Department of Endodontics, School of Dentistry, Oral and Dental Diseases Research Center, Neuroscience Research Center, Iranian Center for Endodontic Research, Kerman University of Medical Sciences, Kerman, Iran.
J Endod. 2010 Jan;36(1):16-27. doi: 10.1016/j.joen.2009.09.006.
An ideal orthograde or retrograde filling material should seal the pathways of communication between the root canal system and its surrounding tissues. It should also be nontoxic, noncarcinogenic, nongenotoxic, biocompatible, insoluble in tissue fluids, and dimensionally stable. Mineral trioxide aggregate (MTA) was developed and recommended initially because existing root-end filling materials did not have these "ideal" characteristics. MTA has also been recommended for pulp capping, pulpotomy, apical barrier formation in teeth with open apexes, repair of root perforations, and root canal filling. Since MTA's introduction in 1993, numerous studies have been published regarding various aspects of this material. The aim of Part I of this literature review is to present investigations regarding the chemical, physical, and antibacterial properties of MTA.
A review of the literature was performed by using electronic and hand-searching methods for the chemical and physical properties and antibacterial activity of MTA from November 1993-September 2009.
There are many published reports regarding the chemical, physical, and antibacterial properties of MTA. Our search showed that MTA is composed of calcium, silica, and bismuth. It has a long setting time, high pH, and low compressive strength. It possesses some antibacterial and antifungal properties, depending on its powder-to-liquid ratio.
MTA is a bioactive material that influences its surrounding environment.
理想的根管充填材料应能密封根管系统与其周围组织之间的连通途径。它还应该是无毒、非致癌、非遗传毒性、生物相容性、不溶于组织液，并且具有尺寸稳定性。矿物三氧化物聚合体（MTA）最初是因为现有的根管封闭材料没有这些“理想”特性而被开发和推荐的。MTA 也被推荐用于牙髓覆盖、牙髓切断术、根尖孔未闭合牙齿的根尖屏障形成、修复根管穿孔以及根管充填。自 1993 年 MTA 问世以来，已经发表了许多关于该材料各个方面的研究。本文第一部分的目的是介绍关于 MTA 的化学、物理和抗菌性能的研究。
通过电子和手工检索的方法，对 1993 年 11 月至 2009 年 9 月期间有关 MTA 的化学、物理和抗菌活性的文献进行了回顾。
有许多关于 MTA 的化学、物理和抗菌性能的已发表报告。我们的检索结果显示，MTA 由钙、硅和铋组成。它具有较长的凝固时间、高 pH 值和较低的抗压强度。它具有一些抗菌和抗真菌特性，这取决于其粉末与液体的比例。
MTA 是一种影响其周围环境的生物活性材料。
