Sybron twisted file technique

R-Phase increases file flexibility and resistance to cyclic fatigue. Twisting helps preserve grain structure and reduces formation of microfractures, making the file even more durable. Other endodontic files are made by grinding flutes into the file. In a torsional stress comparison, Twisted Files absorbed more energy before fracture than ground blanks 1. Evaluation of product properties resulting from a new NiTi endodontic file manufacturing process.

Once you submit your order, it will be sent directly to your preferred dealer and will be subject to their pricing. Thank you. Skip to main content. Buy Now Documentation More Info. Buy Now Documentation. Add to Cart. By opening the canals with K-files, important information about the anatomy of the root canal is obtained, such as the existence of curves and the diameter of the root canal.

Generally, the first TF that is introduced into the canal is TF The endodontic engine must be set at rpm and the torque at 2 N cm. The file is introduced into the canal in rotation and without pressure applied.

It is sufficient to advance 2 to 4 mm when introducing the file into the canal. If the file does not advance, then a file with a smaller taper TF During preparation, there must be sodium hypochlorite in the root canal at all times. The file is cleaned and examined to detect possible distortion before introduction to the canal and upon withdrawal.

If the file exhibits some distortion, it must be replaced Fig. If TF After reaching the desired taper, the final apical diameter is prepared. There are many studies in the endodontic literature that have found that apical preparation up to a 25 K-file is insufficient. For this reason, after reaching the taper the TF If greater apical diameters are desired, TF The greater the apical diameter is, the greater the quantities of irrigation that reach the apex will be and the cleaner the apex will be.

It is generally known that apical preparation by means of rotary files with large diameters can create many problems because of the stiffness of the rotary files, such as transportation of the apex and changes to the root-canal anatomy. With TF, however, this does not occur, owing to the unique machining process, which ensures that the files are flexible, even those with large apical diameters. The patient came to our clinic with acute apical periodontitis around tooth When examined clinically and radiographically, the tooth showed a large composite filling next to the distal pulp horn Figs.

The periodontal examination did not find any irregularities; however, the tooth was extremely painful in vitality tests. Initially, I intended to replace the composite filling. After removing the old composite filling, I noticed secondary decay that reached up to the pulp chamber Fig. The treatment was performed in one session. The main problem was in the MB2 canal, which had a degree curvature.

The treatment was performed with TF Finally, the tooth was restored with a composite filling Fig. The patient was referred to our clinic by another doctor who had come across difficulties when identifying and working in the canals of tooth The presence of a temporary filling done during previous treatment was observed during the clinical examination Fig.

An initial X-ray was taken to identify any possible associated pathology, the presence of canals, etc. After removing the temporary filling, three root canals were identified, shaped and cleaned Fig.

The final irrigation was done with SmearClear. The tooth was obturated with warm vertical condensation using the Elements Obturation Unit Fig. The control X-ray showed that the root canal and numerous accessory canals Fig.

TF permits treatment even in the most difficult clinical situations and is essential to the dentist. Using TF, it is possible to widen the apex up to a 50 K-file without the risk of transporting the apex.