Introduction: To compare the apical extrusion of debris produced during root obturating material removal from severely curved root canals using either Reciproc (REC) or ProTaper Next (PTN) systems. Methods and Materials: Twenty-six mesial canals of lower molars were instrumented, filled and allocated into two groups (n=13). Micro-computed tomographic images were performed to determine the root canal configuration (Vertucci’s type IV) and initial volume of obturation. One Eppendorf tube was assigned per canal and weighed (10-4g) before and after removal of the obturating material. The difference between the initial and final weights was calculated and statistically evaluated. Results: Apical extrusion of debris was confirmed in all samples, and the mean amount of apical extrusion was similar between both groups (0.061±0.014 g in PTN vs. 0.065±0.016 g in REC samples) (P<0.05). Conclusion: Both systems caused apical extrusion of debris with no differences between PTN and REC systems.Keywords: Gutta-Percha; Root Canal Filling Materials; Root Canal Retreatment
Lu Y, Wang R, Zhang L, Li HL, Zheng QH, Zhou XD, et al. Apically extruded debris and irrigant with two Ni-Ti systems and hand files when removing root fillings: a laboratory study. Int Endod J. 2013;46(12):1125-30.
Dincer AN, Er O, Canakci BC. Evaluation of apically extruded debris during root canal retreatment with several NiTi systems. Int Endod J. 2015;48(12):1194-8.
Caviedes-Bucheli J, Castellanos F, Vasquez N, Ulate E, Munoz HR. The influence of two reciprocating single-file and two rotary-file systems on the apical extrusion of debris and its biological relationship with symptomatic apical periodontitis. A systematic review and meta-analysis. Int Endod J. 2016;49(3):255-70.
Silva EJ, Brito ME, Ferreira VD, Belladonna FG, Neves AA, Senna PM, et al. Cytotoxic effect of the debris apically extruded during three different retreatment procedures. J Oral Sci. 2016;58(2):211-7.
Chandrasekar, Ebenezar AV, Kumar M, Sivakumar A. A comparative evaluation of gutta percha removal and extrusion of apical debris by rotary and hand files. J Clin Diagn Res. 2014;8(11):Zc110-4.
Silva EJ, Sa L, Belladonna FG, Neves AA, Accorsi-Mendonca T, Vieira VT, et al. Reciprocating versus rotary systems for root filling removal: assessment of the apically extruded material. J Endod. 2014;40(12):2077-80.
Martinho FC, Freitas LF, Nascimento GG, Fernandes AM, Leite FR, Gomes AP, et al. Endodontic retreatment: clinical comparison of reciprocating systems versus rotary system in disinfecting root canals. Clin Oral Investig. 2015;19(6):1411-7.
Ruddle CJ, Machtou P, West JD. The shaping movement: fifth-generation technology. Dent Today. 2013;32(4):94, 6-9.
Nevares G, de Albuquerque DS, Freire LG, Romeiro K, Fogel HM, Dos Santos M, et al. Efficacy of ProTaper NEXT Compared with Reciproc in Removing Obturation Material from Severely Curved Root Canals: A Micro-Computed Tomography Study. J Endod. 2016;42(5):803-8.
Burklein S, Hinschitza K, Dammaschke T, Schafer E. Shaping ability and cleaning effectiveness of two single-file systems in severely curved root canals of extracted teeth: Reciproc and WaveOne versus Mtwo and ProTaper. Int Endod J. 2012;45(5):449-61.
Canakci BC, Er O, Dincer A. Do the Sealer Solvents Used Affect Apically Extruded Debris in Retreatment? J Endod. 2015;41(9):1507-9.
Canakci BC, Ustun Y, Er O, Genc Sen O. Evaluation of Apically Extruded Debris from Curved Root Canal Filling Removal Using 5 Nickel-Titanium Systems. J Endod. 2016;42(7):1101-4.
Uzunoglu E, Turker SA. Impact of different file systems on the amount of apically extruded debris during endodontic retreatment. Eur J Dent. 2016;10(2):210-4.
Schneider SW. A comparison of canal preparations in straight and curved root canals. Oral Surg Oral Med Oral Pathol. 1971;32(2):271-5.
Pruett JP, Clement DJ, Carnes DL. Cyclic fatigue testing of nickel-titanium endodontic instruments. J Endod. 1997;23(2):77-85.
Tagger M, Tamse A, Katz A, Korzen BH. Evaluation of the apical seal produced by a hybrid root canal filling method, combining lateral condensation and thermatic compaction. J Endod. 1984;10(7):299-303.
Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg Oral Med Oral Pathol. 1984;58(5):589-99.
Myers GL, Montgomery S. A comparison of weights of debris extruded apically by conventional filing and Canal Master techniques. J Endod. 1991;17(6):275-9.
Xavier F, Nevares G, Romeiro MK, Goncalves K, Gominho L, Albuquerque D. Apical extrusion of debris from root canals using reciprocating files associated with two irrigation systems. Int Endod J. 2015;48(7):661-5.
Capar ID, Ertas H, Ok E, Arslan H, Ertas ET. Comparative study of different novel nickel-titanium rotary systems for root canal preparation in severely curved root canals. J Endod. 2014;40(6):852-6.
Gergi R, Osta N, Bourbouze G, Zgheib C, Arbab-Chirani R, Naaman A. Effects of three nickel titanium instrument systems on root canal geometry assessed by micro-computed tomography. Int Endod J. 2015;48(2):162-70.
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;40(11):1860-4.
Giansiracusa Rubini A, Plotino G, Al-Sudani D, Grande NM, Sonnino G, Putorti E, et al. A new device to test cutting efficiency of mechanical endodontic instruments. Med Sci Monit. 2014;20:374-8.
Tanalp J, Kaptan F, Sert S, Kayahan B, Bayirl G. Quantitative evaluation of the amount of apically extruded debris using 3 different rotary instrumentation systems. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2006;101(2):250-7.
Ma J, Al-Ashaw AJ, Shen Y, Gao Y, Yang Y, Zhang C, et al. Efficacy of ProTaper Universal Rotary Retreatment system for gutta-percha removal from oval root canals: a micro-computed tomography study. J Endod. 2012;38(11):1516-20.
Kfir A, Tsesis I, Yakirevich E, Matalon S, Abramovitz I. The efficacy of five techniques for removing root filling material: microscopic versus radiographic evaluation. Int Endod J. 2012;45(1):35-41.
Bonaccorso A, Cantatore G, Condorelli GG, Schafer E, Tripi TR. Shaping ability of four nickel-titanium rotary instruments in simulated S-shaped canals. J Endod. 2009;35(6):883-6.
Altundasar E, Nagas E, Uyanik O, Serper A. Debris and irrigant extrusion potential of 2 rotary systems and irrigation needles. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011;112(4):e31-5.
Mitchell RP, Yang SE, Baumgartner JC. Comparison of apical extrusion of NaOCl using the EndoVac or needle irrigation of root canals. J Endod. 2010;36(2):338-41.
Burklein S, Schafer E. Apically extruded debris with reciprocating single-file and full-sequence rotary instrumentation systems. J Endod. 2012;38(6):850-2.