Abstract
The Mineral Trioxide Aggregate (MTA) presents on the basic composition Portland cement (PC). The association of zirconium oxide (OZ) or niobium oxide (iNO) as micro or nanoparticle substeances to CP can provide radiopacity and biological activity. It is important to analyze its properties. The aim of this study is to evaluate the radiopacity, the release of hydroxyl ions and antimicrobial…