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A method for preparing nano compound resin prosthetics material

Inactive Publication Date: 2007-04-25
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inorganic fillers in existing composite resins are generally quartz fillers, which have a large contact angle with water, low water absorption reduces micro-leakage, and have strong surface pollution resistance, but relatively poor physical and mechanical properties
At the same time, the composite resin has a certain degree of polymerization shrinkage, and the polymerization shrinkage of the composite resin seriously damages the edge seal of the restoration and causes the bonding of the tooth restoration interface to be damaged.
There are also many limitations in the existing preparation methods, such as: the process is too complicated, the cycle is long, and the operability is poor

Method used

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  • A method for preparing nano compound resin prosthetics material

Examples

Experimental program
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Effect test

preparation example Construction

[0027] As shown in Fig. 1, the present invention provides a kind of preparation method of nanocomposite resin oral restorative material, and it comprises the steps:

[0028] Prepare the hydroalcoholic system: hydrolyze the silane coupling agent under the catalysis of acetic acid to form a hydroalcoholic system containing the coupling agent;

[0029] Surface modification of inorganic nano-fillers: adding nano-inorganic powders to a water-alcohol system containing a coupling agent for ultrasonic dispersion, after the reaction is complete, washing and drying to obtain modified inorganic nano-fillers;

[0030] Preparation of resin matrix: Dilute the resin monomer with an appropriate amount of diluent to form a resin matrix with good mixing properties;

[0031] Preparation of nanocomposite resin: under the condition of avoiding light, add the prepared resin matrix to the photoinitiator and co-initiator, after stirring evenly, then add the modified inorganic nano filler, after mixin...

experiment example 1

[0045] Hydrolyze 2g of KH-570 under the action of acetic acid, add 100ml of hydroalcoholic solution (V water: V alcohol is 5:95), then add 20g of nano-hydroxyapatite powder, ultrasonically disperse for 60min, then move to an oven at 80 Dry at ℃ for 6h. Washing with the above-mentioned water-alcohol system, repeating the drying step, and pulverizing after drying.

[0046]Prepare 10g of composite resin: add 0.8865g of triethylene glycol dimethacrylate (TEGDMA) to 2.0685g of bisphenol A glycidyl methacrylate (Bis-GMA) to dilute, and stir evenly with a spatula to make it have a good Miscibility; under dark conditions, add 0.015g photoinitiator camphorquinone and 0.03g dimethylaminoethyl methacrylate (DMAEM) to the prepared resin matrix, stir evenly, add 7g of the above-mentioned modified inorganic Nano filler, after mixing evenly. Place it in a vacuum desiccator for 12 hours to remove air bubbles between the resins, and prepare a nanocomposite resin material. The composite resi...

experiment example 2

[0048] 3gKH-570 is hydrolyzed under the effect of acetic acid, and the hydroalcoholic solution of adding 100ml (V 水 :V 醇 3:7), then add 15g of barium-aluminum glass powder, ultrasonically disperse for 60min, then move to an oven and dry at 70°C for 8h. Washing with the above-mentioned water-alcohol system, repeating the drying step, and pulverizing after drying.

[0049] Prepare 10g of composite resin: Add 0.9850g of triethylene glycol dimethacrylate (TEGDMA) to 1.4775g of urethane dimethacrylate (UDMA) to dilute, and stir evenly with a spatula to make it have good mixing properties ; Under dark condition, add 0.0125g photoinitiator camphorquinone and 0.025g dimethylaminoethyl methacrylate (DMAEM) to the prepared resin matrix, after stirring, add the above-mentioned modified inorganic nanofiller of 7.5g , after mixing evenly. Place it in a vacuum desiccator for 14 hours to remove air bubbles between the resins, and prepare a nanocomposite resin material. The composite resi...

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Abstract

The invention relates to a method for preparing nanometer composite resin mouth repair material. Wherein, it comprises that: prepare water-mellow system; hydrolyzing the silane coupler in acetic acid catalyst to be water-mellow system with coupler; modifying the surface of inorganic nanometer stuff; adding the nanometer inorganic powder into the water-mellow system to be dispersed by ultrasonic wave; washing and drying to obtain the modified inorganic nanometer stuff; preparing resin substrate; adding resin monomer into some dilute agent to be diluted, to form resin substrate; preparing nanometer composite resin; in shade, adding the resin substrate into light initializer and share initializer, to be mixed and added with modified inorganic nanometer stuff; mixing and removing the bubble, to obtain the final product. The invention has simple process and short time, while the product has high mechanical strength.

Description

technical field [0001] The invention relates to a preparation method of an oral restorative material, in particular to a preparation method of a nanocomposite resin oral restorative material. Background technique [0002] At present, the per capita dental caries rate in my country is 40%, among which, the caries rate of children is 80%, that of young people is 60-70%, and that of the elderly is 52%. Teeth, gingivitis and periodontitis also had a 70% prevalence. There is a large demand for dental filling materials, and the market prospect is very promising. [0003] The commonly used tooth filling material is silver amalgam, which has the characteristics of strong operability, excellent mechanical properties and wear resistance. However, the color of silver amalgam does not harmonize with tooth tissue, and the potential mercury toxicity problem is gradually attracting people's attention. Composite resin, as a new type of dental restoration material, is a dental restoration ...

Claims

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Application Information

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IPC IPC(8): A61K6/083C08F220/10
Inventor 王臻张维丽李荣先
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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