Skip to main content

Advertisement

SpringerLink
Log in

Impact of new cross-sectional designs on the shaping ability of rotary NiTi instruments in S-shaped canals

  • Original Article
  • Published:
Odontology Aims and scope Submit manuscript

Abstract

The aim was to compare the shaping ability of different rotary nickel–titanium instruments in simulated S-shaped canals. One hundred S-shaped canals in resin blocks were prepared to an apical size 25 using F6 SkyTaper (Komet), Silk Files .04, Silk Files .06, Prototypes .04, and Prototypes .06 (all Mani) (20 canals/group). Material removal was measured at 20 measuring points, beginning 1 mm from the endpoint of preparation. Incidence of canal aberrations, preparation time, and instrument failures were also recorded. Statistical analyses were performed using ANOVA, Student–Newman–Keuls and Chi-square test. Pooled data of all measuring points revealed that canals instrumented with Prototypes .04 were significantly better centered than those prepared with all other instruments, while Prototypes .06 and both Silk Files performed significantly better than F6 SkyTaper (p < 0.05). The preparation time differed significantly between all groups and Prototypes .04 allowed the fastest preparation (p < 0.05). There was no statistically significant association between type of instrument and incidence of aberrations (p > 0.05). The cross-sectional design had a marked impact on the shaping ability of the instruments, and less tapered instruments maintained the original canal curvature better than instruments having greater tapers.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2

Similar content being viewed by others

References

  1. Bürklein S, Schäfer E. Critical evaluation of root canal transportation by instrumentation. Endod Top. 2013;29:110–24.

    Article  Google Scholar 

  2. Zupanc J, Vahdat-Pajouh N, Schäfer E. New thermomechanically treated NiTi alloys—a review. Int Endod J. 2018;51:1088–103.

    Article  Google Scholar 

  3. Shen Y, Zhou HM, Zheng YF, Peng B, Haapasalo M. Current challenges and concepts of the thermomechanical treatment of nickel–titanium instruments. J Endod. 2013;39:163–72.

    Article  Google Scholar 

  4. Schäfer E, Diez C, Hoppe W, Tepel J. Roentgenographic investigation of frequency and degree of canal curvatures in human permanent teeth. J Endod. 2002;28:211–6.

    Article  Google Scholar 

  5. Keskin C, Sarıyılmaz E, Demiral M. Shaping ability of Reciproc Blue reciprocating instruments with or without glide path in simulated S-shaped root canals. J Dent Res Dent Clin Dent Prospects. 2018;12:63–7.

    Article  Google Scholar 

  6. Yilmaz A, Kucukay ES, Istektepe M, Sisli SN, Ersev H, Karagoz-Kucukay I. Comparison of the shaping ability of WaveOne reciprocating files with or without glide path in simulated curved S-shaped root canals. J Int Soc Prev Commun Dent. 2017;7(Suppl 1):S13–7.

    Article  Google Scholar 

  7. Özyürek T, Yılmaz K, Uslu G. Shaping ability of Reciproc, WaveOne GOLD, and HyFlex EDM Single-file systems in simulated S-shaped canals. J Endod. 2017;43:805–9.

    Article  Google Scholar 

  8. Dioguardi M, Troiano G, Laino L, Lo Russo L, Giannatempo G, Lauritano F, Cicciù M, Lo Muzio L. ProTaper and WaveOne systems three-dimensional comparison of device parameters after the shaping technique. A micro-CT study on simulated root canals. Int J Clin Exp Med. 2015;8:17830–4.

    PubMed  PubMed Central  Google Scholar 

  9. Hiran-us S, Pimkhaokham S, Sawasdichai J, Ebihara A, Suda H. Shaping ability of ProTaper NEXT, ProTaper Universal and iRace files in simulated S-shaped canals. Aust Endod J. 2016;42:32–6.

    Article  Google Scholar 

  10. Ceyhanli KT, Kamaci A, Taner M, Erdilek N, Celik D. Shaping ability of two M-wire and two traditional nickel–titanium instrumentation systems in S-shaped resin canals. Niger J Clin Pract. 2015;18:713–7.

    Article  Google Scholar 

  11. Wu H, Peng C, Bai Y, Hu X, Wang L, Li C. Shaping ability of ProTaper Universal, WaveOne and ProTaper Next in simulated L-shaped and S-shaped root canals. BMC Oral Health. 2015;15:27. https://doi.org/10.1186/s12903-015-0012-z.

    Article  PubMed  PubMed Central  Google Scholar 

  12. Bürklein S, Poschmann T, Schäfer E. Shaping ability of different NiTi systems in simulated S-shaped canals with and without glide path. J Endod. 2014;40:1231–4.

