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Superfine crystal pure titanium oral micro-implant and preparation method thereof

A technology of ultra-fine-grained pure titanium and micro-implantation, which is applied in prosthetics, dental implants, and medical science, can solve the problems of low osseointegration strength of micro-implants, reduce the risk of fracture, increase the osseointegration area, The effect of increasing strength

Active Publication Date: 2017-01-18
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using ultra-fine-grained pure titanium materials to make micro-implants improves the mechanical strength of micro-implants, but still needs to solve the problem of low osseointegration strength of micro-implants

Method used

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  • Superfine crystal pure titanium oral micro-implant and preparation method thereof
  • Superfine crystal pure titanium oral micro-implant and preparation method thereof
  • Superfine crystal pure titanium oral micro-implant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step A) Establish a parametric model of the thread height and thread distance of the micro-implant with a diameter of 2.5 mm and a length of 10 mm in the inner bone segment, and use ANSYS Workbench 15.0 software to perform bivariate optimization of the thread height and thread distance. The objective function is implant The contact area between body and bone tissue and the maximum equivalent stress of bone tissue. Select the optimal parameters of ANSYS WorkbenchDesignXplorer, the thread height is 0.3mm, and the thread distance is 0.67mm. After thread optimization, the osseointegration area of ​​the implant increases by 18%, the maximum equivalent stress of cortical bone decreases by 13.8%, and the maximum equivalent stress of cancellous bone decreases by 7.8% %.

[0036] Step B) Use the equal channel extrusion method to prepare ultra-fine-grained pure titanium, the inner angle of the extrusion mold is 120°, and the outer angle is 20°; at room temperature, carry out 4 pa...

Embodiment 2

[0041] Step A) Establish a parametric model of the thread height and thread distance of the micro-implant with a diameter of 3.0 mm and a length of the inner bone segment of 10 mm. Use ANSYS Workbench 15.0 software to perform bivariate optimization of the thread height and thread distance. The objective function is implant The contact area between body and bone tissue and the maximum equivalent stress of bone tissue. Select the optimal parameters of ANSYS WorkbenchDesignXplorer, the thread height is 0.35mm, and the thread distance is 0.72mm. After thread optimization, the osseointegration area of ​​the implant increases by 23%, the maximum equivalent stress of cortical bone decreases by 15.4%, and the maximum equivalent stress of cancellous bone decreases by 7.1% %.

[0042] Step B) Use the equal channel extrusion method to prepare ultra-fine-grained pure titanium, the inner angle of the extrusion mold is 120°, and the outer angle is 20°; at room temperature, carry out 4 passe...

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Abstract

The invention discloses a superfine crystal pure titanium oral micro-implant and a preparation method thereof, belongs to the field of oral implants, specifically to the superfine crystal pure titanium oral micro-implant, and is used for solving the problem that the existing pure titanium micro-implant is low in strength and small in bone bonding area. The micro-implant is prepared from superfine crystal pure titanium, and the diameter is 2.5 to 3.0 mm; an in-bone part of the micro-implant is provided with screw threads of which the surfaces are subjected to roughening treatment; the neck part of the micro-implant is a smooth surface, and the bottom of the micro-implant is an arc surface. The micro-implant is manufactured by using a high-strength superfine crystal pure titanium material, and the shape of the screw threads on the surface of the micro-implant is optimized, so that the stress is reduced, and meanwhile, the bone bonding area is increased. According to the superfine crystal pure titanium oral micro-implant and the preparation method thereof, the strength of the micro-implant can be effectively improved, the bone bonding area can be effectively increased, the fracture risk of the micro-implant can be reduced, and the service life of the micro-plant can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of oral medical materials, and relates to a micro-implant, in particular to an ultra-fine crystal pure titanium oral micro-implant and a preparation method thereof. Background technique [0002] Dental defect and loss will affect the normal function of the oral and maxillary system, resulting in patients with slurred pronunciation, decreased masticatory function, facial deformities and gastrointestinal diseases, which will have a great impact on the patient's body and mind. The epidemiological survey of oral health in my country shows that the average number of teeth lost in the 65-74 age group is 9.86, and that in the 35-44 age group is 0.88. The survey data show that there is a huge clinical demand for tooth defects and missing restorations in my country. Implant dentures can significantly improve masticatory function, have a comfortable feeling similar to real teeth, and do not damage adjacent teeth, and...

Claims

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Application Information

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IPC IPC(8): A61C8/00A61L27/06A61L27/50
CPCA61C8/0012A61C8/0022A61C8/0025A61L27/06A61L27/50A61L2430/12
Inventor 辛海涛吴玉禄安佰利丰帆刁晓鸥窦晨云
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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