Dentsply Protaper Next Rotary Files
The Dentsply Protaper Next Files are rotary endodontic files made of nickel-titanium, used in biomechanical preparation of the root canal system. This Pro Taper Next file system provides various shaping advantages through a variable tapered design on a given file, M-Wire technology, and a unique offset mass of rotation. It is a versatile and flexible system capable of handling a majority of root canal treatments, including complex cases. ProTaper Next Files has been the gold standard in endodontics for many years and has been an effective solution for practitioners.
The ProTaper Next file system utilizes increasing and decreasing percentage tapered design on a single file. This aids in minimizing the contact between the file and dentin, which increases the efficiency while decreasing the dangerous taper lock and the screw effect. ProTaper NEXT Dentsply files have swaggering movement of the file and utilize the innovative M-Wire technology for strengthening NiTi.
Unlike the concentric core in the ProTaper Universal File system, ProTaper NEXT features an off-center rectangular core. This adds greater strength to the file as it tracks down the canal. Only two points of the rectangular cross-section touch the canal wall at one time, as the axis of rotation differs from the center of mass. The M-Wire technology improves the resistance of the file to cyclic fatigue by almost 400% when compared with other files having the same tip diameter, taper, and cross-section. While increasing the flexibility of the file, the M-Wire technology decreases the potential for broken instruments.
ProTaper NEXT files produce a unique asymmetrical rotary motion. The advantages of the rotary motion and the fact that the file contacts the canal wall at only two points are:
- Reduced engagement due to the swaggering effect, limiting undesirable taper lock
- More cross-sectional space for enhanced cutting
- Allows to cut a bigger envelope of motion