded parts, a porous structural part, and a support structure part. The upper segment and the lower segment of the porous titanium implant are the threaded parts, porous structures are embedded in the middle segment and the tip end, and the support structure part is embedded in the middle segment porous structure to connect the upper threaded part with the lower threaded part. The porous titanium implant has sufficient compressive strength, and has a controllable elastic modulus similar to that of human skeletons, the contact position of the implant and bone tissues has a good stress environment, and the porous structures capable of promoting bone integration can improve the success rate of the dental implant.

Description

technical field [0001] The invention relates to the field of dental implants, in particular to a high-strength and low-rigidity porous titanium implant. Background technique [0002] Currently, implants are very common implants in dentistry to replace missing teeth. At present, the commonly used dental implant systems of internationally renowned brands (including Nobel, ITI in Switzerland, 3i in the United States, bego in Germany, etc.) all use pure titanium as dental implants, but there will be varying degrees of loosening and falling off in clinical applications. Implant failure problem. Long-term studies have found that the main reason for the failure of dental implants is the mismatch between the mechanical properties of the implant and the surrounding bone tissue. When the elastic modulus of the implant is quite different from that of the alveolar bone, the implant will bear most of the stress when subjected to force, and the surrounding bone will be gradually absorbe...

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Problems solved by technology

[0004] Such as Chinese invention, application number: 200580049687.7, application publication number CN 101193664A, adopts the bioadaptive porous body, although the implant of this porous structure can reduce the elastic modulus of the implant, but the compressive strength of this porous structure is only The dental implant is about 60MPa, and the dental implant is a pressure-bearing member. This single porous structure cannot guarantee the mechanical strength of the implant, which may cause the dental implant to fail after implantation.

[0005] In the prior art, although the use of porous metals is considered to reduce the elastic modulus of implants and promote osseointegration, there is no case of redesigning for the poor mechanical strength of porous metals

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