CC BY-NC-ND 4.0 · Eur J Dent 2021; 15(02): 247-252
DOI: 10.1055/s-0041-1723065
Original Article

Safety and Effectiveness of Additional Apical Preparation using a Rotary Heat-treated Nickel–Titanium file with Larger Diameter and Minimum Taper in Retreatment of Curved Root Canals

Jader Camilo Pinto
1   Department of Restorative Dentistry, School of Dentistry, São Paulo State University, São Paulo, Brazil
,
Fernanda Ferrari Esteves Torres
1   Department of Restorative Dentistry, School of Dentistry, São Paulo State University, São Paulo, Brazil
,
Airton Oliveira Santos-Junior
1   Department of Restorative Dentistry, School of Dentistry, São Paulo State University, São Paulo, Brazil
,
Marco Antonio Hungaro Duarte
2   Department of Dentistry, Endodontics and Dental Materials, School of Dentistry, University of São Paulo São Paulo, Brazil
,
Juliane Maria Guerreiro-Tanomaru
1   Department of Restorative Dentistry, School of Dentistry, São Paulo State University, São Paulo, Brazil
,
Mario Tanomaru-Filho
1   Department of Restorative Dentistry, School of Dentistry, São Paulo State University, São Paulo, Brazil
› Author Affiliations
Funding The study was supported by the São Paulo State Research Foundation (FAPESP, 2018/19665-6, 2017/19049-0 and 2019/22885-0) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) - Funding Code 001.

Abstract

Objective The aim of this study was to investigate the effect of additional apical preparation using the ProDesign Logic (PDL) 50/.01 rotary heat-treated nickel–titanium (NiTi) file with a larger diameter and minimal taper for retreatment of curved root canals.

Materials and Methods Mesial curved root canals of 12 mandibular molars were prepared using PDL 25/.06 and filled using the continuous wave of condensation technique and AH Plus sealer. After retreatment using ProDesign S (PDS) 25/.08, PDL 25/.06 and PDL 35/05, a complementary procedure was performed with PDL 50/.01. Microcomputed tomography (micro-CT) scanning was performed before and after retreatment procedures. The cyclic fatigue resistance of unused PDS 25/.08, PDL 25/.06, PDL 35/.05 and PDL 50/.01 instruments (n = 12) was evaluated in a stainless-steel device.

Statistical Analysis Data on the volumes of the root canals and the remaining filling materials were submitted to the paired t-test. Cyclic fatigue resistance data was submitted to one-way ANOVA and Tukey’s tests (α = 0.05).

Results Use of PDL 50/.01 decreased the remaining filling materials in the apical third (p < 0.05). The root canal volume was similar in the cervical and middle thirds before and after preparation using PDL 50/.01 (p > 0.05). PDL 50/.01 presented the highest cyclic fatigue resistance (p < 0.05).

Conclusions Use of the PDL 50/.01 instrument as an additional apical preparation for retreatment of curved root canals improved filling material removal in the apical third, while maintaining the dentin in the cervical and middle thirds. In addition, PDL 50/.01 presented high-flexural resistance.



Publication History

Article published online:
23 February 2021

© 2021. European Journal of Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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  • References

