This document discusses the ProTaper rotary file system for root canal preparation. It has 3 shaping files (S1, S2, SX) and 5 finishing files (F1-F5) made of nickel-titanium that simplify canal preparation. The shaping files have increasing tapers that prepare different areas of the canal from crown to apex. The finishing files further refine the canal from sizes 20 to 50 to create a continuously tapering shape. The recommended technique involves using the shaping files followed by finishing files to the working length with irrigation between each file.

1. Dr. Mohammed Ibrahim
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2. 21:34:33 Dr.M.Eldosoky
‫الرحيم‬ ‫الرحمن‬ ‫هللا‬ ‫بسم‬
‫العليم‬ ‫أنت‬ ‫إنك‬ ‫علمتنا‬ ‫ما‬ ‫إال‬ ‫لنا‬ ‫العلم‬ ‫سبحانك‬ ‫قالوا‬
‫الحكيم‬
‫العظيم‬ ‫هللا‬ ‫صدق‬

3. Rotary systems

5.  ProTaper nickel-titanium rotary files substantially
simplify root canal preparation, particularly in curved
and restricted canals

6. ProTaper Configurations:
1) Three shaping files --------- S X, S1 & S2
2) Three finishing files ----- ---- F 1, F 2, F3 +
3) Accessory finishing files F 4 & F 5
All files are available
in 21 mm ,25 mm and
31mm lengths.

7. File Design Features :
 ProTaper shaping instruments have a convex
triangular cross-section which reduces the contact
area between the file and dentin.
 But F-3, F-4, & F-5 has a reduced cross- sections with
a U- shape to facilitate a higher degree of flexibility

8. Shaping Files:
The S-X Shaper is an auxiliary instrument used in
canals of teeth with shorter roots or to extend and
expand the coronal aspects of the preparation, similar to
the use of Gates-Glidden drills or orifice openers.
 (Sx) has no identification ring color on its gold-colored
handle and a shorter overall length of 19 mm. The Sx has a D0
diameter of 0.19mm and a D14 diameter approaching 1.20
mm. The shaping instruments have increasingly larger
percentage tapers over the length of their cutting blades
allowing each instrument to engage, cut and prepare a
specific area of the coronal aspect of canal relocates canal
orifices resulting in straight line access. Sx has a much
quicker rate of taper between D1 and D9 as compared with
the other ProTaper Shaping files.

9. S-1 and S-2 files
 Shaping File S-1 is designed to prepare the coronal 1/3 of the
canal, whereas
 Shaping File S-2 enlarges and prepares the middle third in
addition to the critical coronal region of the apical third.

10. Finishing Files.
 The three finishing F-1, F-2, F-3 + 2 Accessory finishing
files F-4, F-5
 have been designed to plane away the variations in canal
diameter in the apical one-third.
 F-1, F-2, F-3 have tip diameters (D0) of ISO sizes 20, 25,
and 30, respectively

11.  F-4, andF-5 Accessory files are added under the name
ProTaper Universal these files has have tip
diameters (D0) of ISO sizes 40 and 50 tapers

13. Canal Preparation
1- Fill the pulp chamber with either Glyde or Sodium
Hypochlorite (NaOCl) for all initial negotiation
procedures. Explore the coronal two-thirds of the
canal with stainless steel Nos. 10 and 15 hand files,
using a reciprocating back and forth motion. Work
those instruments passively and progressively until
they are loose.

14. 2. re-irrigate
3. Using S1 to remove the crownal ledge in brushing
motion for better straight line access. it will have a
glide path of the hand file preceded it. complete
finishing the crownal area this accomplished when a
light resistance is encountered

15. 4- Re irrigate , recapitulate using file 10k to negotiate
the rest of the canal and establish patency then use
hand file 15K to confirm working length and verify a
glide path

16. 5-Use S1 to the full length it will go easily Once it
reached remove .you should never force any rotary
instrument
Irrigate , recapitulate with hand file
10 ,reirrigate

17. 6- Shaping file S-2 is now used to full working length.
Once it reached remove and Irrigate, recapitulate, and
re- irrigate.
Now the crownal 2/3 of the
canal is optimally prepared

18.  With the canal flooded with irrigant, work the F1
(yellow 20) to length in one or more passes.
 If the F1 ceases to advance deeper into the canal,
remove the file, clear its blades , then continue with its
use until it reaches length.
 Irrigate, recapitulate and re-irrigate.
Finishing files

19.  Following the use of F1 to length, gauge the foramen
with a 20 hand file. If the 20 hand file is snug at
length, the canal is shaped and ready to fill.
 If the 20 hand file is loose at length, proceed to the F2
and, when necessary, the F3, gauging after each
Finisher with the 25 and 30 hand files, respectively.