Comparación de la eficacia de limpieza de los sistemas rotatorios en la desobturación para retratamiento endodóntico : Revisión sistemática.

Abstract

Introduction: Canals retreatment is the procedure to remove obturation materials from the root canal in order to obtain good disinfection, conformation, and obturation. The use of rotary systems is an alternative chosen by the operator, for its safety and effectiveness when removing gutta-percha from the root canal. Objective: To recognize which rotary system is effective by removing gutta-percha in coronal, middle and apical root thirds, ensuring cleaning and disinfection of the root canal. Materials and methods: Study of bibliographic review of 100 articles, according to the inclusion criteria, 42 articles remained. Results: All rotary systems left a greater remnant of guttapercha in the apical third. The Profile system left less remnant in the cervical third, the Mtwo system in the middle third and the Protaper UR in the apical third. The Twisted file system required less time to remove gutta-percha from the root canal. The continuous wave obturation technique was the one that presented the greatest difficulty to be gutta-percha removed. Conclusion: Removal of gutta-percha is essential for successful retreatment. All rotary systems left a remnant of gutta-percha in the root canal and a greater amount in the apical third. The Hyflex NT