Comparison of shaping ability of ProTaper Next and 2Shape nickel—titanium files in simulated severe curved canals

  • Simone Staffoli | simone.staffoli@uniroma1.it Department of Oral and Maxillofacial Science, Sapienza University of Rome, Italy.
  • Taha Ozyurek Department of Endodontics, Faculty of Dentistry, Istanbul Medeniyet University, Samsun, Turkey.
  • Avi Hadad Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel.
  • Alex Lvovsky Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel.
  • Michael Solomonov Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel.
  • Hadas Azizi Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel.
  • Joe Ben Itzhak Department of Endodontics, Israel Defense Forces Medical Corps, Tel Hashomer, Israel.
  • Maurizo Bossù Department of Oral and Maxillofacial Science, Sapienza University of Rome, Italy.
  • Nicola M. Grande Department of Endodontics, Catholic University of Sacred Heart, Rome, Italy.
  • Gianluca Plotino Private Practice, Grande Plotino and Torsello - Studio di Odontoiatria, Rome, Italy.
  • Antonella Polimeni Department of Oral and Maxillofacial Science, Sapienza University of Rome, Italy.

Abstract

Aim: To evaluate the centering ability of ProTaper Next (PTN) and 2Shape (TS) nickel—titanium (NiTi) instruments in terms of maintaining the original root canal configuration in a simulated tooth with severe curvature. Methodology: Twenty standardized simulated curved root canals were prepared to an apical size of 0.25 mm using PTN and TS (n = 10 canal/group) nickel-titanium files. A gig was constructed to enable reproducible image acquisition using a photographic camera. Pre- and post-instrumented images were recorded and superimposed using a computer software. The ability of the instruments to remain centered in the canal was determined by calculating a centering ratio at three independent points of the simulated canal: coronal, middle and apical third of the curvature, using a computer software. Statistical analysis was performed using one-way analysis of variance (ANOVA) followed by independent sample t-test at 5% significance level. Results: No significant difference was found between the two systems (p > 0.05). At the apical third, the mean centering ratio was significantly higher than the centering ratio of the coronal and the middle thirds in both TS and PTN (p < 0.05). Conclusions: There were no significant differences in the centering ability of the ProTaper Next and 2Shape systems in simulated severe curved canals. Both systems exhibited some degree of transportation, especially in the apical third.

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Published
2019-02-20
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Original Articles
Keywords:
NichelTitanio, Trattamento termico, 2Shape, Protaper Next, Capacità di centratura
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How to Cite
Staffoli, S., Ozyurek, T., Hadad, A., Lvovsky, A., Solomonov, M., Azizi, H., Itzhak, J. B., Bossù, M., Grande, N. M., Plotino, G., & Polimeni, A. (2019). Comparison of shaping ability of ProTaper Next and 2Shape nickel—titanium files in simulated severe curved canals. Giornale Italiano Di Endodonzia, 32(2), 52-56. https://doi.org/10.32067/gie.2018.32.02.02