Visible light hardened filling composite material for dental filling and its preparing method

A composite material and visible light technology, applied in dental preparations, dentistry, pharmaceutical formulations, etc., can solve the problems of low mechanical properties, reduced usability, unsatisfactory initiation rate, etc., and achieve the effect of no biotoxicity and good biocompatibility

Inactive Publication Date: 2007-01-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the cured products obtained by these two methods are lower than those of the cured products obtained by using tertiary amines as co-initiators, resulting in reduced performance; in addition, the initiation rate is not ideal.

Method used

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  • Visible light hardened filling composite material for dental filling and its preparing method
  • Visible light hardened filling composite material for dental filling and its preparing method
  • Visible light hardened filling composite material for dental filling and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] Dissolve 0.3771g photoinitiator aryl diketone (CQ) in 18.62g triethylene glycol dimethacrylate (TrEGDMA), mix with 56.85g bisphenol A glycidyl methacrylate (BISGMA) to prepare BISGMA / The proportioning ratio of TrEGDMA is 75wt%: 25wt%, and the organic resin system (I) with a CQ content of 0.5wt% is fully stirred to make the system evenly mixed, and placed in a dark room for subsequent use.

[0025] Take by weighing 3,4-methylenedioxybenzyl alcohol (piperol) shown in 0.1203g general formula (1) in a 25mL beaker, then add 12.0014g organic resin system (I) wherein, mix homogeneously, obtain Organic resin mixture containing 1.0 wt% piperonol. Then in this system, add the fumed silica filler AEROSIL R 711 (DEGUSSA company of Germany) 1.0116g (volume content is 40% of the mixture total amount) with the average particle size of 12 nanometers and the fumed silica with the average particle diameter of 7 nanometers Filler AEROSIL R 202 (Germany DEGUSSA company) 0.04864g (volume ...

example 2

[0027]Dissolve 0.9126g photoinitiator aryl diketone (CQ) in 36.50g tetraethylene glycol dimethacrylate (TTEGDMA), mix with 54.73g urethane dimethacrylate (UDMA) to prepare UDMA / The proportion of TTEGDMA is 60wt%: 40wt%, and the organic resin system (II) with a CQ content of 1.0wt%, is fully stirred to make the system evenly mixed, and placed in a dark room for later use.

[0028] Get 0.0105g of 3,4-methylenedioxybenzoic acid (piperic acid) shown in general formula (2) in a 25mL beaker, then add 10.2013g of organic resin system (II) to it, mix uniformly, and obtain 0.1 wt% piperic acid in organic resin mixture. Adding the fumed silica filler AEROSIL OX 50 (Germany DEGUSSA company) 0.4622g (volume content is 40% of the mixture total amount) and the fumed silica filler that the average particle size is 7 nanometers in this system then A 380 (China Guangzhou City Yirui New Material Co., Ltd.) (volume content is 20% of the mixture total amount) 0.2300g, fully stirred to make it m...

example 3

[0030] Dissolve 0.6678g of photoinitiator aromatic diketone (CQ) in 13.23g of 1,6-hexanediol dimethacrylate (HDDMA), mix with 53.50g of urethane dimethacrylate (UDMA) The organic resin system (III) with a UDMA / HDDMA ratio of 80wt%:20wt% and a CQ content of 0.1wt% was fully stirred to make the system evenly mixed, and placed in a dark room for later use.

[0031] Weigh 3,4-methylenedioxybenzoate methyl ester (methyl piperonate) shown in the general formula (7) of 0.1264g or 3,4-methylene dioxybenzoate shown in the general formula (3) Ethyl oxybenzoate (ethyl piperonate) in a 25mL beaker, then add 6.3327g of organic resin system (III) therein, fully stir to make the system mix uniformly, obtain an organic resin mixture containing 2.0wt% methyl piperonate . Then in this system, add the barium borosilicate glass (U.S. ESSCHEM company) 8.1045g (volume content is 30% of the mixture total amount) and the average particle size of 40 nanometers fumed silica filler AEROSIL OX 50 ( Ger...

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Abstract

The visible light hardened filling composite material for dental filling and its preparation process belongs to the field of dental repair material making technology. The composite material is prepared through mixing polymerisable dimethylacrlyate resin comprising dimethylacrlyate pre-polymer and active dimethylacrlyate diluent, visible light initiator cyclic pepper compound or its derivative, and inorganic filler of quartz and/or glass, and irradiation with visible light. The composite material has the features of high initiating efficiency, high mechanical performance, good use performance, low toxicity and good biocompatibility.

Description

technical field [0001] The invention belongs to the field of dental restorative material manufacturing, and in particular relates to the preparation of visible light-cured filling composite materials for filling teeth. Background technique [0002] Due to the pollution of amalgam to the environment and the side effects on the human body, the traditional dental restoration materials based on amalgam are gradually replaced by visible light-cured filling composite materials. [0003] Visible light-curable filling composite materials are composed of polymerizable monomers, prepolymers (methacrylates), inorganic fillers (quartz or / and glass, etc.), visible light initiators and co-initiators, and other additives. Under the irradiation of visible light, the visible light initiator and co-initiator undergo a series of photochemical reactions to generate free radicals, which then initiate the polymerization of the methacrylate organic phase and form highly crosslinked polymers. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083
Inventor 聂俊史素青
Owner BEIJING UNIV OF CHEM TECH
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