Abstract
Introduction: Root canal shaping is the critical step in endodontic therapy. Perioperative errors, such as false canal stripping, may occur during this step. The endodontic instrumentation based on stainless steel is often the cause of these errors because of the rigidity of the alloy on which it is manufactured. Unlike the endodontic NiTi instrumentation, this allowed better respect of the root canal path, thanks to the flexibility of the NiTi alloy. Materials and Methods: This study aimed to assess the respect of the root canal path by the rotary NITI instruments of the ProTaper® Universal system. This is a retrospective radiological study of 241 canals whose shaping was performed by the rotary ProTaper® Universal system in the Department of Conservative Dentistry & Endodontics at the Dental Treatment and Consultation Center (CCTD), CHIS, Rabat. Results: We noted the occurrence of preoperative incidents at various percentages. The incidence rates were as follows: the ledge with an incidence rate of 3.3%, the false canal with 2.1%, and the stripping with 5.4%; however, zipping had an incidence rate of 1.7%. We also determined a relationship between stripping and a tight preoperative root canal angle. Conclusion: All results suggest the reproducibility of the rotating ProTaper® Universal system.
References
Ruddle C. Cleaning and shaping the root canal system. In: Cohen S, Burns R, eds. Pathways of the Pulp, 8th edn. St Louis, MO: Mosby, 2002: 231–292.
Esposito PT, Cunningham CJ. A comparison of canal preparation with nickel-titanium and stainless steel instruments. J Endod. 1995 Apr;21(4):173-6. https://doi.org/10.1016/s0099-2399(06)80560-1
Glossen CR, Haller RH, Dove SB, del Rio CE. A comparison of root canal preparations using Ni-Ti hand, Ni-Ti engine-driven, and K-Flex endodontic instruments. J Endod. 1995 Mar;21(3):146-51. https://doi.org/10.1016/s0099-2399(06)80441-3
Poulsen WB, Dove SB, del Rio CE. Effect of nickel-titanium engine-driven instrument rotational speed on root canal morphology. J Endod. 1995 Dec; 21(12):609-12. https://doi.org/10.1016/s0099-2399(06)81113-1
Tharuni SL, Parameswaran A, Sukumaran VG. A comparison of canal preparation using the K-file and Lightspeed in resin blocks. J Endod. 1996 Sep; 22(9):474-6. https://doi.org/10.1016/s0099-2399(96)80081-1
Itzhak JB, Solomonov M, LvovskyA, Shemesh A, Levin A, Grande NM, et al. Comparison between stainless steel and nickel–titanium rotary preparation time for primary molar teeth by endodontists and pedodontists.Turk Endod J. janv 2018;3(1):1–4. https://doi.org/10.14744/TEJ.2018.81300
Walia HM, Brantley WA, Gerstein H. An initial investigation of the bending and torsional properties of Nitinol root canal files. J Endod. 1988 Jul; 14(7):346-51. https://doi.org/10.1016/s0099-2399(88)80196-1
AlRahabi MK, Ghabbani HM. Removal of a separated endodontic instrument by using the modified hollow tube-based extractor system: A case report. SAGE Open Med Case Rep. 2020 Feb 21; 8:2050313X20907822. https://doi.org/10.1177/2050313x20907822
Martin D, Amor J, Machtou P. Endodontie mécanisée le système ProTaper® principes et guide d’utilisation. Rev Odont Stomat 2002;31:33-42.
Schilder H. Cleaning and shaping the root canal. Dent Clin North Am. 1974 Apr; 18(2):269-96.
Abu-Tahun I, Al-Rabab'ah MA, Hammad M, Khraisat A. Technical quality of root canal treatment of posterior teeth after rotary or hand preparation by fifth year undergraduate students, The University of Jordan. Aust Endod J. 2014 Dec;40(3):123-30. https://doi.org/10.1111/aej.12069
Peru M, Peru C, Mannocci F, Sherriff M, Buchanan LS, Pitt Ford TR. Hand and nickel-titanium root canal instrumentation performed by dental students: a micro-computed tomographic study. Eur J Dent Educ. 2006 Feb;10(1):52-9. https://doi.org/10.1111/j.1600-0579.2006.00395.x
Ünal GÇ, Maden M, Orhan EO, Sarıtekin E, Teke A. Root canal shaping using rotary nickel-titanium files in preclinical dental education in Turkey. J Dent Educ. 2012 Apr; 76(4):509-13.
