Acta Scientific Dental Sciences (ASDS)(ISSN: 2581-4893)

Research Article Volume 6 Issue 10

Preparation Activities of Different Ni-Ti File Systems in Curved Canals

Merve Kanber1, H Melike Bayram2*, Emre Bayram2, Mert Ocak3 and H Hamdi Celik4

1Special Dental Clinic, İstanbul, Turkey
2Department of Endodontics, Faculty of Dentistry, Gaziosmanpaşa University, Tokat, Turkey
3Department of Anatomy, Faculty of Dentistry, Ankara University, Ankara, Turkey
4Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara, Turkey

*Corresponding Author:H Melike Bayram, Department of Endodontics, Faculty of Dentistry, Gaziosmanpaşa University, Tokat, Turkey.

Received: July 26, 2022; Published: September 20, 2022


Objective: To compare the effects of HyFlex EDM(HEDM), WaveOne Gold (WOG), XP-Endo Shaper (XP), Reciproc (R) and ProTaper Next (PTN) systems on transportation, centering abilities, and canal volume in the preparation of curved root canals using the micro-CT imaging technique, to evaluate the changes on the surfaces of Ni-Ti instruments after use by SEM, and to compare the preparation times.

Materials and Methods: 40 mandibular molar teeth with Vertucci Type IV were included in this study after the initial micro-ct scanning. Access cavities were opened. The working length was calculated. Five different Ni-Ti systems were used to prepare the samples(n=16): HEDM, XP, WOG, R, PTN. During the preparation, the root canals were irrigated with 5 ml of 5% NaOCl and 10 ml of distilled water. Prepared samples were rescanned by micro-CT. The canal volume, the working times, canal transportation, transportation direction, and centering ability were evaluated for each group.

Results: The transportation of PTN, HEDM, and WOG groups is significantly higher than XP (p < 0.005), whereas the transportation of WOG is not significantly differenct than R. No statistically significant difference was found between the centering ability of the groups (p > 0.05). Similarly, there is no significant difference in the direction of transportation between PTN, R, WOG, HEDM and XP (p > 0.05). there was no significant difference between the post-preparation volume between the groups (p > 0.05). the working time of HEDM is significantly longer than PTN, R, WOG, and XP (p < 0.005). No instrument fracture was observed in any groups during the preparation of root canals.

Conclusion: the XP caused significantly less transportation than other Ni-Ti systems, but none of the file systems used had an excellent centering ability. No significant difference was found in transportation direction, centering ability, and volume change after preparation between HEDM, XP, WOG, R and PTN.

