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首页> 外文期刊>The European journal of prosthodontics and restorative dentistry >Evaluation of Monomer Leaching from a Resin Cement Through Dentin.
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Evaluation of Monomer Leaching from a Resin Cement Through Dentin.

机译：通过牙本质评价树脂水泥的单体浸出。

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摘要

The aim of the study was to evaluate the elution of Triethylene glycol dimethacrylate (TEGDMA), Urethane dimethacrylate (UDMA), Bisphenol A glycerolate dimethacrylate (BisGMA), and Bisphenol A (BPA), from a dual-cured resin cement through human dentin, under constant positive pulpal pressure. Ten human dentin disks were adjusted into a custom made testing device and transparent glass slabs were luted with Variolink II cement, under a steady pressure. The device was filled with Ringer's solution and a pressure of 14.1 cm H?O was applied. Eluates were retrieved from each one of the ten specimens at 9 time interval. All the samples were analyzed by High Performance Liquid Chromatography (HPLC). TEGDMA was detected from the second and UDMA was detected from the fourth time interval and then. The highest average concentration of TEGDMA and UDMA was detected in the 3 day time interval. Time had a significant effect on their elution. BPA and BisGMA were not detected in any sample of any time interval. The clinical relevance of the present study is that the concentration of the eluted monomers, under the conditions that were chosen, did not reach toxic levels for the pulp.
机译：该研究的目的是评估三甘醇二甲基丙烯酸酯（TEGDMA）的洗脱，氨基甲酸酯二甲基丙烯酸酯（UDMA），双酚A甘油酯二甲基丙烯酸酯（Bisgma），以及双固化树脂通过人类牙本质的双固化树脂水泥，在恒定的阳性压力下。将十个人类牙本质盘调节到定制的测试装置中，透明玻璃板在稳定的压力下用Variolink II水泥螯合。该装置填充有振铃液的溶液，施加14.1cm H 2 O的压力。从9个时间间隔从每一个标本中的每一个检索拔壳。通过高效液相色谱（HPLC）分析所有样品。从第四次间隔检测到从第二个和UDMA检测到TEGDMA。在3天时间间隔内检测到TEGDMA和UDMA的最高平均浓度。时间对他们的洗脱产生了重大影响。在任何时间间隔的任何样品中未检测到BPA和Bisgma。本研究的临床相关性是，在所选择的条件下，洗脱单体的浓度没有达到纸浆的毒性水平。

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