Currently, endodontics has significant advances when talking about the pain management and the control of the time procedure, carrying out the treatments that before took 2 or 3 appointments to one session of 45 minutes or an hour. This, thanks to the improvement of the visiography, the use of the apical localizer to determine the exact longitude of the root canal- minimizing the operators mistakes-, biosonic instrumentation of the root canal, and computerized media for the surgical procedures that encloses this specialty.