Keywords
Resistencia a la fatiga cíclica; Modelo de demostración; Trayectoria de deslizamiento; PathFile; Reutilización; ScoutRace.
How to Cite
Abstract
The aim of this study was to compare the cyclic fatigue resistance (CFR) of PathFile (Dentsply Sirona, Ballaigues, Switzerland) and ScoutRace (FKG Dentaire, La Chaux-de-Fonds, Switzerland) glide path files which were either new or previously used. Forty PathFile (PF) 19/.02 and 40 ScoutRace (SR) 20/.02 instruments were used for this study. Half of the files in each group were used (PF-U and SR-U) in the 3D demo tooth models (FKG Dentaire, La Chaux-de-Fonds, Switzerland) for creating glide paths, while the other half was new (PF-N and SR-N) and directly subjected to the cyclic fatigue test. The new and used files (n=80) were rotated in the cyclic fatigue test device with an artificial stainless-steel canal (60° curvature, 5 mm radius 1.5 mm width and 3.0 mm depth) under the continuous irrigation with distilled water at 37°C until fracture occurred. Time to fracture was recorded and the Weibull reliability analysis was performed. Data were statistically analysed. Conformity to normal distribution was examined using the Shapiro-Wilk test. A paired two-sample t-test was used to compare the TTF values according to the time within the groups. The new instruments (PF-N and SR-N) showed better CFR than the used groups (PF-U and SR-U) (P<0.05). The TTF values of PF were statistically higher than SR in both new and used groups (P<0.05). The predicted time for %99 survival for the files was PF-N> SR-N>PF-U >SR-U. Reuse of both glide path instruments reduced the time to fracture and the cyclic fatigue resistance of the files.
References
Keskin N.B., Özyürek T., Uslu G., İnan U. Cyclic fatigue resistance of new and used ProTaper universal and ProTaper next nickel-titanium rotary instruments. Saudi Endod J. 2018; 8: 82-86.
Cheung G.S. Instrument fracture: mechanisms, removal of fragments, and clinical outcomes. Endod Topics. 2007; 16: 1-26. https://doi.org/10.1111/j.1601-1546.2009.00239.x
Ajuz N.C., Armada L., Goncalves L.S., Debelian G., Siqueira Jr J.F. Glide path preparation in S-shaped canals with rotary pathfinding nickel-titanium instruments. J Endod 2013; 39: 534-537. https://doi.org/10.1016/j.joen.2012.12.025
Özyürek T., Uslu G., Yılmaz K., Gündoğar M. Effect of glide path creating on cyclic fatigue resistance of Reciproc and Reciproc Blue nickel-titanium files: a laboratory study. J Endod. 2018; 44 (6): 1033-1037. https://doi.org/10.1016/j.joen.2018.03.004
Patino P.V., Biedma B.M., Liebana C.R., Cantatore G., Bahilo J.G. The influence of a manual glide path on the separation rate of NiTi rotary instruments. J Endod. 2005; 31: 114-116. https://doi.org/10.1097/01.don.0000136209.28647.13
D’Amario M., Baldi M., Petricca R., De Angelis F., El Abed R., D’Arcangelo C. Evaluation of a new nickel-titanium system to create the glide path in root canal preparation of curved canals. J Endod. 2013; 39: 1581-1584. https://doi.org/10.1016/j.joen.2013.06.037
Capar I.D., Kaval M.E., Ertas H., Sen B.H. Comparison of the cyclic fatigue resistance of 5 different rotary pathfinding instruments made of conventional nickel-titanium wire, M-wire, and controlled memory wire. J Endod. 2015; 41 (4): 535-538. https://doi.org/10.1016/j.joen.2014.11.008
Viana L.C.T.M.C., Maniglia-Ferreira C., de Almeida-Gomes F., Gurgel Filho E.D., Garcia L.P., Pappen F.G. Evaluation of the cyclic fatigue resistance of rotary pathfinding instruments made of nickel-titanium (NiTi) alloys with different heat treatments. Giornale Italiano di Endodonzia. 2019; 33 (1). https://doi.org/10.32067/gie.2019.33.01.05
Topçuoğlu H.S., Topçuoğlu G., Düzgün S. Resistance to cyclic fatigue of PathFile, ScoutRaCe and ProGlider glide path files in an S-shaped canal. Int Endod J. 2018; 51 (5): 509-514. https://doi.org/10.1111/iej.12758
