The Mtwo system was designed and launched on the market some 15 years ago, and since then there has been a ceaseless finding of new ways to use it, both by increasing its role in root canal preparation and by simplifying and making it increasingly safe to use.
By now an extraordinary role of the 10/.04 instrument is consolidated in the initial phase of root canal treatment (scouting), during which the need to use steel instruments has become really rare and confined to some retreatment cases; there are several ways of benefiting from the positive characteristics of this instrument in the different clinical cases, by varying the depth of advancement and the rotational speed.
Rotational speed with the Mtwo system can be varied depending on the complexity of the case, on the preparation phase and also on the operator’s skills; the instrument remains effective also if the rotational speed is decreased significantly, thereby allowing maximum control and complete safety. The possibility of determining the preparation and cleaning standards simply by observing the material (dentin, blood or necrotic material) that remains in the sulcus of the instruments is another peculiarity strictly related to the way in which the Mtwo work; together with proper compliance with the other preparation rules this possibility allows to complete the fit-to-size preparation of every canal.
