Eficácia de protocolos coadjuvantes (XP-ENDO FINISHER E XPENDO FINISHER R) na remoção de material obturador em raízes mesiais de molares inferiores

Abstract

The present study aims to compare the effectiveness of removal of obturator material during endodontic retreatment through different systems. Thus, forty lower molars with mesial roots separated from distal roots and mesial roots separated from each other were selected. After this selection, the roots were endodontically treated and filled with gutta percha and endodontic cement. Subsequently, endodontic retreatment was performed with the aid of the Reciproc system, and after completion, these teeth were randomized into two groups where each received a different instrument for removal of the restorative material: the first group was instrumented with XP-endo Finisher and the second group with XP-endo Finisher R. After all the finalized steps, the samples were analyzed by computerized microtomography, which showed the amount of remaining obturator material, as well as the effectiveness of the format of the root canals regarding the transport and centralization of preparation for each group, thus comparing the results. The percentage of gutta percha removed after the supporting step was 75% for the Xp-finisher and 82% for the XP-finisher R, with no significant differences between groups (p> 0.05). None of the canals was exempt from remaining material, regardless of the instrument used.