Uyanik Ozgur, Nagas Emre, Kucukkaya Eren Selen, Cehreli Zafer C, Vallittu Pekka K, Lassila Lippo V J
Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
Department of Pediatric Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
Aust Endod J. 2019 Aug;45(2):241-245. doi: 10.1111/aej.12314. Epub 2018 Nov 6.
This study aimed to evaluate and compare the effect of 1% phytic acid as a mixing medium on the setting times and diametral tensile strengths of different calcium silicate-based cements. Specimens for four experimental groups (n = 20/each) were fabricated by mixing ProRoot MTA (Dentsply) and Biodentine (Septodont) powders with their original liquids or with 1% phytic acid. Half of the samples in each group were immediately subjected to setting time tests, whereas the remaining half was subjected to the diametral tensile strength test after 3 weeks. When mixed with their original liquids, the setting time of MTA was significantly longer than that of Biodentine (P < 0.05). When mixed with phytic acid, the initial and final setting times of both test materials significantly decreased (P < 0.05). The diametral tensile strength of Biodentine was significantly greater than that of MTA (P < 0.05). However, phytic acid had no effect on this outcome (P > 0.05).
本研究旨在评估和比较1%植酸作为混合介质对不同硅酸钙基水门汀凝固时间和径向拉伸强度的影响。通过将ProRoot MTA（登士柏公司）和Biodentine（Septodont公司）粉末与它们的原装液体或1%植酸混合，制备了四个实验组的样本（每组n = 20）。每组样本的一半立即进行凝固时间测试，而其余一半在3周后进行径向拉伸强度测试。当与原装液体混合时，MTA的凝固时间显著长于Biodentine（P < 0.05）。当与植酸混合时，两种测试材料的初凝和终凝时间均显著缩短（P < 0.05）。Biodentine的径向拉伸强度显著高于MTA（P < 0.05）。然而，植酸对这一结果没有影响（P > 0.05）。
