Schäfer Edgar, Bering Nele, Bürklein Sebastian
Central Interdisciplinary Ambulance in the School of Dentistry, University of Münster, Münster, Germany,
Odontology. 2015 Jan;103(1):61-5. doi: 10.1007/s10266-013-0137-y. Epub 2013 Oct 17.
The aim of this laboratory study was to assess selected physicochemical properties of three root canal sealers. The solubility, setting time and radiopacity of AH Plus, EndoREZ and RealSeal SE were evaluated. The solubility was determined by weight loss of specimens in water over a period of 28 days. Setting time and radiopacity were assessed according to ANSI/ADA and ISO specifications using an aluminum step wedge calibrated in millimeters and the intendention test using a Gilmore needle. Data were analyzed using ANOVA and the Student-Newman-Keuls test for pairwise comparisons. AH Plus was significantly less soluble, showed the significantly highest radiopacity and displayed the significantly longest setting time of all sealers (P < 0.01). At all exposure times, EndoREZ was significantly more soluble than the other sealers (P < 0.01) and displayed the significantly lowest values regarding radiopacity (P < 0.01). Analysis showed that setting time and radiopacity for all sealers met the ANSI/ADA and ISO standards. Solubility of AH Plus and RealSeal confirmed the ANSI/ADA and ISO specification, while EndoREZ clearly exceeded the proposed solubility value. Out of all sealers tested, AH Plus obtained the best values for all properties.
本实验室研究的目的是评估三种根管封闭剂的选定物理化学性质。对AH Plus、EndoREZ和RealSeal SE的溶解度、凝固时间和射线不透性进行了评估。溶解度通过标本在水中28天的重量损失来确定。凝固时间和射线不透性根据ANSI/ADA和ISO规范进行评估，使用以毫米校准的铝阶梯楔和使用吉尔摩针的针入度试验。数据使用方差分析和Student-Newman-Keuls检验进行成对比较分析。在所有封闭剂中，AH Plus的溶解度显著更低，射线不透性显著最高，凝固时间显著最长（P < 0.01）。在所有暴露时间，EndoREZ的溶解度均显著高于其他封闭剂（P < 0.01），并且在射线不透性方面显示出显著最低的值（P < 0.01）。分析表明，所有封闭剂的凝固时间和射线不透性均符合ANSI/ADA和ISO标准。AH Plus和RealSeal的溶解度符合ANSI/ADA和ISO规范，而EndoREZ明显超过了建议的溶解度值。在所有测试的封闭剂中，AH Plus在所有性能方面均获得了最佳值。
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