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Nano-composite resin dental material for numerical control machine-shaping and preparation thereof

A nano-composite, processing and molding technology, used in dental preparations, dentistry, dental prostheses, etc., can solve the problems of insufficient density of nano-composite materials, and achieve good clinical application value, high wear resistance and hardness, and wear resistance. The effect of high mechanical properties such as hardness

Inactive Publication Date: 2008-08-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of insufficient density of nanocomposites in terms of technology, so that it can be more widely used in clinical dental materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing a nanocomposite resin dental material for numerical control processing and molding, comprising the following steps:

[0034] (1) 10g of bisphenol A-glycidyl methacrylate and 10g of triethylene glycol dimethacrylate are mixed to form a resin matrix, which is added to a light-proof stirring container and stirred and mixed evenly;

[0035] (2) After equal weight adjustment of 0.3 g of initiator benzoyl peroxide and 0.3 g of reducing agent N, N-dihydroxyethyl-3-4 methylaniline, solidify at room temperature for 3 minutes, and mix well.

[0036] (3) Add 10g of nano-silica and 3g of nano-zirconia into 800ml of absolute ethanol respectively, ultrasonically disperse for 30min, the ultrasonic frequency is 1.5MHz, and the power is 100W, and then add 0.5g of deionized water to hydrolyze the silane coupling agent γ-methacryloyloxypropyltrimethoxysilane was stirred and reacted at 50°C for 24 hours, and then dried by centrifugation to obtain the modified inorgan...

Embodiment 2

[0042] A method for preparing a nanocomposite resin dental material for numerical control processing and molding, comprising the following steps:

[0043] (1) 14g of bisphenol A-glycidyl methacrylate and 6g of triethylene glycol dimethacrylate are mixed to form a resin matrix, which is added to a light-proof stirring container and stirred and mixed evenly;

[0044] (2) After equal weight reconciliation of 0.5g initiator benzoyl peroxide and 0.5g reducing agent N, N-dihydroxyethyl-3-4 methylaniline, solidify at room temperature for 3 minutes, and mix well .

[0045] (3) Add 12g of nano-silica and 5g of nano-zirconia into 1000ml of absolute ethanol, disperse for 30min by ultrasonic (frequency 1.5MHz, power 100W), then add 0.5g deionized water to hydrolyze the silane coupling agent γ-methacryloyloxypropyltrimethoxysilane was stirred and reacted at 50°C for 24 hours, and then dried by centrifugation to obtain the modified inorganic filler nano-silica and nano-zirconia.

[0046] (4...

Embodiment 3

[0050] A method for preparing a nanocomposite resin dental material for numerical control processing and molding, comprising the following steps:

[0051] (1) 15g of bisphenol A-glycidyl methacrylate and 10g of triethylene glycol dimethacrylate are mixed to form a resin matrix, which is added to a light-proof stirring container and stirred and mixed evenly;

[0052] (2) The initiator benzoyl peroxide containing 0.8g and the reducing agent N, N-dihydroxyethyl-3-4 methylaniline containing 0.8g are adjusted by equal weight, solidified at room temperature for 5 minutes, and mixed uniformly .

[0053] (3) Add 20g of nano-silica and 8g of nano-zirconia to 1000ml of absolute ethanol, disperse for 30min by ultrasonic (frequency 1.5MHz, power 100W), and then add 0.5g deionized water to hydrolyze the silane coupling agent γ-methacryloyloxypropyltrimethoxysilane was stirred and reacted at 50°C for 24 hours, and then dried by centrifugation to obtain the modified inorganic filler (nano-s...

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Abstract

The invention discloses nano composite resin dental material used for numerical control forming and the preparation method, which comprises the following composition according to weight account: resin matrix A 25 to 36; resin matrix B 15 to 30; inorganic filler A 30 to 35; inorganic filler B 8 to 15; organic filler 0 to 2; initiator 0.8 to 1.4; reducing agent 0.8 to 1.4; inhibitor 0.01 to 0.05; coloring agent 0.001 to 0.007. The preparation method comprises the following: the resin matrix preparing; the initiation system mixture preparing; inorganic filler mixture preparing; mixed avoiding light, ultrasonic scattering, polymerization solidifying and shaping upon the mixture from the above steps with the organic filler, the inhibitor and the coloring agent. The nano composite resin dental material has the advantages of high density, good wear resistant performance and high hardness and more excellent performance than polymethyl methacrylate artificial tooth and simple preparation method. The preparation method is suitable for dentistry clinical application and popularization.

Description

technical field [0001] The invention relates to nanobiological materials, in particular to nanocomposite resin dental materials, in particular to a new nanocomposite resin dental material for numerical control processing and a preparation method thereof. Background technique [0002] At present, the main material of artificial teeth widely used in clinical practice is methyl methacrylate, but the Vickers hardness of commonly used polymethyl methacrylate artificial teeth is 15-20MPa, and the coefficient of linear expansion is 80-90× 10 -6 ·K -1 , elastic modulus of 2 ~ 2.4GPa, density of 1.1 ~ 1.2g / cm 3 . The material has problems such as low hardness, large shrinkage, poor wear resistance, low strength, and insufficient density. Moreover, the influence of the wear resistance of artificial teeth is more manifested in the restoration of total dentures. The dentures are severely worn, food cannot be bitten, and the vertical height is reduced. These factors are also one of t...

Claims

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Application Information

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IPC IPC(8): A61K6/083C08F220/18C08K9/06C08K3/36C08K3/22
Inventor 黄岳山张成明
Owner SOUTH CHINA UNIV OF TECH
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