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

Journal Key Engineering Materials (Volumes 334 - 335)
Volume Advances in Composite Materials and Structures
Edited by J.K. Kim, D.Z. Wo, L.M. Zhou, H.T. Huang, K.T. Lau and M. Wang
Pages 401-404
DOI 10.4028/www.scientific.net/KEM.334-335.401
Citation Weeraw Sunsaneeyametha et al., 2007, Key Engineering Materials, 334-335, 401
Online since March, 2007
Authors Weeraw Sunsaneeyametha, Angkhana Jaroenworaluck, Nudthakarn Kosachan, Ron Stevens
Keywords Degree of Conversion, Dental Composite Material, Light Curing
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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