![]() ![]() Available in 21, 25 and 31 mm and with 16 mm of active part and constant conicity in the 3 mm apicals. ![]() According to the manufacturer these files should only be used once, but some studies show that they can be used a greater number of times. Finishing instrument to increase the diameter of the canal to make the apical stop in the root canal. S2 (white ring, to widen the middle third of the duct).S1 (lilac ring, to widen the coronal and middle third of the duct).Being the shortest of all files (19 mm), has a diameter in D1 of 0.19 mm. SX (golden ring, to widen the coronal third of the duct).14mm active part remodelling instrument for punching movement. At the beginning of the active part, in D1, the taper is 0.02 mm/mm, but every 2 millimetres until D16 is reached, the taper increases by 0.02 mm/2mm. With convex triangular cross-section with rounded edges and slightly negative cutting angle. Protaper (Dentsply Maillefer, Tulsa, Okla.). The Wave One system has a pure convex triangular section from D9 to D16 and modified from D1 to D8, whereas the Wave One Gold system has a parallelogram section with 85º edges.The Wave One system is made in M-wire and the new Wave One Gold has a thermal treatment after its manufacture, obtaining a new alloy, called GOLD.In addition, it shortens root canal preparation time by 23% and further reduces clinical fatigue. The files are available in three classic lengths: 21, 25 and 31 mm and have a short 11 mm handle to improve access to the posterior teeth. ![]() 08) will be used to replace the K 020 file if it reaches the expected length or we can include the upper incisors, the premolars with a single duct and some molars with larger diameter ducts.Īfter the Wave One files, the Wave One Gold system was designed in 2015, with 70% more flexibility than the primary system and providing greater channel preparation safety. 06) is used to further advance in replacement of the K 010 file, or we can include the lower incisors, the MBII ducts of the upper molars and/or the ducts with apical curvatures. 08) is designed to fully prepare most root canals. They are single-use in order to respect the new standard of protection. ![]() These files shape the root canals by means of a back-and-forth movement (reciprocal asymmetric movement), which means that they continuously change their direction of rotation during the forming procedure with a large rotation angle in the cutting direction and a smaller angle in the reverse direction (to progress along the path of the canal, respecting the anatomy of the root). Rotary files can be continuously or reciprocally rotated. In addition, modern endodontics not only has rotary files as mechanized instruments, but also a great variety of devices to facilitate endodontic treatment, such as endodontic motors, apex locators, among others.ĭo not miss in detail the main characteristics of each of them. For this reason, rotary or mechanized endodontic files were created to help prepare the root canal in a more comfortable and practical way, but without turning our backs on manual files, that is, taking them as a supplement that facilitates endodontics. As already mentioned in our previous article "All you need to know about endodontic files: (I) Manual files" here comes the continuation.Īs time went by, endodontics was modernized to give rise to more powerful technologies around the needs of dentists. ![]()
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