Influence of curing method and storage condition on microhardness of dual-cure resin cements.
Influence of curing method and storage condition on microhardness of dual-cure resin cements.
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固化方法和储存条件对双固化树脂水门汀显微硬度的影响
DOI：
10.4012/dmj.24.70
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发表时间：
2005
影响因子：
2.5
通讯作者：
J. Tagami
中科院分区：
文献类型：
--
作者：
R. Shimura;T. Nikaido;M. Yamauti;M. Ikeda;J. Tagami
本研究评价了固化方法和储存条件对双固化树脂水门汀：Panavia F 2.0（PF）和Nexus 2（NX）显微硬度的影响。样品是光固化的（LC）或化学固化在黑暗中（CC）。在干燥室（干燥）或蒸馏水（DW）中储存24小时后，将标本切片并抛光。采用纳米压痕仪（ENT-1100）测量了树脂骨水泥基体的显微硬度。数据（n = 6）用t检验、双因素ANOVA（p < 0.05）和Tukey HSD检验（α = 0.05）进行统计学分析。结果表明，固化方法和贮存条件对显微硬度有显著影响。对于PF和NX，LC呈现出比CC更高的显微硬度，而DW显示出比Dry更高的显微硬度。因此，双固化树脂水门汀在光固化时可达到较高的固化度。此外，当保持在水中时，评价的树脂粘固剂的显微硬度没有降低。
This study evaluated the influence of curing method and storage condition on the microhardness of dual-cure resin cements: Panavia F 2.0 (PF) and Nexus 2 (NX). The specimens were either light-cured (LC) or chemically cured in darkness (CC). After 24 hours of storage in dry chamber (Dry) or distilled water (DW), the specimens were sectioned and polished. The microhardness of resin cement matrix was measured using a nanoindentation tester (ENT-1100). The data (n = 6) were statistically analyzed with t-test, two-way ANOVA (p < 0.05), and Tukey HSD test (alpha = .05). It was found that the factors of curing method and storage condition had significant effect on microhardness. For both PF and NX, LC presented higher microhardness than CC, while DW showed higher microhardness than Dry. In conclusion, dual-cure resin cements could achieve high degree of cure when light-cured. In addition, the microhardness of the resin cements evaluated did not decrease when kept in water.