Coaguila-Llerena Hernán, Ochoa-Rodriguez Victor Manuel, Castro-Núñez Gabriela Mariana, Faria Gisele, Guerreiro-Tanomaru Juliane Maria, Tanomaru-Filho Mario
Department of Restorative Dentistry, School of Dentistry, UNESP - Universidade Estadual Paulista, Araraquara, SP, Brazil.
Braz Dent J. 2020 Sep-Oct;31(5):511-515. doi: 10.1590/0103-6440202003163.
This study aimed to assess the physicochemical properties of a repair material in the Brazilian market, BioMTA, in comparison to other two materials currently in use (Biodentine and MTA Angelus). The initial setting time was evaluated using Gillmore needle. The pH was measured with a pH-meter after 24 h, 3, 7, 14 and 21 days. The radiopacity was determined using the equivalence in millimeters of aluminum (mm Al) from digitized occlusal radiographs. Solubility was determined after immersion in water for 7 days. The data were analyzed by one-way ANOVA and Tukey tests (a=0.05). The BioMTA initial setting time (5.2 min) was lower than the other materials (p<0.05). All materials showed an alkaline pH at 21 days. At 24 h, BioMTA was the most alkaline material (p<0.05); and at 3, 7, 14 and 21 days there was no difference between BioMTA and Biodentine (p>0.05), both being more alkaline than MTA Angelus (p<0.05). The radiopacity of BioMTA (4.2 mm Al) was significantly higher compared to Biodentine (p<0.05) and lower than MTA Angelus (p<0.05). The solubility of the materials was -4.2%, -1.6% and 4.1% for BioMTA, MTA Angelus and Biodentine, respectively, with a significant difference between them (p<0.05). Therefore, it can be concluded that BioMTA displayed a shorter setting time, an alkaline pH, a higher radiopacity, and a gain in mass.
本研究旨在评估巴西市场上一种修复材料BioMTA的理化性质，并与目前正在使用的其他两种材料（Biodentine和MTA Angelus）进行比较。使用吉尔摩针评估初始凝固时间。在24小时、3天、7天、14天和21天后，用pH计测量pH值。使用数字化咬合X光片上铝的毫米当量（mm Al）确定射线不透性。将材料在水中浸泡7天后测定溶解度。数据通过单向方差分析和Tukey检验进行分析（α = 0.05）。BioMTA的初始凝固时间（5.2分钟）低于其他材料（p<0.05）。所有材料在21天时均显示碱性pH值。在24小时时，BioMTA是碱性最强的材料（p<0.05）；在3天、7天、14天和21天时，BioMTA和Biodentine之间没有差异（p>0.05），两者的碱性均高于MTA Angelus（p<0.05）。BioMTA的射线不透性（4.2 mm Al）与Biodentine相比显著更高（p<0.05）且低于MTA Angelus（p<0.05）。BioMTA、MTA Angelus和Biodentine材料的溶解度分别为-4.2%、-1.6%和4.1%，它们之间存在显著差异（p<0.05）。因此，可以得出结论，BioMTA显示出较短的凝固时间、碱性pH值、较高的射线不透性和质量增加。
