The post for using the rotary files described in this article is based on the denco SUPER FILES III/D-SUPER FILES.
Open pulp – medullary cavity trimming
Probe the root canal
- Probe root canal by #08 or #10 K file
- The depth of exploration is 4mm from the apical of the X-ray or the depth can be reached.
Root canal dredge
- Choose the Apical file：Generally use K files with size #10 or #15.
- Purpose ：Prevent the NITI Rotary files deviate from the root canal.
- The most important thing is shaping.And dredge by rotary dredging.
Root canal shaping
- Prepare root canal with S1
- The depth should not be deeper than the arrival position of the 10# K file (to ensure that the shapping file tip will not be blocked)
- If necessary, use SX to enlarge the root canal and establish a straight access path for the instrument (SX depth should not exceed S1)
- Measuring working length by stainless steel file 15#
Root canal shaping/Finishing
- Prepare to work length with S1
- After S1 reaches the working length, use S2 preparation.
- Using F1 preparation to working length after S2 arrived working
- Immediately drop out the file when Finishing file arrive working length
- Using in both a pecking and brushing motion
Root canal Finishing
- Prepare to working length by F2
- Immediately drop out the file when Finishing file arrived working length.
- Probe the apical by stainless steel file. Using F2 continue prepare if apical diameter bigger than 20#.
- Immediately drop out the file as long as Finishing file arrived working length.
- Don’t brush the root canal wall by Finishing files