Paqué F, Musch U, Hülsmann M. Comparison of root canal preparation using RaCe and ProTaper rotary Ni-Ti instruments. Int Endod J. 2005 Jan;38(1):8-16. https://doi.org/10.1111/j.1365-2591.2004.00889.x
Peters OA, Peters CI, Schönenberger K, Barbakow F. ProTaper rotary root canal preparation: effects of canal anatomy on final shape analysed by micro CT. Int Endod J. 2003 Feb;36(2):86-92. https://doi.org/10.1046/j.1365-2591.2003.00626.x
Zhao D, Shen Y, Peng B, Haapasalo M. Root canal preparation of mandibular molars with 3 nickel-titanium rotary instruments: a micro-computed tomographic study. J Endod. 2014 Nov; 40(11):1860-4. https://doi.org/10.1016/j.joen.2014.06.023
Jafarzadeh H, Abbott PV. Ledge formation: review of a great challenge in endodontics. J Endod. 2007 Oct;33(10):1155-62. https://doi.org/10.1016/j.joen.2007.07.015
Hartmann MS, Barletta FB, Camargo Fontanella VR, Vanni JR. Canal transportation after root canal instrumentation: a comparative study with computed tomography. J Endod. 2007 Aug;33(8):962-5. https://doi.org/10.1016/j.joen.2007.03.019
Greene KJ, Krell KV. Clinical factors associated with ledged canals in maxillary and mandibular molars. Oral Surg Oral Med Oral Pathol. 1990 Oct;70(4):490-7. https://doi.org/10.1016/0030-4220(90)90217-g
Guelzow A, Stamm O, Martus P, Kielbassa AM. Comparative study of six rotary nickel-titanium systems and hand instrumentation for root canal preparation. Int Endod J. 2005 Oct;38(10):743-52. https://doi.org/10.1111/j.1365-2591.2005.01010.x
Sonntag D, Ott M, Kook K, Stachniss V. Root canal preparation with the NiTi systems K3, Mtwo and ProTaper. Aust Endod J. 2007 Aug;33(2):73-81. https://doi.org/10.1111/j.1747-4477.2007.00062.x
Schäfer E, Schulz-Bongert U, Tulus G. Comparison of hand stainless steel and nickel titanium rotary instrumentation: a clinical study. J Endod. 2004 Jun;30(6):432-5. https://doi.org/10.1097/00004770-200406000-00014
Muñoz E, Forner L, Llena C. Influence of operator's experience on root canal shaping ability with a rotary nickel-titanium single-file reciprocating motion system. J Endod. 2014 Apr; 40(4):547-50. https://doi.org/10.1016/j.joen.2013.08.027
Eleftheriadis GI, Lambrianidis TP. Technical quality of root canal treatment and detection of iatrogenic errors in an undergraduate dental clinic. Int Endod J. 2005 Oct; 38(10):725-34. https://doi.org/10.1111/j.1365-2591.2005.01008.x
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 Jun; 35(6): 883-886. https://doi.org/10.1016/j.joen.2009.03.007
Javaheri HH, Javaheri GH. A comparison of three Ni-Ti rotary instruments in apical transportation. J Endod. 2007 Mar; 33(3):284-6. https://doi.org/10.1016/j.joen.2006.05.004
Loizides AL, Kakavetsos VD, Tzanetakis GN, Kontakiotis EG, Eliades G. A comparative study of the effects of two nickel-titanium preparation techniques on root canal geometry assessed by microcomputed tomography. J Endod. 2007 Dec;33(12):1455-9. https://doi.org/10.1016/j.joen.2007.07.019
Yang G, Yuan G, Yun X, Zhou X, Liu B, Wu H. Effects of two nickel-titanium instrument systems, Mtwo versus ProTaper universal, on root canal geometry assessed by micro-computed tomography. J Endod. 2011 Oct; 37(10):1412-6. https://doi.org/10.1016/j.joen.2011.06.024
Kuzekanani M, Walsh LJ, Yousefi MA. Cleaning and shaping curved root canals: Mtwo vs ProTaper instruments, a lab comparison. Indian J Dent Res. 2009 Jul-Sep;20(3):268-70. https://doi.org/10.4103/0970-9290.57355
Vallaeys K, Chevalier V, Arbab-Chirani R. 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. 2016 Jan;104(1):83-8. https://doi.org/10.1007/s10266-014-0176-z
Hashem AA, Ghoneim AG, Lutfy RA, Foda MY, Omar GA. Geometric analysis of root canals prepared by four rotary NiTi shaping systems. J Endod. 2012 Jul;38(7):996-1000. https://doi.org/10.1016/j.joen.2012.03.018
Tambe VH, Nagmode PS, Abraham S, Patait M, Lahoti PV, Jaju N. Comparison of canal transportation and centering ability of rotary protaper, one shape system and wave one system using cone beam computed tomography: An in vitro study. J Conserv Dent. 2014 Nov;17(6):561-5. https://doi.org/10.4103/0972-0707.144605
Duque JA, Vivan RR, Cavenago BC, Amoroso-Silva PA, Bernardes RA, Vasconcelos BC, et al. Influence of NiTi alloy on the root canal shaping capabilities of the ProTaper Universal and ProTaper Gold rotary instrument systems. J Appl Oral Sci. 2017 Jan-Feb;25(1):27-33. https://doi.org/10.1590/1678-77572016-0230
Park HJ, Seo MS, Moon YM. Root canal volume change and transportation by Vortex Blue, ProTaper Next, and ProTaper Universal in curved root canals. Restor Dent Endod. 2017 Dec 24;43(1):e3. https://doi.org/10.5395/rde.2018.43.e3
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2021 Salma El Abbassi, Sanaa Chala , Majid Sakout , Faïza Abdallaoui