Medidenta’s REVO-S™ is a customized 3-instrument endodontic instrumentation sequence for most root canal anatomies that provides safety with simplicity. The asymmetrical instrument design of Revo-S facilitates canal penetration with exceptional cutting and upward debris removal, while providing greater flexibility to negotiate curves. Enables a better root canal penetration due to a "snake-like" movement = better progression of the instrument toward the apical region of the root canal. Facilitates the elimination of debris upward the coronal thanks to the increased available volume for debris. Avoids the grooves to be obstructed and thus avoids the extrusion of debris beyond the instrument tip and apical foramen. Reduces the stress on the instrument thanks to the rippling movement of the file along the canal walls, no screwing effect.