Preparation of high-performance low-shrinkage hyperbranched polyamine-ester composite resin for dental restoration

A low-shrinkage dental and hyperbranched polymer technology, which is applied in the field of preparation of dental restoration materials, can solve the problems of reduced strength performance and low shrinkage, and achieve good mechanical properties and excellent mechanical strength.

Active Publication Date: 2021-07-27
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the hyperbranched polyamine-ester-based monomers in the prior art are used to improve the polymerization shrinkage of dental restoration composite resins. Preparation method of hyperbranched polyamine-ester based composite resin for dental restoration

Method used

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  • Preparation of high-performance low-shrinkage hyperbranched polyamine-ester composite resin for dental restoration
  • Preparation of high-performance low-shrinkage hyperbranched polyamine-ester composite resin for dental restoration
  • Preparation of high-performance low-shrinkage hyperbranched polyamine-ester composite resin for dental restoration

Examples

Experimental program
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Effect test

Embodiment 1

[0049] A preparation method of hyperbranched polyamine-ester composite resin for dental restoration with high performance and low shrinkage, the specific process is as follows:

[0050] (1) Preparation of silanized inorganic filler:

[0051] The silanized inorganic filler is prepared by surface modification of the inorganic filler. The specific modification treatment method is: add 50g of the inorganic filler to 600mL of cyclohexane, and the inorganic filler is micron silica (particle size 0.8μm) and nano-silica (particle size 20nm); then stirred and reacted in an oil bath at 20°C for 20min, and then added 5.5mL of n-propylamine and 3.3mL of γ-(methacryloyloxy)propyl Trimethyloxysilane, stirred and reacted at 70°C for 20min. During the reaction, the stirring speed was kept at 800r / min; Dry in a vacuum oven for 24 hours to obtain a silanized inorganic filler.

[0052] (2) Preparation of modified hyperbranched polyamine-ester:

[0053] (1) Mix trimethylolpropane, N,N-dihydrox...

Embodiment 2

[0064] A preparation method of hyperbranched polyamine-ester composite resin for dental restoration with high performance and low shrinkage, the specific process is as follows:

[0065] (1) Preparation of silanized inorganic filler:

[0066] The silanized inorganic filler is prepared by surface modification of the inorganic filler. The specific modification treatment method is: add 50g of the inorganic filler to 600mL of cyclohexane, and the inorganic filler is micron silica (particle size 1.2μm) and nano-silica (particle size: 40nm); then stirred and reacted in an oil bath at 30°C for 15min, and then added 5.5mL of n-propylamine and 3.3mL of γ-(methacryloyloxy)propyl Trimethyloxysilane, stirred and reacted at 60°C for 20min. During the reaction, the stirring speed was kept at 700r / min; Dry in a vacuum oven for 24 hours to obtain a silanized inorganic filler.

[0067] (2) Preparation of modified hyperbranched polyamine-ester:

[0068] (1) Mix trimethylolpropane, N,N-dihydro...

Embodiment 3

[0079] A preparation method of hyperbranched polyamine-ester composite resin for dental restoration with high performance and low shrinkage, the specific process is as follows:

[0080] (1) Preparation of silanized inorganic filler:

[0081] The silanized inorganic filler is prepared by surface modification of the inorganic filler. The specific modification treatment method is: add 50g of the inorganic filler to 600mL of cyclohexane, and the inorganic filler is micron silica (particle size 1μm) and nano-silica (particle size: 50nm); then stirred and reacted in an oil bath at 30°C for 10min, then added 5.5mL of n-propylamine and 3.3mL of γ-(methacryloyloxy)propyltri Methyloxysilane, stirred and reacted at 60°C for 30min. During the reaction, the stirring speed was kept at 600r / min; Dry in an oven for 24 hours to obtain a silanized inorganic filler.

[0082] (2) Preparation of modified hyperbranched polyamine-ester:

[0083] (1) Mix trimethylolpropane, N,N-dihydroxyethyl-3-am...

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Abstract

The invention relates to preparation of a high-performance low-shrinkage hyperbranched polyamine-ester composite resin for dental repair. The high-performance low-shrinkage hyperbranched polyamine-ester composite resin for dental repair is prepared by mixing modified hyperbranched polyamine-ester with a general-purpose resin monomer, a photoinitiator and a silanized inorganic filler, wherein the modified hyperbranched polyamine-ester is obtained by reacting hyperbranched polyamine-ester with a modifier, the modifier is hydroxyethyl methylacrylate and 2, 4-toluene diisocyanate, and the general-purpose resin is bisphenol A-glycidyl dimethacrylate, carbamate dimethacrylate and triethylene glycol dimethacrylate. According to the invention, the prepared composite resin has excellent mechanical strength, bending strength, bending modulus and compression strength which are respectively 108.52 to 124.20 MPa, 8.6 to 9.37 GPa and 301.5 to 373.34 MPa; and the hyperbranched monomer containing double bonds and benzene rings and low in viscosity is prepared and added into a traditional organic matrix, so that the polymerization shrinkage rate of the composite resin material during curing is effectively reduced, and the polymerization shrinkage rate is 1.9-2.84%.

Description

technical field [0001] The invention belongs to the technical field of preparation of materials for dental restoration, and relates to a preparation method of a hyperbranched polyamine-ester composite resin for dental restoration with high performance and low shrinkage rate. Background technique [0002] Caries is one of the three major non-genetic diseases in the world. As the most common oral disease, it not only directly affects the facial appearance and chewing function of patients, but also causes serious systemic and non-infectious chronic diseases. The treatment and restoration of the disease has become extremely important. The current method of caries treatment is mainly direct filling and repairing, and the core of restorative treatment is the restorative material used. Since the advent of bisphenol A-glycidyl methacrylate (Bis-GMA), resin-based repair materials have gradually replaced traditional repair materials due to their excellent physical-mechanical properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08G83/00C08F222/22C08F222/20C08K9/06C08K3/36A61K6/887A61K6/18
CPCC08F290/06C08G83/006C08G83/005C08K9/06C08K3/36A61K6/887A61K6/18C08K2201/011C08K2201/003C08F222/22C08F222/20C08F222/102C08L51/08
Inventor 江晓泽朱美芳沈君任志伟汪丹越曹林杰王康妮王瑞莉孙宾
Owner DONGHUA UNIV
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