protaper Rotary endodontic systems by Dr.M.Aldesouky


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protaper Rotary endodontic systems by Dr.M.Aldesouky

  1. 1. Dr. Mohammed Ibrahim €ldo$ok¥
  2. 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. 3. Rotary systems
  4. 4.  ProTaper nickel-titanium rotary files substantially simplify root canal preparation, particularly in curved and restricted canals
  5. 5. 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.
  6. 6. 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
  7. 7. 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.
  8. 8. 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.
  9. 9. 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
  10. 10.  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
  11. 11. 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.
  12. 12. 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
  13. 13. 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
  14. 14. 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
  15. 15. 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
  16. 16.  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
  17. 17.  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.