Photocurable composite resin for dental restoration and preparation method thereof

A composite resin and dental restoration technology, applied in dental preparations, dentistry, dental prosthesis, etc., can solve the problems of low strength, low curing shrinkage, compressive strength, poor wear resistance, etc., and achieve improved filling ratio and good optical properties and microhardness, low cure shrinkage

Active Publication Date: 2015-08-19
北京欧亚铂瑞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the technical problems of high shrinkage rate, low strength and poor wear resistance of the existing dental restoration materials, and provide a low curing shrinkage rate, high compressive strength and good wear resistance. Photocurable composite resin for dental restoration and preparation method thereof

Method used

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  • Photocurable composite resin for dental restoration and preparation method thereof
  • Photocurable composite resin for dental restoration and preparation method thereof
  • Photocurable composite resin for dental restoration and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (a) Preparation of resin matrix

[0041] First, stir and mix 49.5g bisphenol A glycidyl methacrylate monomer and 49.5g triethylene glycol dimethacrylate monomer evenly, then add 0.5g camphorquinone and 0.5g N, N ,-Dimethacrylate ethyl ester, and then stirred and mixed evenly at 50°C to obtain a resin matrix.

[0042] (b) Preparation of silanized micron silica

[0043] Add 100g of micron silica powder (1-2μm) into 375ml of vinyltriethoxysilane (A151) ethanol solution with a mass fraction of 8%, react at 60°C for 4 hours, centrifuge, wash and dry to obtain Silanized Micron Silica.

[0044] (c) Preparation of PMMA modified nano silica

[0045] (1) Add 10g of nano-silica powder (10-20nm) to 200ml of γ-aminopropyltriethoxysilane (KH550) ethanol solution with a mass fraction of 15%, and react at 60°C for 4 hours , washed and dried by centrifugation to obtain amino (-NH 2 ) modified nano silicon dioxide;

[0046] (2) 10g amino (-NH 2 ) modified nano-silica (SiO 2 -NH ...

Embodiment 2

[0056] (a) Preparation of resin matrix

[0057] First, stir and mix 60g bisphenol A glycidyl methacrylate monomer and 39.4g triethylene glycol dimethacrylate monomer evenly, then add 0.3g camphorquinone and 0.3g N, N under dark conditions, - Ethyl dimethacrylate, then stirred and mixed evenly at 50°C to obtain a resin matrix.

[0058] (b) Preparation of silanized micron silica

[0059] Add 100g of micron silica powder (1-2μm) into 400ml of vinyltriethoxysilane (A151) ethanol solution with a mass fraction of 5%, react at 50°C for 6 hours, centrifuge, wash and dry to obtain Silanized Micron Silica.

[0060] (c) Preparation of PMMA modified nano silica

[0061] (1) Add 10g of nano-silica powder (10-20nm) to 200ml of γ-aminopropyltriethoxysilane (KH550) ethanol solution with a mass fraction of 10%, and react at 50°C for 6 hours , washed and dried by centrifugation to obtain amino (-NH 2 ) modified nano silicon dioxide;

[0062] (2) 20g amino (-NH 2 ) modified nano-silica (S...

Embodiment 3

[0072] (a) Preparation of resin matrix

[0073] First, stir and mix 40g bisphenol A glycidyl methacrylate monomer and 58.4g triethylene glycol dimethacrylate monomer evenly, then add 0.8g camphorquinone and 0.8g N, N, - Ethyl dimethacrylate, then stirred and mixed evenly at 40°C to obtain a resin matrix.

[0074] (b) Preparation of silanized micron silica

[0075]Add 100g of micron silica powder (1-2μm) into 400ml of vinyltriethoxysilane (A151) ethanol solution with a mass fraction of 10%, react at 70°C for 2 hours, centrifuge, wash and dry to obtain Silanized Micron Silica.

[0076] (c) Preparation of PMMA modified nano silica

[0077] (1) Add 10g of nano-silica powder (10-20nm) to 250ml of γ-aminopropyltriethoxysilane (KH550) ethanol solution with a mass fraction of 20%, and react at 70°C for 2 hours , washed and dried by centrifugation to obtain amino (-NH 2 ) modified nano silicon dioxide;

[0078] (2) 10g amino (-NH 2 ) modified nano-silica (SiO 2 -NH 2 ) into 20...

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Abstract

The invention relates to light curable composite resin for dental restoration and a preparation method thereof. The light curable composite resin is used for solving the technical problems of high shrinkage, low strength and poor abrasive resistance of an existing dental restoration material, and comprises a resin matrix and reinforcing filler, wherein the reinforcing filler comprises silanized micro-sized silicon dioxide, modified nanoscale silicon dioxide and core-shell structured nanofibers. The light curable composite resin provided by the invention can be widely applied to the field of dental restoration.

Description

technical field [0001] The invention relates to the field of dental materials, in particular to a light-cured composite resin for dental restoration and a preparation method thereof. Background technique [0002] Visible light-curable composite resin is a new type of dental material, and it is one of the commonly used filling materials and restoration materials in dentistry. Since the appearance of composite resin as a tooth restoration material in the mid-1960s, due to its beautiful color, excellent physical properties, and strong operability, it has been widely used to replace silver amalgam, and its application scope has gradually expanded from anterior tooth restoration Extended to posterior restorations. [0003] However, composite resins still have some deficiencies, such as high polymerization shrinkage, insufficient mechanical properties, and low wear resistance. [0004] The composite resin is mainly composed of an organic resin matrix and a surface-modified inorg...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L35/02C08K9/06C08K9/04C08K7/18C08K3/36C08F222/20D01F8/08D01D5/34A61K6/083
Inventor杨小平周学刚邓旭亮蔡晴
Owner北京欧亚铂瑞科技有限公司