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Dental implant with porous thread structure

A technology for dental implants and porous bodies, which is used in dentistry, dental implants, dental prosthetics, etc., can solve the problems of affecting the long-term stability of the implants, the occlusal force cannot be uniformly transmitted, and the local stress of the implants is high, so as to eliminate the stress. Shielding phenomenon, improving implantation effect, enhancing implantation stability effect

Inactive Publication Date: 2018-03-13
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The elastic modulus of the implant is an important factor affecting the success rate of artificial dental implants. If the elastic modulus is too high, the occlusal force will not be evenly transmitted to the surrounding bone tissue of the implant, and even cause stress shielding, making the implant The local stress is too high which leads to implant failure
At present, compared with stainless steel, cobalt chromium molybdenum and other implant materials, the elastic modulus of commonly used pure titanium is greatly reduced, only about 110GPa, but it is still much higher than the elastic modulus of human bones (cortical bone is about 10GPa ~ 25GPa), It will still cause obvious stress shielding phenomenon, which will affect the long-term stability of the implant, and even cause the implant to fall off or fail

Method used

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  • Dental implant with porous thread structure
  • Dental implant with porous thread structure

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Experimental program
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Embodiment 1

[0024] Such as figure 1 As shown, the dental implant with porous thread structure in this embodiment is made of pure titanium, and includes a body 1, which is provided with a thread, and the thread is provided with an edge groove 2, and the edge groove 2 is a helical edge. Groove, the central position of the middle and upper part of the body 1 is provided with a conical bottom threaded hole 3, the body 1 is a porous body, the porosity of the porous body is 5%, and there are multiple micropores on the porous body, The diameter of the micropores is 200 μm, and some of the micropores are interconnected to form three-dimensional through holes, such as figure 2 As shown, the total volume of the three-dimensional through holes on the porous body is 30% of the total volume of the micropores on the porous body.

[0025] The dental implant with a porous thread structure in this embodiment is prepared by a laser selective melting method.

[0026] The dental implant implant with porou...

Embodiment 2

[0028] Such as figure 1 As shown, the dental implant with a porous thread structure in this embodiment is made of pure tantalum, and includes a body 1, which is provided with a thread, and the thread is provided with an edge groove 2, and the edge groove 2 is a helical edge. Groove, the central position of the middle and upper part of the body 1 is provided with a conical bottom threaded hole 3, the body 1 is a porous body, the porosity of the porous body is 20%, and the porous body has a plurality of micropores, The pore diameter of the micropores is 500 μm, some of the micropores in the plurality of micropores are interconnected to form three-dimensional through holes, and the total volume of the three-dimensional through holes on the porous body is 80% of the total volume of the micropores on the porous body .

[0029] The dental implant with a porous thread structure in this embodiment is prepared by a laser selective melting method.

[0030] The dental implant implant w...

Embodiment 3

[0032] Such as figure 1 As shown, the dental implant implant with porous thread structure in this embodiment is made of Ti6Al4V titanium alloy, and includes a body 1. The body 1 is provided with a thread, and the thread is provided with an edge groove 2, and the edge groove 2 is straight. The edge groove, the central position of the middle and upper part of the body 1 is provided with a conical bottom threaded hole 3, the body 1 is a porous body, the porosity of the porous body is 10%, and there are multiple micropores on the porous body , the pore diameter of the micropores is 350 μm, some of the micropores in the plurality of micropores communicate with each other to form three-dimensional through holes, and the total volume of the three-dimensional through holes on the porous body is 60% of the total volume of the micropores on the porous body %.

[0033] The dental implant with a porous thread structure in this embodiment is prepared by an electron beam selective melting ...

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Abstract

The invention discloses a dental implant with a porous thread structure. The dental implant comprises a body, wherein threads are arranged on the body, and an edge groove is formed in the threads; a conical-bottom thread hole is formed in the center of the middle upper part of the inside of the body, and the body is a porous body having a porosity of 5% to 20%. The body of the dental implant is designed into a porous structure, so that the elastic modulus of a part, in contact with a bone, of the implant is effectively reduced, thereby significantly reducing or eliminating a stress shielding phenomenon, solving the problem that the dental implant is loosened by the stress shielding phenomenon, enhancing the binding stability of the implant and the bone, inducing bone tissue to grow into pores of the implant so that the biological fixation is formed between the implant and the bone tissue, improving the implanting effect of the dental implant, and improving the service safety; meanwhile, the biomechanical properties of the implant and the part in contact with the bone are matched, the service life of the dental implant is prolonged, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of oral restorative treatment instruments, and in particular relates to a dental implant with a porous thread structure. Background technique [0002] Tooth loss is becoming one of the main diseases that endanger human health. WHO has listed dental caries, cardiovascular disease and cancer as one of the three major contemporary diseases that endanger human health. Dental caries is a typical oral disease. Disease can cause tooth loss. Due to improper hygiene habits and insufficient awareness of oral diseases, the per capita tooth loss rate in my country is much higher than that in developed countries such as Europe, America and Japan. According to incomplete statistics, there were more than 300 million edentulous patients in mainland my country in 2012, and there were more than 20 million edentulous patients; WHO's epidemiological research on the elderly showed that the majority of patients with oral disease...

Claims

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Application Information

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IPC IPC(8): A61C8/00
CPCA61C8/0012A61C8/0028A61C8/0037
Inventor 余森于振涛袁思波韩建业牛金龙
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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