Keywords: Centering ability; Micro CT; Ni-Ti Files; Transportation


  1. Stringheta CP., et al. "Micro-computed tomographic evaluation of the shaping ability of four instrumentation systems in curved root canals". International Endodontic Journal 52 (2019): 908-916.
  2. Brasil SC., et al. "Canal Transportation, Unprepared Areas, and Dentin Removal after Preparation with BT-RaCe and ProTaper Next Systems". Journal of Endodontics 43 (2017): 1683-1687.
  3. Versiani MA., et al. "Micro-computed Tomographic Evaluation of the Shaping Ability of XP-endo Shaper, iRaCe, and EdgeFile Systems in Long Oval-shaped Canals". Journal of Endodontics 44 (2018): 489-495.
  4. Hassan R., et al. "Comparison of canal transportation and centering ability of Xp Shaper, WaveOne and Oneshape: a cone beam computed tomography study of curved root canals". Acta Odontologica Latinoamericana: AOL 31 (2018): 67-74.
  5. Pedullà E., et al. "Torsional and Cyclic Fatigue Resistance of a New Nickel-Titanium Instrument Manufactured by Electrical Discharge Machining". Journal of Endodontics 42 (2016): 156-159.
  6. Azim AA., et al. "Comparison between Single-file Rotary Systems: Part 2-The Effect of Length of the Instrument Subjected to Cyclic Loading on Cyclic Fatigue Resistance". Journal of endodontics 44 (2018): 1837-1842.
  7. Pasqualini D et al. "Computed micro-tomographic evaluation of glide path with nickel-titanium rotary PathFile in maxillary first molars curved canals". Journal of Endodontics. 38 (2012): 389-393.
  8. Schneider SW. "A comparison of canal preparations in straight and curved root canals". Oral Surgery, Oral Medicine, and Oral Pathology 32 (1971): 271-275.
  9. Gambill JM., et al. "Comparison of nickel-titanium and stainless steel hand-file instrumentation using computed tomography". Journal of Endodontics 22 (1996): 369-375.
  10. Vallaeys K., et al. "Comparative analysis of canal transportation and centring ability of three Ni-Ti rotary endodontic systems: Protaper®, MTwo® and Revo-S™, assessed by micro-computed tomography". Odontology 104 (2016): 83-88.
  11. Aydın ZU., et al. "Microcomputed Assessment of Transportation, Centering Ratio, Canal Area, and Volume Increase after Single-file Rotary and Reciprocating Glide Path Instrumentation in Curved Root Canals: A Laboratory Study". Journal of Endodontics 45 (2019): 791-796.
  12. Siqueira JF., et al. "Correlative bacteriologic and micro-computed tomographic analysis of mandibular molar mesial canals prepared by self-adjusting file, reciproc, and twisted file systems". Journal of Endodontics 39 (2013): 1044-1050.
  13. Junaid A., et al. "Influence of single-file endodontics on apical transportation in curved root canals: an ex vivo micro-computed tomographic study". Journal of Endodontics 40 (2014): 717-720.
  14. Duran-Sindreu F., et al. "A comparison of apical transportation between FlexMaster and Twisted Files rotary instruments". Journal of Endodontics 38 (2012): 993-995.
  15. Santa-Rosa J., et al. "Shaping Ability of Single-file Systems with Different Movements: A Micro-computed Tomographic Study". Iranian Endodontic Journal 11 (2016): 228-233.
  16. Sousa-Neto MD., et al. "A micro-CT evaluation of the performance of rotary and reciprocating single-file systems in shaping ability of curved root canals". Brazilian Oral Research 34 (2020): e039.
  17. Poly A., et al. "Canal transportation and centering ratio after preparation in severely curved canals: analysis by micro-computed tomography and double-digital radiography". Clinical Oral İnvestigations 23 (2019): 4255-4262.
  18. Yamamura B., et al. "Comparing canal transportation and centering ability of endosequence and vortex rotary files by using micro-computed tomography". Journal of Endodontics 38 (2012): 1121-1125.
  19. Perez Morales MLN., et al. "TRUShape Versus XP-endo Shaper: A Micro-computed Tomographic Assessment and Comparative Study of the Shaping Ability-An In Vitro Study". Journal of Endodontics 46 (2020): 271-276.
  20. Turkistani AK., et al. "Shaping Ability of HyFlex EDM and ProTaper Next Rotary Instruments in Curved Root Canals: A Micro-CT Study". The Journal of Contemporary Dental Practice 20 (2019): 680-685.
  21. Short JA., et al. "A comparison of canal centering ability of four instrumentation techniques". Journal of Endodontics 23 (1997): 503-507.
  22. Gergi R., et al. "Comparison of canal transportation and centering ability of twisted files, Pathfile-ProTaper system, and stainless steel hand K-files by using computed tomography". Journal of Endodontics 36 (2010): 904-907.
  23. Hwang YH., et al. "Shaping ability of the conventional nickel-titanium and reciprocating nickel-titanium file systems: a comparative study using micro-computed tomography". Journal of Endodontics 40 (2014): 1186-1189.
  24. Marceliano-Alves MF., et al. "Shaping ability of single-file reciprocating and heat-treated multifile rotary systems: a micro-CT study". International Endodontic Journal 48 (2015): 1129-36.
  25. Peters OA. "Current challenges and concepts in the preparation of root canal systems: a review". Journal of Endodontics 30 (2004): 559-567.
  26. Hülsmann M., et al. "Mechanical preparation of root canals: shaping goals, techniques and means". Endodontic Topics 10 (2005): 30-76.
  27. Citation

    Citation: H Melike Bayram., et al. “Preparation Activities of Different Ni-Ti File Systems in Curved Canals”. Acta Scientific Dental Sciences 6.10 (2022): 43-51.


    Copyright: © 2022 H Melike Bayram., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Acceptance rate30%
Acceptance to publication20-30 days
Impact Factor1.278

Indexed In

News and Events

  • Certification for Review
    Acta Scientific certifies the Editors/reviewers for their review done towards the assigned articles of the respective journals.
  • Submission Timeline for Upcoming Issue
    The last date for submission of articles for regular Issues is December 15, 2022.
  • Publication Certificate
    Authors will be issued a "Publication Certificate" as a mark of appreciation for publishing their work.
  • Best Article of the Issue
    The Editors will elect one Best Article after each issue release. The authors of this article will be provided with a certificate of “Best Article of the Issue”.
  • Welcoming Article Submission
    Acta Scientific delightfully welcomes active researchers for submission of articles towards the upcoming issue of respective journals.
  • Contact US