Lopes H.P., Elias C.N., Siqueira Jr J.F, Soares R.G., Souza L.C., Oliveira J.C. et al. Mechanical behavior of pathfinding endodontic instruments. J Endod. 2012; 38 (10): 1417-1421. https://doi.org/10.1016/j.joen.2012.05.005
Nakagawa R.K.L., Alves J.L., Buono V.T.L, Bahia M.G.A. Flexibility and torsional behaviour of rotary nickel-titanium PathFile, RaCe ISO 10, ScoutRaCe and stainless steel K-F ile hand instruments. Int Endod J. 2014; 47 (3): 290-297. https://doi.org/10.1111/iej.12146
Nguyen H.H., Fong H., Paranjpe A., Flake N.M., Johnson J.D., Peters O.A. Evaluation of the resistance to cyclic fatigue among ProTaper Next, ProTaper Universal, and Vortex Blue rotary instruments. J Endod. 2014; 40:1190-1193. https://doi.org/10.1016/j.joen.2013.12.033
Grande N.M., Plotino G., Silla E., Pedulla E., DeDeus G., Gambarini G., et al. Environmental temperature drastically affect flexural fatigue resistance of nickel-titanium rotary files. J Endod. 2017; 43: 1157-1160. https://doi.org/10.1016/j.joen.2017.01.040
Dosanjh A., Paurazas S., Askar M. The effect of temperature on cyclic fatigue of nickel-titanium rotary endodontic instruments. J Endod. 2017; 43: 823-826. https://doi.org/10.1016/j.joen.2016.12.026
Rambabu T. Management of fractured endodontic instruments in root canal: a review. J Sci Dent. 2014; 4 (2): 40-8.
Sung S.Y., Ha J.H., Kwak SW, Abed R.E., Byeon K., Kim H.C. Torsional and cyclic fatigue resistances of glide path preparation instruments: G-file and PathFile. Scanning. 2014; 36: 500-506. https://doi.org/10.1002/sca.21145
Pathfile Brochure, Dentsply. Accessed at 26 February 2021. Available at: https://www.dentsplysirona.com/content/dam/dentsply/pim/manufacturer/Endodontics/Glide_Path__Shaping/Rotary__Reciprocating_Files/Glide_Path/PathFile_Rotary_Files/Pathfile-2rnesuo-en-1402
ScoutRace Brochure, FKG. Accessed at 26 February 2021. Available at: https://www.fkg.ch/sites/default/files/201801_fkg_notice_no104_ScoutRace%26ISO10_EN_FR_DE_web.pdf
Plotino G., Grande N.M., Sorci E., Malagnino V., Somma F. A comparison of cyclic fatigue between used and new Mtwo Ni–Ti rotary instruments. Int Endod J. 2006; 39 (9): 716-723. https://doi: 10.1111/j.1365-2591.2006.01142.x.
Arıcan B., Atav Ates A. Effect of number of uses on the cyclic fatigue resistance of single-file rotary instruments. J Health Sci Med. 2021; 4 (2): 176-180. https://doi.org/10.32322/jhsm.862248
Bulem Ü.K., Kececi A.D., Guldas H.E. Experimental evaluation of cyclic fatigue resistance of four different nickel-titanium instruments after immersion in sodium hypochlorite and/or sterilization. J Appl Oral Sci. 2013; 21: 505-510. https://doi.org/10.1590/1679-775720130083
Logsdon J., Dunlap C., Arias A., Scott R., Peters O.A. Current Trends in Use and Reuse of Nickel-Titanium Engine-driven Instruments: A Survey of Endodontists in the United States. J Endod. 2020; 46 (3): 391-396. https://doi.org/10.1016/j.joen.2019.12.011
Patturaja K., Leelavathi L., Jayalakshmi S. Choice of Rotary Instrument Usage among Endodontists--A Questionnaire Study. Biomedical and Pharmacology Journal 2018; 11 (2): 851-857.
Hülsmann M., Donnermeyer D., Schäfer E. A critical appraisal of studies on cyclic fatigue resistance of engine-driven endodontic instruments. Int Endod J. 2019; 52 (10): 1427-1445. https://doi.org/10.1111/iej.13182
Lopes H.P., Ferreira A.A., Elias C.N., Moreira E.J., de Oliveira J.C.M., Siqueira Jr JF. Influence of rotational speed on the cyclic fatigue of rotary nickel-titanium endodontic instruments. Journal of endodontics 2009; 35 (7): 1013-1016. doi:10.1016/j.joen.2009.04.003
Özyürek T., Uslu G., Gündoğar M., Yılmaz K., Grande N.M., Plotino G. Comparison of cyclic fatigue resistance and bending properties of two reciprocating nickel-titanium glide path files. Int Endod J. 2018b; 51 (9): 1047-1052. https://doi.org/10.1111/iej.12911