Mtwo instruments are available with different working part lengths. In the basic sequence, there are instruments with working part 16 mm and 21 mm. Instruments with a working part of 21 mm do not have any depth markings.
While preparing the root canal, the instrument removes obstructions in the pulp chamber without unnecessarily weakening the tooth substance. Mtwo instruments have an s-shaped cross-section and two efficient cutting edges. In addition, Mtwo is designed with minimum radial contact as well as large and deep flutes for continuous upwards evacuation of dentine chips.
The instrument core is designed for maximum flexibility, however, without compromising the instrument's strength.
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