Preparation of Hyperbranched Polyamine-Ester Flow Resin for Low-shrinkage Non-bis-gma-based Dental Restoration

A hyperbranched polymer-based dental technology, applied in the field of preparation of dental restoration materials, can solve the problems of increased polymerization shrinkage of the total content, no further exploration, etc., to achieve reduced polymerization shrinkage, excellent fluidity, and easy clinical The effect of the operation

Active Publication Date: 2022-07-12
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such a method achieves the repair of defects, it will inevitably bring new problems: the increase in the total content of organic monomers will cause a large increase in the polymerization shrinkage after polymerization.
At present, this kind of research mainly focuses on the general-purpose composite resin system, or only introduces hyperbranched molecules as one of the components of the organic monomer into the flow resin system to explore its influence on the performance of the flow resin, and has not been further explored. Using hyperbranched molecules as the main organic monomer components to completely replace Bis-GMA to achieve ultra-low polymerization shrinkage and Bis-GMA-free dental restoration flow resin

Method used

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  • Preparation of Hyperbranched Polyamine-Ester Flow Resin for Low-shrinkage Non-bis-gma-based Dental Restoration
  • Preparation of Hyperbranched Polyamine-Ester Flow Resin for Low-shrinkage Non-bis-gma-based Dental Restoration
  • Preparation of Hyperbranched Polyamine-Ester Flow Resin for Low-shrinkage Non-bis-gma-based Dental Restoration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation method of hyperbranched polyamine-ester flow resin for dental restoration with low shrinkage without Bis-GMA base, the specific process is as follows:

[0049] (1) Preparation of silanized inorganic fillers:

[0050] The inorganic filler is prepared by surface modification treatment. The specific method of surface modification treatment is as follows: add 50 g of inorganic filler to 600 mL of cyclohexane, stir and react in an oil bath at 40 °C for 20 min, and then add 5.5 mL of n-propylamine and 3.3 mL of n-propylamine in turn. mLγ-(methacryloyloxy)propyltrimethyloxysilane was stirred at 70 °C for 20 min. During the reaction, the stirring speed was always maintained at 650 r / min; Rinse with ethanol for several times, filter, and then dry in a vacuum oven at 60 °C for 24 h to obtain silanized inorganic filler;

[0051] Wherein, the inorganic filler is a mixture of micro-silica (particle size of 1 μm) and nano-silica (particle size of 20 nm) with a weight...

Embodiment 2

[0063] The preparation method of hyperbranched polyamine-ester flow resin for dental restoration with low shrinkage without Bis-GMA base, the specific process is as follows:

[0064] (1) Preparation of silanized inorganic fillers:

[0065] The inorganic filler is prepared by surface modification treatment. The specific method of surface modification treatment is as follows: add 50 g of inorganic filler to 600 mL of cyclohexane, stir and react in an oil bath at 40°C for 20 min, and then add 5.5 mL of n-propylamine and 3.3 mL of n-propylamine in turn. mLγ-(methacryloyloxy)propyltrimethyloxysilane was stirred and reacted at 70°C for 20min. During the reaction, the stirring speed was always maintained at 650r / min; Rinse with ethanol for several times, filter, and then dry in a vacuum oven at 60 °C for 24 h to obtain silanized inorganic filler;

[0066] Wherein, the inorganic filler is a mixture of micro-silica (particle size of 1 μm) and nano-silica (particle size of 20 nm) with ...

Embodiment 3

[0083] The preparation method of hyperbranched polyamine-ester flow resin for dental restoration with low shrinkage without Bis-GMA base, the specific process is as follows:

[0084] (1) Preparation of silanized inorganic fillers:

[0085] The inorganic filler is prepared by surface modification treatment. The specific method of surface modification treatment is as follows: add 50 g of inorganic filler to 600 mL of cyclohexane, stir and react in an oil bath at 30°C for 20 min, and then add 5.5 mL of n-propylamine and 3.3 mL of n-propylamine in turn. mL vinyltriethoxysilane was stirred at 60 °C for 30 min. During the reaction, the stirring speed was always kept at 650 r / min; the product was rotary-evaporated under reduced pressure, washed with n-hexane and ethanol for several times, filtered, and then Dry in a vacuum oven at 60°C for 24h to obtain silanized inorganic fillers;

[0086] Wherein, the inorganic filler is a mixture of micro-silica (particle size of 2 μm) and nano-s...

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Abstract

The invention relates to the preparation of a low-shrinkage non-Bis-GMA-based dental repair hyperbranched polyurethane-ester flow resin. 2 Type branched monomers and catalysts are mixed, polyol is used as the core, and a quasi-one-step polycondensation method is used to prepare polyhydroxy hyperbranched polyamine-ester (HPAE); Modified hyperbranched polyamine-ester molecule, mixed with diluent, silanized inorganic filler and photoinitiator uniformly by three-roll mill to obtain uncured, flowable, low polymerization shrinkage and no Bis-GMA Flow resin for dental restorations with organic components. The flowable resin prepared by the present invention has low viscosity and good fluidity before photocuring, can greatly reduce the polymerization shrinkage rate of the composite resin material after photocuring, and does not have the potential toxicity problem caused by the release of bisphenol A, and is expected to It can effectively meet the needs of some small defects that are difficult to fill, the restoration and treatment of small caries in the maxillofacial area and narrower areas in preventive restoration.

Description

technical field [0001] The invention belongs to the technical field of preparation of dental restoration materials, and relates to the preparation of a low-shrinkage non-Bis-GMA-based dental restoration hyperbranched polyurethane-ester flow resin. Background technique [0002] With the improvement of civilization, caries, as the most common oral disease, not only directly affects the patient's facial appearance and chewing function, but also causes serious systemic, non-infectious chronic diseases, so its treatment and restoration have changed. be extremely important. The main method of caries treatment at present is direct filling and repair, and the core of repair treatment is the repair material used. With the rapid development of material technology, this type of restoration material has developed from the early silver amalgam to the current mainstream general-purpose dental restoration composite resin. Studies have fully confirmed that this type of restoration material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F222/20C08K9/06C08K3/36A61K6/887
CPCC08F283/002C08K9/06C08K3/36A61K6/887C08K2201/014C08F222/102
Inventor 江晓泽朱美芳沈君任志伟陆梦娇李启明王瑞莉孙宾
Owner DONGHUA UNIV
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