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http://dx.doi.org/10.5395/JKACD.2011.36.2.132

Effect of curing modes on micro-hardness of dual-cure resin cements  

Lee, Ki-Deok (Department of Conservative Dentistry, Gangneung-Wonju National University College of Dentistry)
Park, Se-Hee (Department of Conservative Dentistry, Gangneung-Wonju National University College of Dentistry)
Kim, Jin-Woo (Department of Conservative Dentistry, Gangneung-Wonju National University College of Dentistry)
Cho, Kyung-Mo (Department of Conservative Dentistry, Gangneung-Wonju National University College of Dentistry)
Publication Information
Restorative Dentistry and Endodontics / v.36, no.2, 2011 , pp. 132-138 More about this Journal
Abstract
Objectives: The purpose of this study was to evaluate curing degree of three dual-cure resin cements with the elapsed time in self-cure and dual-cure mode by means of the repeated measure of micro-hardness. Materials and Methods: Two dual-cure self-adhesive resin cements studied were Maxcem Elite (Kerr), Rely-X Unicem (3M ESPE) and one conventional dual-cure resin cement was Rely-X ARC resin cement (3M ESPE). Twenty specimens for each cements were made in Teflon mould and divided equally by self-cure and dual-cure mode and left in dark, $36^{\circ}C$, 100% relative humidity conditional-micro-hardness was measured at 10 min, 30 min, 1 hr, 3 hr, 6 hr, 12 hr and 24 hr after baseline. The results of micro-hardness value were statistically analyzed using independent samples t-test and one-way ANOVA with multiple comparisons using Scheffe's test. Results: The micro-hardness values were increased with time in every test groups. Dual-cure mode obtained higher micro-hardness value than self-cure mode except after one hour of Maxcem. Self-cured Rely-X Unicem showed lowest value and dual-cured Rely-X Unicem showed highest value in every measuring time. Conclusions: Sufficient light curing to dual-cure resin cements should provided for achieve maximum curing.
Keywords
Curing mode; Dual-cure; Micro-hardness; Resin cement; Self-adhesive;
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Times Cited By KSCI : 3  (Citation Analysis)
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