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Resin infiltration zero-dimensional/one-dimensional porous ceramic composite material for dental restoration, and a preparation method thereof

A technology of resin infiltration and dental restoration, applied in ceramic products, dental preparations, applications, etc., can solve the problems of increasing difficulty and extremely high equipment requirements, and achieve the effect of improving fracture resistance, increasing bulk density, and increasing compactness

Inactive Publication Date: 2019-07-19
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, composite resin products cannot be directly used as CAD / CAM cutting materials, and must undergo harsh high temperature and high pressure (250-300MPa, 180°C) curing to obtain performance similar to resin-infiltrated porous ceramic products, which requires extremely high equipment. Increased the difficulty of actual production

Method used

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  • Resin infiltration zero-dimensional/one-dimensional porous ceramic composite material for dental restoration, and a preparation method thereof
  • Resin infiltration zero-dimensional/one-dimensional porous ceramic composite material for dental restoration, and a preparation method thereof
  • Resin infiltration zero-dimensional/one-dimensional porous ceramic composite material for dental restoration, and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of silylated hydroxyapatite nanowires: at 40°C, 24g of oleic acid and 24g of absolute ethanol were stirred and mixed evenly, and then 40mL of sodium hydroxide aqueous solution (50g / L) was sequentially added to the solution, 40mL calcium chloride aqueous solution (11g / L), 20mL calcium dihydrogen phosphate aqueous solution (24g / L), continue to stir for 2h, then transfer the solution into a hydrothermal kettle, react at 180°C for 24h and collect to obtain hydroxyapatite nanowires , after being washed and purified by ethanol, suspended in a mixture of KH570, deionized water, absolute ethanol and tetraethyl orthosilicate (the mass ratio of the four is 1:2:2:4), and heated to 50°C for 12 hours. The silylated hydroxyapatite nanowires were collected by filtration, washed with ethanol and dried in vacuum for later use. The aspect ratio of the product was greater than or equal to 50.

[0030] (2) Preparation of resin system: after mixing bisphenol A-glycidyl metha...

Embodiment 2

[0035] (1) Preparation of silylated hydroxyapatite nanowires: at 40°C, 24g of oleic acid and 24g of absolute ethanol were stirred and mixed evenly, and then 40mL of sodium hydroxide aqueous solution (50g / L) was sequentially added to the solution, 40mL calcium chloride aqueous solution (11g / L), 20mL calcium dihydrogen phosphate aqueous solution (24g / L), continue to stir for 2h, then transfer the solution into a hydrothermal kettle, react at 180°C for 24h and collect to obtain hydroxyapatite nanowires , washed with ethanol, purified, and dried, placed in a muffle furnace to raise the temperature to 700°C at a rate of 5°C / min and keep the temperature constant for 12h. Suspend the sintered hydroxyapatite nanowires in a mixture of KH570, deionized water, absolute ethanol and tetraethylorthosilicate (the mass ratio of the four is 1:2:2:4), and heat up to 50 After reacting at ℃ for 12 hours, the silylated hydroxyapatite nanowires were collected by filtration, washed with ethanol, and...

Embodiment 3

[0041] (1) Preparation of silylated hydroxyapatite nanowires: same as step (1) in Example 2.

[0042] (2) Preparation of resin system: same as step (2) of Example 1.

[0043] (3) Preparation of porous ceramic preform: Weigh an equal amount of silanized barium glass-ceramic powder with a particle size of 0.4, 0.7 and 1.0 μm, 4.75 g in total, and 0.25 g of silanized hydroxyapatite prepared in step (1) After the stone nanowires are mixed evenly by two-way rotation (revolution: 2000rpm; rotation: 300rpm), add absolute ethanol (0.5g) to infiltrate evenly, then transfer to a steel mold, apply 2MPa pressure, press for 1min, and form after the ethanol volatilizes The porous ceramic prefabricated body has a porosity of 20±3%.

[0044] (4) Resin system permeates the porous ceramic preform: same as step (4) of Example 1.

[0045] (5) Curing molding of resin-infiltrated ceramic matrix composite material: same as step (5) of Example 1.

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Abstract

The invention relates to a resin infiltration zero-dimensional / one-dimensional porous ceramic composite material for dental restoration, and a preparation method thereof, and belongs to the field of dental restoration materials. According to the present invention, a dental restoration material with performances well matched with natural human teeth is designed and prepared; the guiding ideology isbased on the principle of multi-scale and multi-dimensional reinforcement and toughening; a porous ceramic preform is prepared by mixing preparing zero-dimensional ceramic powder and one-dimensionalceramic nano-wires / fibers, and a dental restoration material having a good resin and ceramic double-interpenetrating cross-linking network structure, capable of being using for CAD / CAM technology cutting and having mechanical properties matched with natural teeth and excellent cutability is prepared by using a vacuum-assisted resin infiltration technology and a thermal curing technology; and the bridging effect of the one-dimensional nanometer filler can effectively prevent the occurrence and development of cracks so as to improve the mechanical properties of the restored body and can effectively reduce the wear loss of the ceramic powder.

Description

technical field [0001] The invention relates to the field of dental restoration materials, in particular to a machinable resin-infiltrated ceramic composite material for dental restoration and a preparation method thereof. Background technique [0002] In recent years, computer-aided design (computer-aided design) / computer-aided manufacturing (computer-aided manufacturing), referred to as CAD / CAM, has developed rapidly in the field of dental restoration. It has expanded from the production of a single inlay to the production of veneers, Full crowns, fixed bridges and complete dentures, etc. In particular, the emergence of chairside CAD / CAM technology has greatly reduced the operation steps of restoration production, shortened the production time, and can reduce sample preparation errors and improve the accuracy of sample preparation, so that the restoration can be completed in one visit , which brings great convenience to both doctors and patients. [0003] The advantages ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B26/10A61K6/02A61K6/083
CPCC04B26/10A61K6/802A61K6/818A61K6/887C04B22/16C04B14/22C04B38/0074
Inventor 蔡晴康龙昭兰金叻黎雷易蜜杨小平
Owner BEIJING UNIV OF CHEM TECH
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