To mechanically shape and prepare the root canals during endodontic therapy.
To remove the root canal obturating material while performing retreatment.
To remove infected pulp.
Recommended speed : 250 – 350 rpm
Recommended torque : 2 ~ 3 NCM
1. Coronal shaping - Before the endo procedure, disinfect inside of the canals using EDTA.
2. Use DX File to shape the coronal section and enlarge the opening of the canal.
3. Canal scouting - Determine the working length with an X-ray and scout the canal space using K-Files #8 and #10.
4. Glide path - Follow the glide path using K-File #15 and enlarge the opening of the canal.
5. Coronal middle - D1 expands the glide path and enlarges to widen the coronal section. Irrigate with NaOCI before engaging the file. Shape the middle part of the coronal section using D1 File.
6. Middle apical - Continue shaping the middle and apical portions with D1 file using gentle force to brush laterally. Cut the dentin on the outstroke to improve straight-line access and apical progression.
7. Full working length - After providing adequate irrigation, continue shaping the rest of the section
(up to the apex) using D1 File.
8. Canal shaping - D2 enlarges to the apical 2/3. Shape the canal section with a gentle brushing action using D2 File.
9. Confirm working length frequently, especially when shaping severely curved canals.
10. Canal shaping -Shape down to the apex using D3 File with an in-and-out pecking motion. Finish shaping when it matches the size of K-File #20.
Final shaping -If the apex is larger than hand file #20, continue shaping with D4 (if #20 hand file
is loose at length) and/or D5 (if #25 hand
file is loose at length).
Store at cool and dry place.