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Relation between Degree of Conversion and Post-Cured Properties of Light Cured Composite Systems Used as Filling Materials

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Abstract:

The composite, based on a polymer matrix such as Bisphenol A glycol dimethacrylate (Bis-GMA), urethane dimethacrylate (UDMA), and triethyleneglycoldimethacrylate (TEGDMA) and a reinforced-ceramic filler has been used in dental restorative materials. The light curing composite consists of Bis-GMA, TEGDMA, UDMA, Bis-GMA/TEGDMA, Bis-GMA/UDMA, or UDMA/TEGDMA polymer systems and a fumed silica filler with 35 weight ratio loading was synthesized using camphorquinone (CQ) and 2-(dimet6hyloamino)ethyl methacrylate (DMAEMA) as an initiator system. FTIR spectroscopy was used to determine the degree of conversion (DC) of the composites. Polymerization shrinkage and physical properties such as hardness strength and flexural strength were correlated with the composites containing different polymer systems.

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Periodical:

Key Engineering Materials (Volumes 334-335)

Pages:

401-404

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.334-335.401

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Online since:

March 2007

Authors:

Weeraw Sunsaneeyametha, Angkhana Jaroenworaluck, Nudthakarn Kosachan, Ron Stevens

Keywords:

Degree of Conversion, Dental Composite Material, Light Curing

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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