Degree of conversion of two dual-cured resin cements light-irradiated through zirconia ceramic disks

The aim of this Fourier transform infrared (FTIR) spectroscopic study was to measure the degree of conversion (DC) of dual-cured resin cements light-irradiated through zirconia ceramic disks with different thicknesses using various light-curing methods. Zirconia ceramic disks (KT12) with three diffe...

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Published in:The journal of advanced prosthodontics 2013-11, Vol.5 (4), p.464-470
Main Authors: Kim, Min-Jeong, Kim, Kyo-Han, Kim, Young-Kyung, Kwon, Tae-Yub
Format: Article
Language:English
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Summary:The aim of this Fourier transform infrared (FTIR) spectroscopic study was to measure the degree of conversion (DC) of dual-cured resin cements light-irradiated through zirconia ceramic disks with different thicknesses using various light-curing methods. Zirconia ceramic disks (KT12) with three different thicknesses (1.0, 2.0, and 4.0 mm) were prepared. The light transmittance of the disks was measured using ultraviolet visible near-infrared spectroscopy. Four different light-curing protocols were used by combining two curing light modes (Elipar TriLight (standard mode) and bluephase G2 (high power mode)) with light-exposure times of 40 and 120 seconds. The DCs of the two dual-cured resin cements (Duo-Link and Panavia F2.0) light-irradiated through the disks was analyzed at three time intervals (3, 7, and 10 minutes) by FTIR spectroscopy. The data was analyzed using repeated measures ANOVA (α=.05).Two-way ANOVA and Tukey post hoc test were used to analyze the 10 minute DC results. The 1.0 mm thick disk exhibited low light transmittance (
ISSN:2005-7806
2005-7814
DOI:10.4047/jap.2013.5.4.464