Supercharge Your Innovation With Domain-Expert AI Agents!

Zirconium oxide false tooth with bioactivity

A bioactive, zirconia technology, applied in the field of biomedical engineering materials, can solve problems such as no biological activity

Active Publication Date: 2017-11-24
HANGZHOU ERRAN TECH
View PDF7 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, because zirconia is chemically inert and has certain biocompatibility, but it does not have biological activity, its application has been limited.

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
  • Zirconium oxide false tooth with bioactivity
  • Zirconium oxide false tooth with bioactivity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] Such as figure 1 The bioactive zirconia denture shown has a gradient structure, which includes a bioactive outer surface layer and a matrix structure layer in sequence from the occlusal outer surface to the bonding inner surface, and the bioactive outer surface layer consists of the outer The nanoporous layer is composed of nanoporous layer and the inner microporous layer. The nanoporous layer is composed of zirconia nanocrystal grains and several nanopores penetrating the nanoporous layer. The microporous layer is composed of zirconia nanocrystal grains and several micropores penetrating the microporous layer. (Nanopore, micropore structure see figure 2 ), the matrix structure layer is composed of the outer dense zirconia nano-grain layer and the inner dense zirconia micro-grain layer, the interface between the nanoporous layer and the microporous layer forms a uniform gradient transition, the microporous layer and the matrix structure layer The interface between the...

manufacture example A

[0072] 4.1.1 Y (2-6mol%) partially stabilizes ZrO 2 Manufacture example A is as follows: adopt the method for reverse dripping to prepare Y partially stabilized ZrO 2 Slurry, the prepared precipitant NH 4 HCO 3 (10-50%) + NH 3 ·H 2 The O solution is placed in an Erlenmeyer flask, and the Erlenmeyer flask is placed in a magnetic stirrer or a stirred constant temperature water bath reactor, and the prepared Y-containing 3+ 、Zr 4＋ The mother liquor includes zirconium hydroxide (ZrO(OH) 2 •nH 2 O≥99%), zirconium oxychloride (ZrOCl 2 •8H 2 O≥99%), zirconium nitrate (Zr(NO 3 ) 4 ·5H 2 O≥99%) one of them; yttrium nitrate Y (NO 3 ) 3 ·6H 2 O, yttrium chloride (YCI 3 ·6H 2O≥99.99%); slowly drop into the precipitant, and stir vigorously to make it fully react, after the reaction is completed, age for more than 8-12 hours, use a centrifuge to quickly separate, and vacuum filter the precipitate, and use Wash with distilled water and ethanol, and dry at 100-200°C for 1-2 h...

manufacture example B

[0073] 4.1.2. Y (2-6mol%) partially stabilizes ZrO 2 Manufacture example B is as follows: the Zr that concentration is 0.5-1mol / L 4＋ Zirconium hydroxide (ZrO(OH) 2 •nH 2 (O≥99%) suspension was added to the reactor, and then yttrium oxide was added to the reactor in 3 to 5 times. Heat the reactor to 40-60°C and keep it warm for 2-3 hours. After the added yttrium oxide is completely dissolved, add polyvinyl alcohol with 0.5-1wt% zirconium hydroxide weight, then heat it to 200-250°C and keep it warm for 55- The hydrothermal-hydrolysis reaction was carried out for 65 hours. Keep the internal pressure at 2-3MPa to gradually hydrolyze and precipitate. Use a centrifuge to separate quickly, vacuum filter the precipitate, wash with distilled water and ethanol, and dry at 100-200°C for 1-2 hours to obtain the Y part of the stable ZrO 2 Powder B.

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
Sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a zirconium oxide false tooth with bioactivity. The zirconium oxide false tooth has a gradient structure, and successively comprises an outer surface layer with bioactivity and a substrate structure layer from an outer self-occlusion surface to an inner splicing surface; the outer surface layer with bioactivity is composed of a nanometer pore layer on the outer side and a micron-pore layer on the inner side; the micron-pore layer is composed of zirconium oxide nano-crystal grains and a plurality of micron pores penetrating through the micron-pore layer; the substrate structure layer is composed of an outside compact zirconium oxide nano-crystal grain layer and an inside compact zirconium oxide micro-crystal grain layer; uniform gradient transition is formed on an interface between the nano-pore layer and the micron-pore layer; the uniform gradient transition is formed on the interface between the micron-pore layer and the outside compact zirconium oxide nano-crystal grain layer of the substrate structure layer. The zirconium oxide false tooth with bioactivity has the advantages of high strength, high toughness, low friction coefficient, low antagonist abrasion, good biocompatibility and high bioactivity.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering materials, in particular to a bioactive zirconia denture. Background technique [0002] According to data records, the development of dentures has a very long history. Researchers have found dentures in human skeletons in Mexico 4,500 years ago. These dentures may be the teeth of wolves or leopards. This may be the oldest dental restoration in America. [0003] The first generation of denture materials used human or animal teeth. In the west, hippopotamus teeth, ivory, and cow teeth were used to make dentures at first, but animal teeth are not as good-looking as human teeth, and it takes a lot of time to polish them, so people began to look for new sources of dentures. [0004] Second generation dentures are metal dentures. Metal materials as biomedical functional materials are an important branch of material science, and have been used in human implants for more than 400 years. ...

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): A61C13/083C04B35/48C04B35/622
CPCA61C13/083C04B35/48C04B35/622C04B2235/6026C04B2235/96C04B2235/3225C04B2235/3217A61C13/09A61C13/0835A61C5/73C04B41/87C04B2111/00836C04B2111/00405C04B41/009C04B41/5042C04B35/486C04B2235/606C04B2235/6562C04B41/4539C04B41/4578C04B41/4582A61K6/818A61K6/17A61C13/0019A61C13/0022C04B35/4885C04B35/6261C04B35/62625C04B35/64C04B2235/3246C04B2235/5454C04B2235/604C04B2235/786B28B11/04C01G25/02B01J13/0004C04B2235/661B28B1/30B01J13/0039C04B35/624C04B41/524C04B41/5315C04B38/06B28B1/001B33Y40/00B28B11/22
Inventor 沈志坚李廷凯
Owner HANGZHOU ERRAN TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com