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Method for manufacturing dentures from polyetheretherketone/zirconium oxide composite materials

A composite material, polyether ether ketone technology, applied in medical science, tissue regeneration, prosthesis, etc., can solve the problems of natural tooth wear and polishing difficulty, and achieve the effect of increasing lifespan, reducing wear and high density

Inactive Publication Date: 2019-01-04
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This kind of denture not only solves the problem that polyether ether ketone dentures are difficult to polish due to the soft material, but also solves the problem of excessive wear on the opposite natural teeth due to the high hardness of zirconia dentures

Method used

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  • Method for manufacturing dentures from polyetheretherketone/zirconium oxide composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The polyether ether ketone / zirconia composite material with zirconia mass proportion of 1% is put into a twin-screw extruder to extrude the composite material wire at 360°C, and then the obtained wire is sheared and pulverized into granules. Use mimics software to perform 3D reconstruction of CT data, 3-matic software to make corresponding injection molds for the stl model, import the stl model into the Cura slicing software to set slice layer thickness, exposure time of each layer and other parameters, and add support if necessary . Finally, import the slice file into the 3D printer to print out an injection mold that can withstand high temperatures of 450°C. Put the obtained granular composite material into the silo of the injection molding machine, install and fix the obtained injection mold, and perform injection molding at an injection temperature of 380°C and a mold temperature of 120°C. The resulting injection-molded dentures were polished with special dental eq...

Embodiment 2

[0028] The polyether ether ketone / zirconia composite material with a mass ratio of zirconia of 10% was put into a twin-screw extruder to extrude composite material filaments at 370° C., and then the obtained filaments were sheared and pulverized into granules. Use mimics software to perform 3D reconstruction of CT data, 3-matic software to make corresponding injection molds for the stl model, import the stl model into the Cura slicing software to set slice layer thickness, exposure time of each layer and other parameters, and add support if necessary . Finally, import the slice file into the 3D printer to print out an injection mold that can withstand high temperatures of 450°C. Put the obtained granular composite material into the silo of the injection molding machine, install and fix the obtained injection mold, and perform injection molding at an injection temperature of 410° C. and a mold temperature of 250° C. The resulting injection-molded dentures were polished with sp...

Embodiment 3

[0030] The polyetheretherketone / zirconia composite material with a mass ratio of zirconia of 3% was put into a twin-screw extruder to extrude the composite material wire at 365°C, and then the obtained wire was sheared and pulverized into granules. Use mimics software to perform 3D reconstruction of CT data, 3-matic software to make corresponding injection molds for the stl model, import the stl model into the Cura slicing software to set slice layer thickness, exposure time of each layer and other parameters, and add support if necessary . Finally, import the slice file into the 3D printer to print out an injection mold that can withstand high temperatures of 450°C. Put the obtained granular composite material into the silo of the injection molding machine, install and fix the obtained injection mold, and perform injection molding at an injection temperature of 390°C and a mold temperature of 180°C. The resulting injection-molded dentures were polished with special dental eq...

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Abstract

The invention discloses a method for manufacturing dentures from polyetheretherketone / zirconium oxide composite materials. Polyetheretherketone and zirconium oxide are mixed with each other to obtainthe polyetheretherketone / zirconium oxide composite materials for manufacturing the dentures, and the mass of the zirconium oxide accounts for 1%-10% of the mass of the polyetheretherketone / zirconium oxide composite materials. The method includes directly manufacturing the dentures by the aid of injection molding processes; or manufacturing blocks by the aid of compression molding processes and then manufacturing the dentures by means of numerical-control processing. The method particularly includes mixing polyetheretherketone and zirconium oxide materials with one another according to certainproportions, manufacturing wires of composite materials by twin-screw extruders and smashing the wires to obtain granular composite materials; carrying out injection molding on the granular compositematerials by injection molding machines to obtain the polyetheretherketone dentures from the polyetheretherketone / zirconium oxide composite materials; or manufacturing the blocks by the aid of the compression molding processes and manufacturing the dentures by means of numerical-control processing. The method has the advantages that the problem of high ultimate polishing difficulty of existing polyetheretherketone dentures due to soft materials can be solved by the aid of the dentures manufactured by the aid of the method, and the problems of excessive abrasion of opposite-side natural teeth due to excessively high hardness of zirconium oxide dentures further can be solved.

Description

technical field [0001] The invention belongs to the technical field of oral prosthesis manufacture, and in particular relates to a method for manufacturing dentures made of polyetheretherketone / zirconia composite materials. Background technique [0002] Polyetheretherketone (PEEK) is a semi-crystalline thermoplastic polymer with excellent stability, mechanical properties, resistance to sliding wear and fretting wear. The elastic modulus of PEEK is close to that of bone, and it has excellent biocompatibility, stable chemical properties and radiation projection, and has been used clinically as orthopedic implants. The medical-grade PEEK polymer is designated as "the best long-term bone transplant PEEK", verified by the US Food and Drug Administration, PEEK has typical medical properties, such as high purity, high elongation at break, good biocompatibility, etc. . In the past ten years, PEEK materials have been widely used in the field of oral restorations. It has the advanta...

Claims

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Application Information

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IPC IPC(8): A61L27/44A61L27/50
CPCA61L27/446A61L27/50A61L2430/02A61L2430/12C08L71/00
Inventor 刘亚雄刘绘龙张玉琪任辉连芩王玲贺健康
Owner XI AN JIAOTONG UNIV
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