    Article  Google Scholar 

  13. Alemam AAH, Dummer PMH, Farnell DJJ. A comparative study of ProTaper Universal and ProTaper Next used by undergraduate students to prepare root canals. J Endod. 2017;43:1364–9.

    Article  Google Scholar 

  14. Shen LC, Gutmann JL. Management of a mandibular second molar with dilacerated and S-shaped root canals. ENDO (Lond Engl). 2016;10:225–9.

    Google Scholar 

  15. López-Ampudia N, Gutmann JL. Management of ‘S-shaped’ root canals—technique and case report. ENDO (Lond Engl). 2011;5:7–15.

    Google Scholar 

  16. Zhang EW, Cheung GS, Zheng YF. Influence of cross-sectional design and dimension on mechanical behavior of nickel-titanium instruments under torsion and bending: a numerical analysis. J Endod. 2010;36:1394–8.

    Article  Google Scholar 

  17. Bürklein S, Mathey D, Schäfer E. Shaping ability of ProTaper NEXT and BT-RaCe nickel-titanium instruments in severely curved root canals. Int Endod J. 2015;48:774–81.

    Article  Google Scholar 

  18. Kyaw Moe MM, Ha JH, Jin MU, Kim YK, Kim SK. Root canal shaping effect of instruments with offset mass of rotation in the mandibular first molar: a micro-computed tomographic study. J Endod. 2018;44:822–7.

    Article  Google Scholar 

  19. Ha JH, Cheung GS, Versluis A, Lee CJ, Kwak SW, Kim HC. ‘Screw-in’ tendency of rotary nickel-titanium files due to design geometry. Int Endod J. 2015;48:666–72.

    Article  Google Scholar 

  20. Pansheriya E, Goel M, Gupta KD, Ahuja R, Kaur RD, Garg V. Comparative evaluation of apical transportation and canal centric ability in apical region of newer nickel–titanium file systems using cone-beam computed tomography on extracted molars: an in vitro study. Contemp Clin Dent. 2018;9(Suppl 2):S215–20.

    Article  Google Scholar 

  21. Bürklein S, Jäger PG, Schäfer E. Apical transportation and canal straightening with different continuously tapered rotary file systems in severely curved root canals: F6 SkyTaper and OneShape versus Mtwo. Int Endod J. 2017;50:983–90.

    Article  Google Scholar 

  22. Bonaccorso A, Cantatore G, Condorelli GG, Schäfer E, Tripi TR. Shaping ability of four nickel–titanium rotary instruments in simulated S-shaped canals. J Endod. 2009;35:883–6.

    Article  Google Scholar 

  23. Saleh AM, Vakili Gilani P, Tavanafar S, Schäfer E. Shaping ability of 4 different single-file systems in simulated S-shaped canals. J Endod. 2015;41:548–52.

    Article  Google Scholar 

  24. Burroughs JR, Bergeron BE, Roberts MD, Hagan JL, Himel VT. Shaping ability of three nickel-titanium file systems in simulated S-shaped root canals. J Endod. 2012;38:1618–21.

    Article  Google Scholar 

  25. Schäfer E, Dzepina A, Danesh G. Bending properties of rotary nickel–titanium instruments. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2003;96:757–63.

    Article  Google Scholar 

  26. Yoshimine Y, Ono M, Akamine A. The shaping effects of three nickel-titanium rotary instruments in simulated S-shaped canals. J Endod. 2005;31:373–5.

    Article  Google Scholar 

  27. Fukumori Y, Nishijyo M, Tokita D, Miyara K, Ebihara A, Okiji T. Comparative analysis of mechanical properties of differently tapered nickel titanium endodontic rotary instruments. Dent Mater J. 2018;37:667–74.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Periodontology and Operative Dentistry, University of Münster, Münster, Germany

    David Donnermeyer

  2. Münster, Germany

    Anne Viedenz

  3. Central Interdisciplinary Ambulance in the School of Dentistry, University of Münster, Waldeyerstr. 30, 48149, Münster, Germany

    Edgar Schäfer & Sebastian Bürklein

Authors
  1. David Donnermeyer
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Anne Viedenz
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Edgar Schäfer
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Sebastian Bürklein
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Edgar Schäfer.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Donnermeyer, D., Viedenz, A., Schäfer, E. et al. Impact of new cross-sectional designs on the shaping ability of rotary NiTi instruments in S-shaped canals. Odontology 108, 174–179 (2020). https://doi.org/10.1007/s10266-019-00450-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10266-019-00450-6

Keywords

Search

Navigation