head JofIMAB
Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski Publishing
ISSN: 1312-773X (Online)
Issue: 2018, vol. 24, issue2
Subject Area: Dental Medicine
DOI: 10.5272/jimab.2018242.2014
Published online: 06 June 2018

Original article

J of IMAB. 2018 Apr-Jun;24(2):2014-2019
Evaluation of deformation and fracture of three single-file NiTi rotary instruments: ProTaper F2, WaveOne Primary and OneShape in simulated curved canals
Mina A. ShenoudaORCID logo Corresponding Autoremail, Wafaa Ahmed Omar Segari, Siza Y. Zakhari,
Department of Endodontics, Faculty of Oral and Dental Medicine, Cairo University, Egypt.

Purpose. The aim of the current study was to compare the incidence of deformation and fracture in three single-file NiTi instruments:  ProTaper F2, WaveOne Primary and OneShape.
Methods. Fifteen instruments were equally divided into three groups: ProTaper F2 in reciprocation, WaveOne Primary in reciprocation and OneShape in continuous rotation. Each instrument was used to prepare standardized simulated curved canals in resin blocks until fracture had occurred. Following each canal preparation, the instruments were examined for deformation both by naked eye inspection and stereomicroscopic examination. The average number of canals prepared until the first incidence of cracks and the average lifespan of the instruments were calculated. Data were analysed using one-way ANOVA and two-sample t-test.
Results. There was no statistically significant difference between ProTaper and WaveOne instruments in both the incidence of cracks and the average lifespan (P > 0.05). OneShape instruments had a significantly delayed incidence of cracks and a longer lifespan than both ProTaper and WaveOne instruments (P < 0.05); however, OneShape instruments showed a noticeable early plastic deformation.
Conclusion: PT F2 instrument was comparable to WO Primary instrument in terms of fracture resistance, while OS instrument had more fracture resistance than both PT F2 and WO Primary instruments.

Keywords: crack, deformation, fracture, simulated canals, single-file,

pdf - Download FULL TEXT /PDF 1467 KB/
Please cite this article as: Shenouda MA, Segari WAO, Zakhari SY. Evaluation of deformation and fracture of three single-file NiTi rotary instruments: ProTaper F2, WaveOne Primary and OneShape in simulated curved canals. J of IMAB. 2018 Apr-Jun;24(2):2014-2019. DOI: 10.5272/jimab.2018242.2014

Corresponding AutorCorrespondence to: Mina Aziz Shenouda; 63, Ain Shams Str., Cairo, Egypt 11761; E-mail: mina.shenouda@dentistry.cu.edu.eg ,

