Description
Description :
Create straight line access to canal orifice.
1. In the presence of a viscous chelator (such as ProLube ® Root Canal Conditioner)
passively scout the coronal 2 3 with 10 # and 15 # hand
2.Gently work these instruments until a smooth, reproducible glide path is confirmed.
Alternatively, ET Files may be used after a 10 # hand
3.In the presence of NaOCl , float ” the S 1 in the canal and passively follow ” the glide
path.
4. Before light resistance is encountered, laterally brush ” and cut dentin on the outstroke
to improve straight line access and apical progression. Always brush away from the
furcation.
5. Continue shaping with S 1 as described until the depth of the 15 # hand file is
6.Use the S 2 , exactly as described for the S 1 , until the depth of the 15 # hand feel is
reached.
7. In the presence of a viscous chelator or NaOCl , scout the apical 1 3 with 10 # and 15 #
hand files and gently work them until they are loose at length.
8.Establish working length, confirm patency and verify the presence of a smooth
reproducible glide path in the apical 1 3
9.Use the S 1 , with a brushing action, until working length is
10.Use the S 2 , with a brushing action, until working length is
11. Reconfirm working length, irrigate, recapitulate and re irrigate, especially in more
curved canals.
12.Use Finishing File F 1 , in a non brushing ” action, with each insertion deeper than the
previous insertion until working length is reached. Do not leave the file at working
length for longer than one second.
13.Gauge the foramen with a 20 # hand file. If the instrument is snug at length, the canal is
shaped and ready to be obturated.
14.If the 20 hand file is loose at length, proceed to the F 2 and, when necessary the F 3 , F 4
and F 5 , with the same non brushing motion to working length, gauging after each
Finishing file with 25 #, 30 #, 40 # or 50 # hand files
15.If necessary, use the SX with a brushing motion to move the coronal aspect of the canal
away from furcal concavities and/or to create more coronal shape.
16. SX can also be used to optimally shape canals in shorter roots.
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