Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dental alumina-zirconia eutectic ceramic rod and preparation method thereof

A technology of dental ceramics and zirconia, applied in the field of stomatology, can solve the problems of aging and failure of zirconia ceramics, and achieve the effect of high anti-aging performance and optimized low-temperature degradation resistance.

Active Publication Date: 2019-06-11
NORTHWESTERN POLYTECHNICAL UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to solve the problem that the aging phenomenon of zirconia ceramics in the hydrothermal environment causes its failure in clinical application, the present invention proposes an anti-aging dental ceramic material and its preparation method

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dental alumina-zirconia eutectic ceramic rod and preparation method thereof
  • Dental alumina-zirconia eutectic ceramic rod and preparation method thereof
  • Dental alumina-zirconia eutectic ceramic rod and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The invention is an anti-aging alumina-zirconia eutectic ceramic rod, which is composed of alumina and zirconia, wherein the alumina content is 57.42%, and the zirconia content is 42.58%, and the stated percentages are mass percentages.

[0046] The alumina is micron-sized alumina powder with a purity of 99.9%. The zirconia is micron-sized zirconia powder with a purity of 99.9%.

[0047] The zirconia powder contains 3% yttrium oxide, the percentage is a molar ratio, and the molar percentage content of the yttrium oxide is its proportion in the zirconia.

[0048] The present invention also proposes a method for preparing the anti-aging dental ceramic material, the specific process is:

[0049] Step 1, the preparation of the original eutectic powder.

[0050] Weigh the alumina and zirconia according to the mass percentage of 57.42% for alumina and 42.58% for zirconia, and prepare two mixed powders, each with a mass of 100g.

[0051] Put the two mixed powders into two z...

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

No PUM Login to View More

Abstract

The invention provides a dental alumina-zirconia eutectic ceramic rod and a preparation method thereof. The invention relates to an anti-aging dental ceramic material and a preparation method thereof.The anti-aging dental ceramic material is composed of alumina and zirconia. The directional solidification of the material is realized by rapid laser beam heating and cooling, and alumina-zirconia eutectic bioceramic with smooth surface is prepared. The XRD results show that after the alumina-zirconia eutectic bioceramic with a drawing rate of 200 [mu]m / s is aged for 145 hours, a tetragonal zirconia phase is observed at the diffraction angles of 35.2 degrees, 40.5 degrees and 41.3 degrees, indicating that the phase transformation of the alumina-zirconia eutectic bioceramic does not occur in the hydrothermal environment, i.e., the alumina-zirconia eutectic bioceramic has excellent aging resistance.

Description

technical field [0001] The invention relates to the technical field of stomatology, in particular to preparing an alumina-zirconia eutectic ceramic rod with excellent anti-aging performance through a laser suspension zone melting method. Background technique [0002] Driven by the trend of global aging population, people's demand for dentures is increasing, so there is a great need to develop high-performance dental restoration materials. Zirconia ceramics have been widely used as dental restoration materials, such as crowns, porcelain posts, bridge piers, due to their high toughness, excellent aesthetic restorative properties (visible light transparency, X-ray opacity, etc.) and good biocompatibility , implants, etc. However, in a humid environment, zirconia ceramics will spontaneously undergo a tetragonal t–monoclinic m transition, degrading the mechanical properties and stability of the material. In 2001, about 400 zirconia femoral heads implanted in the human body suff...

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
IPC IPC(8): C04B35/10C04B35/622C04B35/653
Inventor 苏海军樊光娆张军刘林郭敏傅恒志
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com