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A kind of cotton nanocellulose whisker composite resin material and preparation method

A technology of nano-cellulose and composite resin, which can be used in pharmaceutical formulations, dental preparations, compression molding cups, etc., can solve problems such as treatment failure, and achieve excellent mechanical properties

Active Publication Date: 2020-05-22
西安交通大学口腔医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the clinical use of resin has been continuously improved, when it is applied to the large-area filling of the posterior tooth load-bearing area, the treatment will still fail due to problems such as secondary caries and restoration fracture.

Method used

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  • A kind of cotton nanocellulose whisker composite resin material and preparation method
  • A kind of cotton nanocellulose whisker composite resin material and preparation method
  • A kind of cotton nanocellulose whisker composite resin material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1: The amount (w / w) of cotton nanocellulose whiskers added was 1%.

Embodiment 2

[0051] Example 2: The amount (w / w) of cotton nanocellulose whiskers added was 2%.

[0052] the result shows:

[0053] Add unmodified cotton nanocellulose whiskers, because without modification, cotton nanocellulose whiskers are too hydrophilic and easy to agglomerate. When added to a hydrophobic resin matrix, there will be separation between the filler and the matrix. Layer, the flexural and compressive properties of the resin matrix are significantly reduced) directly lead to the failure of the test, so only the results of Comparative Examples 1-4 and Examples 1 and 2 are described below.

[0054] (1) Effect on resin color stability:

[0055] Using a portable colorimeter to detect the L of the specimen before and after aging * 、a * , b * value and calculate the color difference value △E.

[0056] △E=[(△L) 2 +(△a) 2 +(△b) 2 ] 1 / 2

[0057] The obtained data were compared between two groups using one-way ANOVA and LSD (least significant difference method) test methods,...

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PUM

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Abstract

The invention discloses a cotton nano-cellulose whisker composite resin material for dental filling; the composite resin material, which is applied to a dental filling material, consists of a resin matrix and surface-modified cotton nano-cellulose whiskers, wherein the resin matrix is a mixture of Bis-GMA, TEGDMA, CQ and 4EDMAB. The addition of the surface-modified cotton nano-cellulose whiskers is 1-2% of the mass of the resin matrix. The whiskers provided by the invention, through appropriate addition, can avoid influence to the solubility, water absorption and color stability of the composite resin, and when the content of the cotton nano-cellulose whiskers reaches 1-2%, the optimum bending strength is achieved, which is 11% above that of a pure-resin matrix; and when the content of thecotton nano-cellulose whiskers is 1%, the bending strength is improved by 25% in comparison with the pure-resin matrix.

Description

technical field [0001] The invention belongs to the technical field of dental restoration, and in particular relates to a cotton nanocellulose whisker composite resin material for dental filling and a preparation method thereof. Background technique [0002] Tooth defect is a common and frequently-occurring disease in stomatology. Generally, tooth-colored restoration materials can be used for filling treatment. Since the 1960s, resin materials have entered people's field of vision because of their good color and excellent physical and chemical properties. It not only meets the clinical requirements for aesthetics, but also has good operability and tooth stability. Due to the advantages of bonding, it has gradually replaced silver amalgam and is widely used to fill dental defects. At the same time, when the composite resin is used to fill the cavity, the preparation of the cavity is simple, and the amount of tooth tissue removed is less, which improves the service life of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/884A61K6/887A61K6/891A61K6/898
CPCA61K6/60A61K6/884
Inventor 蒋月桂高格朱璋冯睿孙沫逸
Owner 西安交通大学口腔医院
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