Khalil Issam, Naaman Alfred, Camilleri Josette
Department of Endodontics, Saint Joseph University, Beirut, Lebanon.
Department of Endodontics, Saint Joseph University, Beirut, Lebanon.
J Endod. 2016 Oct;42(10):1529-35. doi: 10.1016/j.joen.2016.06.002. Epub 2016 Aug 11.
Sealers based on tricalcium silicate cement aim at an interaction of the sealer with the root canal wall, alkalinity with potential antimicrobial activity, and the ability to set in a wet field. The aim of this study was to characterize and investigate the properties of a new tricalcium silicate-based sealer and verify its compliance to ISO 6876 (2012).
A new tricalcium silicate-based sealer (Bio MM; St Joseph University, Beirut, Lebanon), BioRoot RCS (Septodont, St Maure de Fosses, France), and AH Plus (Dentsply, DeTrey, Konstanz, Germany) were investigated. Characterization using scanning electron microscopy, energy-dispersive spectroscopy, and X-ray diffraction analysis was performed. Furthermore, sealer setting time, flow, film thickness, and radiopacity were performed following ISO specifications. pH and ion leaching in solution were assessed by pH analysis and inductively coupled plasma.
Bio MM and BioRoot RCS were both composed of tricalcium silicate and tantalum oxide in Bio MM and zirconium oxide in BioRoot RCS. In addition, the Bio MM contained calcium carbonate and a phosphate phase. The inorganic components of AH Plus were calcium tungstate and zirconium oxide. AH Plus complied with the ISO norms for both flow and film thickness. BioRoot RCS and Bio MM exhibited a lower flow and a higher film thickness than that specified for sealer cements in ISO 6876. All test sealers exhibited adequate radiopacity.
Bio MM interacted with physiologic solution, thus showing potential for bioactivity. Sealer properties were acceptable and comparable with other sealers available clinically.
基于硅酸三钙水泥的封闭剂旨在实现封闭剂与根管壁的相互作用、具有潜在抗菌活性的碱性以及在潮湿环境中凝固的能力。本研究的目的是表征和研究一种新型硅酸三钙基封闭剂的性能，并验证其是否符合ISO 6876（2012）标准。
对一种新型硅酸三钙基封闭剂（Bio MM；黎巴嫩贝鲁特圣约瑟夫大学）、BioRoot RCS（法国圣莫尔德福塞Septodont公司）和AH Plus（德国康斯坦茨登士柏DeTrey公司）进行了研究。使用扫描电子显微镜、能量色散光谱和X射线衍射分析进行表征。此外，按照ISO规范进行了封闭剂凝固时间、流动性、薄膜厚度和射线不透性测试。通过pH分析和电感耦合等离子体评估溶液中的pH值和离子浸出情况。
Bio MM和BioRoot RCS均由硅酸三钙组成，Bio MM中含有氧化钽，BioRoot RCS中含有氧化锆。此外，Bio MM还含有碳酸钙和磷酸盐相。AH Plus的无机成分是钨酸钙和氧化锆。AH Plus在流动性和薄膜厚度方面符合ISO标准。BioRoot RCS和Bio MM的流动性低于ISO 6876中规定的封闭剂水泥，薄膜厚度更高。所有测试封闭剂均表现出足够的射线不透性。
Bio MM与生理溶液相互作用，因此显示出生物活性潜力。封闭剂性能可接受，与临床上其他可用封闭剂相当。
