Dental partially-glass-infiltrated functionally-gradient zirconia ceramic material

A zirconia ceramic and functional gradient technology, which is applied in the application field of biomedical materials, can solve the problems of insufficient bonding force between zirconia ceramics and veneer ceramics, and achieve the effect of good biological compatibility.

Active Publication Date: 2015-07-15
JINAN UNIVERSITY
View PDF3 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of insufficient bonding force between existing zirconia ceramics and veneer porcelain, the purpose of the present invention is to provide a functionally graded zirconia ceramic material with a uniform elastic modulus and hardness and a gradually changing gradient that is partially infiltrated with dental glass, thereby Improving the bonding strength of zirconia ceramics and facing porcelain

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 partially-glass-infiltrated functionally-gradient zirconia ceramic material
  • Dental partially-glass-infiltrated functionally-gradient zirconia ceramic material
  • Dental partially-glass-infiltrated functionally-gradient zirconia ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of a functionally graded zirconia ceramic material infiltrated with dental glass, such as figure 1 shown, including the following steps:

[0029] (1) Preparation of permeable glass material: according to the formula La 2 o 3 15wt%, ZrO 2 5wt%, Y 2 o 3 5wt%, SiO 2 20wt%, B 2 o 3 15wt%, BaO 15wt%, Al 2 o 3 15wt%, TiO 2 4wt%, CaO 4wt%, CeO 2 1wt%, Fe 2 o 3 1 wt%, weigh the powder of each component, put it into a ball mill jar, and use deionized water as the medium to ball mill for 6 hours, and mix thoroughly; The water is completely evaporated; the powder is put into a platinum crucible, placed in a muffle furnace, heated to 1300°C in an air atmosphere, kept at a constant temperature for 2 hours, and cooled to room temperature with the furnace; Pass through a 200-mesh sieve after drying to make glass powder;

[0030] (2) Preparation of zirconia green body by pre-sintering: the zirconia powder is pressed into a green body by cold pressing...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a dental partially-glass-infiltrated functionally-gradient zirconia ceramic material. The dental partially-glass-infiltrated functionally-gradient zirconia ceramic material is composed of three layers, i.e., (1) a glass layer with a thickness of 0.2 mm, (2) a glass-infiltrated zirconia functionally-gradient layer with a thickness of 0.3 mm and (3) a compact zirconia layer with a thickness of 0.5 mm, wherein glass comprises, by mass, 15% of La2O3, 5% of ZrO2, 5% of Y2O3, 20% of SiO2, 15% of B2O3, 15% of BaO, 15% of Al2O3, 4% of TiO2, 4% of CaO, 1% of CeO2 and 1% of Fe2O3. The bonding strength between the dental partially-glass-infiltrated functionally-gradient zirconia ceramic material and veneering porcelain is increased by 2.5 times compared with the bonding strength of a traditional zirconia material. The dental partially-glass-infiltrated functionally-gradient zirconia ceramic material has good biocompatibility and accords with standards prescribed in ISO-7405 and ISO-7406 Technical Reports--Biological Assessment of Dental Materials.

Description

technical field [0001] The invention belongs to the application field of biomedical materials, in particular to a functionally graded zirconia ceramic material partially infiltrated by dental glass. Background technique [0002] Metal-ceramic restorative materials were once considered the "gold standard" in restorative dentistry. However, in the past ten years, metal-ceramic restoration materials have been gradually replaced by all-ceramic restoration materials with better aesthetics and biocompatibility. The current zirconia restorations mostly adopt a double-layer porcelain structure, that is, the veneering porcelain is sintered on a strong base material to achieve a beautiful and firm effect. Yttrium-stabilized tetragonal zirconia (Y-TZP) base material has high strength and toughness, can withstand high occlusal pressure, and becomes an ideal substitute material for metal-ceramic restorations. However, the bonding strength between the zirconia substrate and the veneerin...

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): C04B35/48C04B41/86
Inventor 孙挺邵龙泉刘若宇
Owner JINAN UNIVERSITY
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