1. Yared G. Canal preparation using only one Ni-Ti rotary instrument: preliminary observations. Int Endod  J. 2008 Apr;41(4):339-44. [PubMed] [CrossRef]
2. Webber J. WaveOne - The New Single File System from Maillefer. Dentsply Syrona. 5/12/2011. [Internet]
3. Micro-Mega, Besancon F. One Shape ® brochure 2014. [Intrnet]
4. Cunha RS, Junaid A, Ensinas P, Nudera W, Da Silveira Bueno CE. Assessment of the separation incidence of reciprocating WaveOne files: A prospective clinical study. J Endod. 2014 Jul;40(7):922-4. [PubMed] [CrossRef]
5. Troian CH, Sу MVR, Figueiredo JA, Oliveira EP. Deformation and fracture of RaCe and K3 endodontic instruments according to the number of uses. Int Endod  J. 2006 Aug;39(8):616-25. [PubMed] [CrossRef]
6. Inan U, Aydin C, Uzun O, Topuz O, Alacam T. Evaluation of the Surface Characteristics of Used and New ProTaper Instruments: An Atomic Force Microscopy Study. J Endod. 2007 Nov;33(11):1334-7. [PubMed] [CrossRef]
7. Pruett JP, Clement DJ, Carnes DL. Cyclic fatigue testing of nickel-titanium endodontic instruments. J Endod. 1997 Feb;23(2):77-85. [PubMed] [CrossRef]
8. Sattapan B, Nervo GJ, Palamara JE, Messer HH. Defects in rotary nickel-titanium files after clinical use. J Endod. 2000 Mar;26(3):161-5. [PubMed] [CrossRef]
9. Saber SE, Nagy MM, Schäfer E. Comparative evaluation of the shaping ability of WaveOne, Reciproc and OneShape single-file systems in severely curved root canals of extracted teeth. Int Endod J. 2015 Jan;48(1):109-14. [PubMed] [CrossRef]
10. Wei X, Ling J, Jiang J, Huang X, Liu L. Modes of Failure of ProTaper Nickel-Titanium Rotary Instruments fter Clinical Use. J Endod. 2007 Mar;33(3):276-9. [PubMed] [CrossRef]
11. Sonntag D, Peters OA. Effect of Prion Decontamination Protocols on Nickel-Titanium Rotary Surfaces. J Endod. 2007 Apr;33(4):442-6. [PubMed] [CrossRef]
12. Gambarini G, Grande NM, Plotino G. Somma F, Garala M, De Luca M, et al. Fatigue Resistance of Engine-driven Rotary Nickel-Titanium Instruments Produced by New Manufacturing Methods. J Endod. 2008 Aug;34(8):1003-5. [PubMed] [CrossRef]
13. Bürklein S, Benten S, Schäfer E. Shaping ability of different single-file systems in severely curved root canals of extracted teeth. Int Endod  J. 2013 Jun;46(6):5907. [PubMed] [CrossRef].
14. Saleh AM, Vakili Gilani P, Tavanafar S, Schдfer E. Shaping Ability of 4 Different Single-file Systems in Simulated S-shaped Canals. J Endod. 2015 Apr;41(4):548-52. [PubMed] [CrossRef]
15. Pirani C, Ruggeri O, Cirulli PP, Pelliccioni GA, Gandolfi MG, Prati C. Metallurgical analysis and fatigue resistance of WaveOne and ProTaper Nickel-Titanium instruments. Odontology. 2014 Jul;102(2):211-6. [PubMed] [CrossRef]
16. Pereira ES, Peixoto IF, Viana AC, Oliveira II, Gonzalez BM, Buono VT, et al. Physical and mechanical properties of a thermomechanically treated NiTi wire used in the manufacture of rotary endodontic instruments. Int Endod  J. 2012 May;45(5):469-74. [PubMed] [CrossRef]
17. Pereira ES, Gomes RO, Leroy AM, Singh R, Peters OA, Bahia MG, et al. Mechanical behavior of M-Wire and conventional NiTi wire used to manufacture rotary endodontic instruments. Dent Mater. 2013 Dec;29(12):e318-24. [PubMed] [CrossRef]
18. Plotino G, Grande NM, Cordaro M, Testarelli L, Gambarini G. A Review of Cyclic Fatigue Testing of Nickel-Titanium Rotary Instruments. J Endod. 2009 Nov;35(11):1469-76. [PubMed] [CrossRef]
19. Anderson ME, Price JWH, Parashos P. Fracture Resistance of Electropolished Rotary Nickel-Titanium Endodontic Instruments. J Endod. 2007 Oct;33(10):1212-6. [PubMed] [CrossRef]
20. Plotino G, Grande NM, Testarelli L, Gambarini G. Cyclic fatigue of Reciproc and WaveOne reciprocating instruments. Int Endod  J. 2012 Jul;45(7):614-8. [PubMed] [CrossRef].
21. Shah M, Patel M, Amin A, Kharod P, Joshi C. Fracture Resistance of WaveOne Rotary File Used In Reciprocating Motion. Bhavnagar University Journal Of Dentistry. 2013 Jan;3(1):14-8.

Received: 25 February 2018
Published online: 06 June 2018

back to Online Journal