通过高效液相色谱法评估四种树脂水门汀中TEGDMA的浸出情况。
Evaluation of TEGDMA leaching from four resin cements by HPLC.
作者信息
Altintas Subutay Han, Usumez Aslihan
机构信息
Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, TURKIYE.
出版信息
Eur J Dent. 2012 Jul;6(3):255-62.
OBJECTIVE
The aim of this study was to evaluate the elution of TEGDMA from dual cured resin cements, used for bonding of ceramic restoration by high performance liquid chromatography (HPLC).
METHODS
Forty freshly extracted caries and restoration free molar teeth used in this study. Standardized Class I preparations were prepared in all teeth. Ceramic inlays were cemented with one of the dual cured resin cements (Variolink II, Rely X ARC, Rely X Unicem and Resilute). After cementation, specimens were stored in 75% ethanol solution. HPLC was used to analyze the amounts of TEGDMA in different time intervals. Two-way ANOVA and Tukey HSD tests were used to evaluate the results (P<.05).
RESULTS
The amount of TEGDMA eluted from Resilute was the highest and the amount of TEG-DMA eluted from Rely X Unicem was the lowest (P<.05). The total amount of monomers was the highest after 21 days (P<.05).
CONCLUSION
In the case of resin cements, elution of TEGDMA was the highest in Resilute and lowest in Rely X Unicem. The amount of TEGDMA eluted from resin cements was influenced by the time.
目的
本研究旨在通过高效液相色谱法（HPLC）评估用于陶瓷修复体粘结的双固化树脂水门汀中TEGDMA的洗脱情况。
方法
本研究使用40颗新拔除的无龋损和修复体的磨牙。所有牙齿均制备标准化的I类洞型。用一种双固化树脂水门汀（Variolink II、Rely X ARC、Rely X Unicem和Resilute）粘结陶瓷嵌体。粘结后，将标本储存在75%乙醇溶液中。使用HPLC分析不同时间间隔内TEGDMA的含量。采用双向方差分析和Tukey HSD检验评估结果（P<0.05）。
结果
从Resilute中洗脱的TEGDMA量最高，从Rely X Unicem中洗脱的TEGDMA量最低（P<0.05）。21天后单体总量最高（P<0.05）。
结论
对于树脂水门汀，Resilute中TEGDMA的洗脱量最高，Rely X Unicem中最低。树脂水门汀中TEGDMA的洗脱量受时间影响。
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