Uso do MTA no tratamento endodôntico radical de dentes com rizogênese incompleta: estudo de casos

Abstract

Currently the apexification technique using calcium hydroxide has beendiscussed among endodontists as a treatment that requires a long period of time - sometimes years - dedication and willingness from the part of the patient. Severalstudies demonstrated that the use of Mineral Trioxide Aggregate (MTA) was introduced in order to reduce the long time spent in the treatment of open apex teeth. Therefore it aimed at minimizing the chances of undesirable root fractures, preventing contamination and providing hermetic sealing of the root canal system.This monograph presents seven cases where the MTA was used as apical barrier in permanent teeth with incomplete root formation and opened apex, which developed irreversible pulpal changes and received endodontic treatment. In all cases, the MTAoffered enough resistance when placed apically, so that the conventional root canal filling was performed on the medial and coronal parts of the root, without theoccurrence of leakage of the sealer or gutta percha in any of the treated teeth. In the present study the MTA was successfully applied in five cases, when used in teeth with necrotic pulp and incomplete root formation. Only two cases with extensive periapical radiolucency had leakage of the MTA during the insertion.