  • 1 Schneider SW. A comparison of canal preparations in straight and curved root canals. Oral Surg Oral Med Oral Pathol 1971; 32 (02) 271-275
  • 2 de Pablo OV, Estevez R, Péix Sánchez M, Heilborn C, Cohenca N. Root anatomy and canal configuration of the permanent mandibular first molar: A systematic review. J Endod 2010; 36 (12) 1919-1931
  • 3 Gagliardi J, Versiani MA, de Sousa-Neto MD, Plazas-Garzon A, Basrani B. Evaluation of the shaping characteristics of ProTaper Gold, ProTaper NEXT, and ProTaper Universal in curved canals. J Endod 2015; 41 (10) 1718-1724
  • 4 Parashos P, Gordon I, Messer HH. Factors influencing defects of rotary nickel-titanium endodontic instruments after clinical use. J Endod 2004; 30 (10) 722-725
  • 5 Alcalde MP, Duarte MAH, Bramante CM. et al. Cyclic fatigue and torsional strength of three different thermally treated reciprocating nickel-titanium instruments. Clin Oral Investig 2018; 22 (04) 1865-1871
  • 6 Frota MM, Bernardes RA, Vivan RR, Vivacqua-Gomes N, Duarte MAH, Vasconcelos BC. Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires. J Appl Oral Sci 2018; 26: e20170215
  • 7 Shen Y, Coil JM, Zhou H, Zheng Y, Haapasalo M. HyFlex nickel-titanium rotary instruments after clinical use: metallurgical properties. Int Endod J 2013; 46 (08) 720-729
  • 8 Tanomaru-Filho M, Galletti Espir C, Carolina Venção A, Macedo-Serrano N, Camilo-Pinto J, Guerreiro-Tanomaru J. Cyclic fatigue resistance of heat-treated nickel-titanium instruments. Iran Endod J 2018; 13 (03) 312-317
  • 9 Pinto JC, Pivoto-João MM, Espir CG, Ramos MLG, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Micro-CT evaluation of apical enlargement of molar root canals using rotary or reciprocating heat-treated NiTi instruments. J Appl Oral Sci 2019; 27: e20180689
  • 10 Arruda EDS, Sponchiado-Júnior EC, Pandolfo MT, Fredson MAC, Roberi Garcia LDF, Marques AA. Apical transportation and centering ability after root canal filling removal using reciprocating and continuous rotary systems: a CBCT study. Eur J Dent 2019; 13 (04) 613-618
  • 11 Zuolo AS, Mello Jr JE, Cunha RS, Zuolo ML, Bueno CE. Efficacy of reciprocating and rotary techniques for removing filling material during root canal retreatment. Int Endod J 2013; 46 (10) 947-953
  • 12 Alves FR, Marceliano-Alves MF, Sousa JC. Silveira SB, Provenzano JC, Siqueira JF Jr. Removal of root canal fillings in curved canals using either reciprocating single- or rotary multi-instrument systems and a supplementary step with the XP-Endo Finisher. J Endod 2016; 42 (07) 1114-1119
  • 13 Rodrigues CT, Duarte MA, de Almeida MM, de Andrade FB, Bernardineli N. Efficacy of CM-wire, M-wire, and nickel-titanium instruments for removing filling material from curved root canals: a micro-computed tomography study. J Endod 2016; 42 (11) 1651-1655
  • 14 Machado AG, Guilherme BPS, Provenzano JC. et al. Effects of preparation with the Self-Adjusting File, TRUShape and XP-endo Shaper systems, and a supplementary step with XP-endo Finisher R on filling material removal during retreatment of mandibular molar canals. Int Endod J 2019; 52 (05) 709-715
  • 15 Martins MP, Duarte MA, Cavenago BC. Kato AS, da Silveira Bueno CE. Effectiveness of the ProTaper Next and Reciproc systems in removing root canal filling material with sonic or ultrasonic irrigation: a micro-computed tomographic study. J Endod 2017; 43 (03) 467-471
  • 16 Rossi-Fedele G, Ahmed HM. Assessment of root canal filling removal effectiveness using micro-computed tomography: a systematic review. J Endod 2017; 43 (04) 520-526
  • 17 Azim AA, Wang HH, Tarrosh M, Azim KA, Piasecki L. Comparison between single-file rotary systems: part 1-efficiency, effectiveness, and adverse effects in endodontic retreatment. J Endod 2018; 44 (11) 1720-1724
  • 18 De-Deus G, Belladonna FG, Zuolo AS. et al. 3-dimensional ability assessment in removing root filling material from pair-matched oval-shaped canals using thermal-treated instruments. J Endod 2019; 45 (09) 1135-1141
  • 19 Canali LCF, Duque JA, Vivan RR, Bramante CM, Só MVR, Duarte MAH. Comparison of efficiency of the retreatment procedure between Wave One Gold and Wave One systems by Micro-CT and confocal microscopy: an in vitro study. Clin Oral Investig 2019; 23 (01) 337-343
