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KMID : 0362220120390020137
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Journal of The Korean Research Society for Dental Materials
2012 Volume.39 No. 2 p.137 ~ p.144
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Development and Evaluation of Dual-Cured Core Resins
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Kim Hyoung-Sik
Song Bu-Seok
Choi Kyo-Chang
Lee Yong-Keun
Kim Kyoung-Nam
Kim Kwang-Mahn
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Abstract
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The aims of this study were to evaluate the material properties of the recently developed dual-cured core
resin (Experimental product, EP, Meta Biomed Inc., Cheong-won-gun, Korea) and to compare it with other
commercial products (LuxaCoreⓡ-Dual, DMG, Hamburg, Germany; MultiCoreⓡ flow, Ivoclar Vivadent,
Liechtenstein). Flexural strength and radio-opacity were tested according to ISO 4049 and surface
micro-hardness, fluoride release, and cuttability were also evaluated. The data were analyzed with one-way
ANOVA and independent t-test(p=0.05) using PASW 17.0 (SPSS Inc., Chicago, U.S.A.). The flexural strength
of EP was higher than LuxaCore in both light-curing and self-curing methods(p<0.05). The flexural
strength of EP was not significantly different between light-curing and self-curing method(p>0.05). The EP
showed the lowest surface micro-hardness among the test groups(p<0.05). For fluoride release, EP was
higher than MultiCore(p<0.05). There was no significant difference between EP and LuxaCore(p>0.05). The
radio-opacity of EP was higher than LuxaCore(p<0.05). There was no significant difference between EP and
MultiCore(p>0.05). The cuttability of EP had no significant differences among the groups(p>0.05). From the
results of this study, EP is a suitable material to be used in clinical fields as a core material.
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KEYWORD
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core resin, cuttability, flexural strength, fluoride release, radio-opacity, surface micro-hardness
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