Water sorption and solubility of methacrylate resin - based root canal sealers
Water sorption and solubility of methacrylate resin - based root canal sealers
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DOI：
10.1016/j.joen.2006.03.021
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发表时间：
2007-08-01
影响因子：
4.2
通讯作者：
Pashley, David H.
中科院分区：
文献类型：
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作者：
Donnelly, Adam;Sword, Jeremy;Pashley, David H.
将三种当代基于甲基丙烯酸酯树脂的牙髓封闭剂 EndoREZ、Epiphany 和 InnoEndo 的吸水性和溶解度特性与 Kerr EWT、Ketac-Endo（阳性对照）、GuttaFlow 和 AH Plus（均为阴性对照）获得的吸水性和溶解度特性进行了比较。每种材料的 10 个圆盘在 Drierite 中脱水 24 小时并称重至恒定干质量。将它们放入水中并定期称重，直至获得最大的吸水量。将圆盘再次脱水以确定其平衡时的质量损失（溶解度）。 Epiphany 表现出最高的表观吸水率 (8%)，其次是 Ketac-Endo (6.2%)、InnoEndo (3.4%)、EndoREZ (3.0%)、AH Plus (1.1%)、GuttaFlow (0.4%) 和 Kerr EWT (0.3%)。与 Ketac-Endo (1.6%)、AH Plus (0.16%) 和 GuttaFlow (0.13%) 相比，所有三种基于甲基丙烯酸酯树脂的密封剂和 Kerr EWT (3.95%) 的溶解度均显着提高 (3.5-4%)。美国牙科协会规范要求
The water sorption and solubility characteristics of three contemporary methacrylate resin-based endodontic sealers, EndoREZ, Epiphany, and InnoEndo, were compared with those obtained from Kerr EWT, Ketac-Endo (positive control), GuttaFlow, and AH Plus (both negative controls). Ten disks of each material were dehydrated in Drierite for 24 h and weighed to constant dry mass. They were placed in water and weighed periodically until maximum water sorption was obtained. The disks were dehydrated again to determine their mass loss (solubility) at equilibrium. Epiphany exhibited the highest apparent water sorption (8%) followed by Ketac-Endo (6.2%), InnoEndo (3.4%), EndoREZ (3.0%), AH Plus (1.1%), GuttaFlow (0.4%), and Kerr EWT (0.3%). Significantly higher solubility (3.5-4%) were observed for all three methacrylate resin-based sealers and Kerr EWT (3.95%), compared with Ketac-Endo (1.6%), AH Plus (0.16%), and GuttaFlow (0.13%). American Dental Association specifications require