All-zirconia ceramic dental implant and preparation method thereof

A zirconia ceramic, zirconia technology, applied in dental preparations, dentistry, dental prostheses, etc., can solve the problems of foreign body sensation, gingival recession and bleeding, poor ductility and toughness of zirconia all-ceramic materials, etc. The effect of impact strength

Inactive Publication Date: 2021-06-04
SHAOXING RES INST OF SHANGHAI UNIV +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal-ceramic teeth are also a quick and effective way to restore teeth, but compared with zirconia ceramics, metal ions in metal-ceramic teeth will have adverse reactions to the human body, such as blackened gums, receding and bleeding gums, etc.
In addition, the light transmission, color and shape of metal porcelain teeth are quite different from natural teeth, and it will produce a blue-gray effect under the light, which will affect the appearance
Moreover, compared with ceramics, the biocompatibility between metal and the human body is poor, and the user will have a foreign body sensation
[0003] Chinese patent CN108056924A discloses a preparation method of a dental implant material, using zirconia or alumina, stearic acid, nano-silver, paraffin, PEEK resin, ethylene vinyl acetate copolymer, and organic binders for ball milling and drying to obtain a composite material Powder is used as a dental implant material, and the resin composite material obtained by this preparation method has the defect of insufficient hardness; Chinese patent CN105884347A discloses a high-performance dental zirconia ceramic material, which is obtained by dyeing and sintering nano-zirconia, solvent, and dispersant. High-performance dental inner crowns, the zirconia all-ceramic materials obtained by this method have problems of poor ductility and toughness

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The invention provides a method for preparing a full zirconia ceramic dental implant, comprising the following steps:

[0025] Melt the polycarbonate to obtain a homogeneous gel;

[0026] mixing the homogeneous gel with zirconia powder to obtain a homogeneous gel with zirconia;

[0027] Heating the homogeneous gel with zirconia to obtain silky full zirconia short fiber cotton, the heating temperature is 2700-3000°C;

[0028] The silky full zirconia short fiber cotton, zirconia powder and organic binder are sequentially mixed, granulated, injected, degreased and sintered to obtain the full zirconia ceramic dental implant.

[0029] The invention melts polycarbonate (PC) to obtain homogeneous gel. In the present invention, the melting temperature is preferably 220-230°C, more preferably 220°C, and the time is preferably not less than 1 hour. The melting is preferably carried out under the condition of stirring while heating. Stirring can not only accelerate the dissolut...

Embodiment 1

[0050] A manufacturing process for full zirconia ceramic dental implants, comprising the following steps:

[0051] (1) Powder preparation: take zirconia powder as raw material, and grind zirconia into particles with a diameter of 30nm;

[0052] (2) Gel preparation: heat and melt granular polycarbonate in an internal mixer, heat up to 220°C, and stir while heating until the PC is completely molten;

[0053] (3) Mixing: add the zirconia particles in the step (1) to the homogeneous gel prepared in the step (2), stir evenly to obtain a homogeneous gel with zirconia, and the mass ratio of the gel is 15%, zirconia particles are evenly distributed in the gel;

[0054] (4) Filamentation: Pour the homogeneous gel with zirconia in step (3) continuously into a constant temperature container with a leak at the bottom. The temperature of the constant temperature container is 220°C, and a collector is installed under the container . The homogeneous gel with zirconia will continuously flo...

Embodiment 2

[0063] A manufacturing process for full zirconia ceramic dental implants, comprising the following steps:

[0064] (1) Powder preparation: take zirconia powder as a raw material, and grind zirconia into particles with a diameter of 50 nm;

[0065] (2) Gel preparation: heat and melt granular polycarbonate in an internal mixer, heat up to 220°C, and stir while heating until the PC is completely molten;

[0066] (3) Mixing: add the zirconia particles in the step (1) to the homogeneous gel prepared in the step (2), stir evenly to obtain a homogeneous gel with zirconia, and the mass ratio of the gel is 25%, zirconia particles are evenly distributed in the gel;

[0067] (4) Filamentation: Pour the homogeneous gel with zirconia in step (3) continuously into a constant temperature container with a leak at the bottom. The temperature of the constant temperature container is 220°C, and a collector is installed under the container . The homogeneous gel with zirconia will continuously ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
hardnessaaaaaaaaaa
bending strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides an all-zirconia ceramic dental implant and a preparation method thereof, and belongs to the technical field of oral implantation. Herein, zirconium oxide powder is used as a raw material, zirconium oxide powder is added into molten PC, homogeneous gel with zirconium oxide is prepared, then heating is conducted, PC in the homogeneous gel with zirconium oxide volatilizes at the high temperature of 2700-3000 DEG C, zirconium oxide in the homogeneous gel with zirconium oxide is molten at the temperature of 2700-3000 DEG C, and the zirconium oxide in the homogeneous gel with zirconium oxide is melted at the temperature of 2700-3000 DEG C, thereby forming filiform all-zirconium-oxide short fiber cotton from single zirconium oxide particles; then the filiform all-zirconium-oxide short fiber cotton is mixed with zirconium oxide powder, and an organic binder is added for granulation; finally, the implant tooth green body is manufactured by adopting an injection molding technology and then is degreased and sintered, wherein the molding direction of zirconium oxide unit cells can be changed in the sintering process; therefore, the impact strength and the bending strength of the all-zirconia ceramic dental implant are improved.

Description

technical field [0001] The invention relates to the field of oral implant technology, in particular to a full zirconia ceramic dental implant and a preparation method thereof. Background technique [0002] With the progress of society and people's pursuit of beauty, people's requirements for the beauty of teeth are constantly improving. People begin to plant implants in the missing teeth, and the technology of dental implants has also developed rapidly. Zirconia ceramics is a biologically inert inorganic non-metallic material with excellent biological properties, good wear resistance, strong corrosion resistance, high melting point, high boiling point, low thermal expansion coefficient, etc., durable and beautiful in shape Realistic and loved by people. Metal-ceramic teeth are also a fast and effective way to restore teeth, but compared with zirconia ceramics, metal ions in metal-ceramic teeth will have adverse reactions to the human body, such as blackened gums, receding a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/48A61K6/818
CPCC04B35/48A61K6/818C04B2235/5236C04B2235/96
Inventor 李爱军张军军谢洪宾
Owner SHAOXING RES INST OF SHANGHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap