Bravo Eslava Luis Manuel, Gallardo Gutiérrez César Antonio
División de Carielogía y Endodoncia de la Carrera de Odontología, Universidad Científica del Sur. Lima, Perú.
Rev Cient Odontol (Lima). 2021 Mar 11;9(1):e043. doi: 10.21142/2523-2754-0901-2021-043. eCollection 2021 Jan-Mar.
The purpose of this study was to compare the porosity characteristics of Portland cement, mineral trioxide aggregate (MTA) Angelus® and Biodentine Septodont® by scanning electron microscopy.
Cements were prepared according to the manufacturer's instructions and packed in cylindrical polyethylene tubes with an internal diameter of 10 mm and a height of 5 mm. The porosity of the samples was analyzed using scanning electron microscopy. Statistical analyses were performed using the Kruskall Wallis test. The level of significance was established at 0.05.
The largest size mean diameter valus was found with Portland cement (11.07). There were significant differences between the mean pore diameters (p = 0.05). MTA Angelus® had the largest number of pores, followed by Biodentine Septodont®, and finally, Portland. There were no significant differences in the pores of the three cements (p = 0.09).
The results of this comparative analysis of endodontic cements showed that Portland cement has a larger pore diameter than MTA Angelus® and Biodentine Septodont®, demonstrating that these latter two cements present better resistance and permeability properties, and thereby prevent microleakage.
本研究旨在通过扫描电子显微镜比较波特兰水泥、三氧化矿物凝聚体（MTA）Angelus®和碧兰齿科修复材料Biodentine Septodont®的孔隙率特征。
按照制造商说明制备水泥，并装入内径10毫米、高5毫米的圆柱形聚乙烯管中。使用扫描电子显微镜分析样品的孔隙率。采用克鲁斯卡尔-沃利斯检验进行统计分析。显著性水平设定为0.05。
波特兰水泥的平均孔径最大（11.07）。平均孔径之间存在显著差异（p = 0.05）。MTA Angelus®的孔隙数量最多，其次是碧兰齿科修复材料Biodentine Septodont®，最后是波特兰水泥。三种水泥的孔隙率无显著差异（p = 0.09）。
本次牙髓水泥对比分析结果表明，波特兰水泥的孔径大于MTA Angelus®和碧兰齿科修复材料Biodentine Septodont®，这表明后两种水泥具有更好的抗渗性和渗透性，从而防止微渗漏。
