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.
CN113174020AActive Publication Date: 2021-07-27DONGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2021-07-27

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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%.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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