  • 20 Delai D, Jardine AP, Mestieri LB. et al. Efficacy of a thermally treated single file compared with rotary systems in endodontic retreatment of curved canals: a micro-CT study. Clin Oral Investig 2019; 23 (04) 1837-1844
  • 21 Barreto MS, Rosa RA, Santini MF. et al. Efficacy of ultrasonic activation of NaOCl and orange oil in removing filling material from mesial canals of mandibular molars with and without isthmus. J Appl Oral Sci 2016; 24 (01) 37-44
  • 22 de Souza PF, Goncalves LCO, Marques AAF, Junior ECS, Garcia LDFR, de Carvalho FMA. Root canal retreatment using reciprocating and continuous rotary nickel-titanium instruments. Eur J Dent 2015; 9 (02) 234-239
  • 23 Gergi R, Sabbagh C. Effectiveness of two nickel-titanium rotary instruments and a hand file for removing gutta-percha in severely curved root canals during retreatment: an ex vivo study. Int Endod J 2007; 40 (07) 532-537
  • 24 Elayouti A, Dima E, Judenhofer MS, Löst C, Pichler BJ. Increased apical enlargement contributes to excessive dentin removal in curved root canals: a stepwise microcomputed tomography study. J Endod 2011; 37 (11) 1580-1584
  • 25 Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg Oral Med Oral Pathol 1984; 58 (05) 589-599
  • 26 Pruett JP, Clement DJ, Carnes DL Jr. Cyclic fatigue testing of nickel-titanium endodontic instruments. J Endod 1997; 23 (02) 77-85
  • 27 Alcalde MP, Tanomaru-Filho M, Bramante CM. et al. Cyclic and torsional fatigue resistance of reciprocating single files manufactured by different nickel-titanium alloys. J Endod 2017; 43 (07) 1186-1191
  • 28 da Frota MF, Espir CG, Berbert FL. et al. Comparison of cyclic fatigue and torsional resistance in reciprocating single-file systems and continuous rotary instrumentation systems. J Oral Sci 2014; 56 (04) 269-275
  • 29 Siqueira Jr JF, Rôças IN, Ricucci D, Hülsmann M. Causes and management of post-treatment apical periodontitis. Br Dent J 2014; 216 (06) 305-312
  • 30 Vieira AR, Siqueira JF Jr, Ricucci D, Lopes WS. Dentinal tubule infection as the cause of recurrent disease and late endodontic treatment failure: a case report. J Endod 2012; 38 (02) 250-254
  • 31 Shahabinejad H, Ghassemi A, Pishbin L, Shahravan A. Success of ultrasonic technique in removing fractured rotary nickel-titanium endodontic instruments from root canals and its effect on the required force for root fracture. J Endod 2013; 39 (06) 824-828
  • 32 Bago I, Plotino G, Katić M, Ročan M, Batinić M, Anić I. Evaluation of filling material remnants after basic preparation, apical enlargement and final irrigation in retreatment of severely curved root canals in extracted teeth. Int Endod J 2020; 53 (07) 962-973
  • 33 Plotino G, Grande NM, Tocci L, Testarelli L, Gambarini G. Influence of different apical preparations on root canal cleanliness in human molars: A SEM study. J Oral Maxillofac Res 2014; 5 (02) e4
  • 34 Srikanth P, Krishna AG, Srinivas S, Reddy ES, Battu S, Aravelli S. Minimal apical enlargement for penetration of irrigants to the apical third of root canal system: a scanning electron microscope study. J Int Oral Health 2015; 7 (06) 92-96
  • 35 Rodrigues RCV, Zandi H, Kristoffersen AK. et al. Influence of the apical preparation size and the irrigant type on bacterial reduction in root canal-treated teeth with apical periodontitis. J Endod 2017; 43 (07) 1058-1063
  • 36 Capar ID, Kaval ME, Ertas H, Sen BH. 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 (04) 535-538
  • 37 Gambarini G, Piasecki L, Ropini P, Miccoli G, Nardo DD, Testarelli L. Cone-beam computed tomographic analysis on root and canal morphology of mandibular first permanent molar among multiracial population in Western European population. Eur J Dent 2018; 12 (03) 434-438
  • 38 Siqueira Jr JF, Rôças IN. Clinical implications and microbiology of bacterial persistence after treatment procedures. J Endod 2008; 34 (11) 1291-1301.e3
  • 39 Silva EJNL, Ferreira VM, Silva CC, Herrera DR, De-Deus G, Gomes BP. Influence of apical enlargement and complementary canal preparation with the Self-Adjusting File on endotoxin reduction in retreatment cases. Int Endod J 2017; 50 (07) 646-651