A dental composition capable of photoinduced free radical polymerization

A composition and free radical technology, applied in the field of rail transit, to achieve good aesthetic appearance and small volume shrinkage

Inactive Publication Date: 2016-03-02
无锡市万士达羽绒制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, even by using the above-mentioned adhesive for teeth, it may not be possible to achieve ideal adhesion to all teeth

Method used

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  • A dental composition capable of photoinduced free radical polymerization
  • A dental composition capable of photoinduced free radical polymerization
  • A dental composition capable of photoinduced free radical polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 100 parts by weight of polymerized monomer

[0032] (2) 1 part by weight of photoacid generating compound: 1 part by weight of photoinduced free radical generating compound: and 5 parts by weight of fused polycyclic aromatic compounds:

[0033] The shrinkage rate of the dental composition prepared by the above formulation is 0.8% when visible light triggers polymerization.

Embodiment 2

[0035] (1) 100 parts by weight of polymerized monomer

[0036] (2) 1 part by weight of photoacid generating compound: 1 part by weight of photoinduced free radical generating compound: and 5 parts by weight of fused polycyclic aromatic compounds:

[0037] The shrinkage rate of the dental composition prepared by the above formulation is 0.82% when visible light triggers polymerization.

Embodiment 3

[0039] (1) 100 parts by weight of polymerized monomer

[0040] (2) 1 part by weight of photoacid generating compound: 1 part by weight of photoinduced free radical generating compound: and 5 parts by weight of fused polycyclic aromatic compounds:

[0041] The shrinkage rate of the dental composition prepared by the above formulation is 0.83% when visible light triggers polymerization.

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Abstract

A dental composition capable of photoinduced free radical polymerization is disclosed. The composition comprises a photopolymerization initiator and at least one biphenyl dimethacrylate monomer provided with two aromatic rings bonded by C-C bonds. The composition is low in volume shrinkage during visible light induced polymerization so that the composition is free of gaps generated by volume shrinkage due to polymerization.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a system and method for controlling the opening and closing states of platform doors. Background technique [0002] To restore carious or broken teeth, a light-curing filling restorative called synthetic resin is commonly used due to its ease of use and better aesthetic appearance. The aforementioned synthetic resin generally contains a polymerizable monomer, a filler and a polymerization initiator. As a polymerizable monomer, there has been used a (meth)acrylate-based radical polymerizable monomer having good photopolymerizable properties. However, the radically polymerizable monomer can impair its polymerization due to oxygen. Thus, when it polymerizes and solidifies in the oral cavity, the unpolymerized layer remaining on its surface, the ketone polymerization degree layer, becomes discolored or discolored with the lapse of time, making it difficult to obtain a sufficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/087G03F7/027A61K6/891
Inventor 蒋健
Owner 无锡市万士达羽绒制品有限公司
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