The Effects of Two Different SelfAdjusting File Working Times and Three Different Chelating Agents on the Root Canal Filling Bond Strength

Objective: The aim of this study was to investigate the effects of two different self-adjusting file (SAF) working times and three different chelating agents on the push-out bond strength of root canal fillings in oval root canals. Materials and Methods: Eighty mandibular premolars were selected and distributed into 8 groups (n=10): 4 min SAF (G1), 4 min SAF + 17% ethylenediaminetetraacetic acid (EDTA) (G2), 4 min SAF + 10% citric acid (CA) (G3), 4 min SAF + 1% peracetic acid (PAA) (G4), 6 min SAF (G5), 6 min SAF + 17% EDTA (G6), 6 min SAF + 10% CA (G7), and 6 min SAF + 1% PAA (G8). The root canals were filled using guttapercha and AH Plus root canal sealer, and the teeth were prepared for the push-out assessments using 1.0 mm thick root slices. Loading was performed with a universal testing machine at a speed of 0.5 mm/min; and then, collected data were analyzed statistically (α=0.05). Results: While the different chelating agents significantly affected the push-out bond strength of the root canal filling (p0.05). There were no significant differences among the groups in the apical and middle thirds of the roots (p>0.05). In the coronal thirds, G6 and G8 indicated significantly greater bond strength values than G1 and G5 (p

İki Farklı Self-Adjusting File Çalışma Süresinin ve Üç Farklı Şelasyon Ajanının Kök Kanal Dolgusunun Bağlanma Dayanımı Üzerine Etkileri

Amaç: Bu çalışmanın amacı, oval kök kanallarında iki farklı self-adjusting file (SAF) çalışma süresinin ve üç farklı şelasyon ajanının kök kanal dolgusunun push-out bağlanma dayanımı üzerine etkisinin araştırılmasıdır. Gereç ve Yöntemler: Seksen adet mandibular premolar diş seçildi ve 8 gruba dağıtıldı (n=10): 4 dk SAF (G1), 4 dk SAF + %17’lik etilendiamintetraasetik asit (EDTA) (G2), 4 dk SAF + %10’luk sitrik asit (SA) (G3), 4 dk SAF + %1’lik perasetik asit (PAA) (G4), 6 dk SAF (G5), 6 dk SAF + %17’lik EDTA (G6), 6 dk SAF + %10’luk SA (G7), 6 dk SAF + %1’lik PAA (G8). Kök kanalları güta-perka ve AH Plus kanal patı kullanılarak dolduruldu ve dişler 1,0 mm kalınlıklı kök kesitleri kullanılarak push out incelemesi için hazırlandı. Yükleme işlemi bir üniversal test cihazı kullanılarak 0,5 mm/dk hızında gerçekleştirildi ve istatistiksel yorumlamalar yapıldı (α=0,05). Bulgular: Farklı şelasyon ajanları kök kanal dolgusunun push-out bağlanma dayanımını anlamlı olarak etkilerken (p0,05). Köklerin apikal ve orta üçlülerinde gruplar arasında anlamlı farklılık yoktu (p>0,05). Koronal üçlülerde, G6 ve G8, G1 ve G5’ten anlamlı olarak daha yüksek bağlanma dayanımları gösterdi (p

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Chugal NM, Clive JM, Spangberg LS. A prognostic model for assessment of the outcome of endodontic treatment: Effect of biologic and diagnostic variables. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2001; 913: 342-52.

Kuruvilla A, Jaganath BM, Krishnegowda SC, Ramachandra PK, Johns DA, Abraham A. A comparative evaluation of smear layer removal by using edta, etidronic acid, and maleic acid as root canal irrigants: An in vitro scanning electron microscopic study. J Conserv Dent 2015; 18: 247-51.

Torabinejad M, Handysides R, Khademi AA, Bakland LK. Clinical implications of the smear layer in endodontics: a review. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2002; 94: 658-66.

Elnaghy AM. Effect of QMix irrigant on bond strength of glass fibre posts to root dentine. Int Endod J 2014; 47: 280-9.

Taneja S, Kumari M, Anand S. Effect of QMix, peracetic acid and ethylenediaminetetraacetic acid on calcium loss and microhardness of root dentine. J Conserv Dent 2014; 17: 155-8.

Paque F, Ganahl D, Peters OA. Effects of root canal preparation on apical geometry assessed by micro-computed tomography. J Endod 2009; 35: 1056-9.

Versiani MA, Pecora JD, de Sousa-Neto MD. Flat-oval root canal preparation with self-adjusting file instrument: a microcomputed tomography study. J Endod 2011; 37: 1002-7.

Robinson JP, Lumley PJ, Cooper PR, Grover LM, Walmsley AD. Reciprocating root canal technique induces greater debris accumulation than a continuous rotary technique as assessed by 3-dimensional micro-computed tomography. J Endod 2013; 39: 1067-70.

Metzger Z. From fles to SAF: 3D endodontic treatment is possible at last. Alpha Omegan 2011; 104: 36-44.

Hof R, Perevalov V, Eltanani M, Zary R, Metzger Z. The selfadjusting file (SAF). Part 2: mechanical analysis. J Endod 2010; 36: 691-6.

Pereira RD, Brito-Junior M, Leoni GB, Estrela C, de Sousa-Neto MD. Evaluation of bond strength in single-cone fillings of canals with different cross-sections. Int Endod J 2017; 50: 177-83.

De-Deus G, Souza EM, Barino B, Maia J, Zamolyi RQ, Reis C, et al. The self-adjusting file optimizes debridement quality in ovalshaped root canals. J Endod 2011; 37: 701-5.

Metzger Z, Teperovich E, Cohen R, Zary R, Paque F, Hulsmann M. The self-adjusting file (SAF). Part 3: removal of debris and smear layer-A scanning electron microscope study. J Endod 2010; 36: 697-702.

Paque F, Laib A, Gautschi H, Zehnder M. Hard-tissue debris accumulation analysis by high-resolution computed tomography scans. J Endod 2009; 35: 1044-7.

Aranda-Garcia AJ, Kuga MC, Vitorino KR, Chavez-Andrade GM, Duarte MA, Bonetti-Filho I, et al. Effect of the root canal final rinse protocols on the debris and smear layer removal and on the push-out strength of an epoxy-based sealer. Microsc Res Tech 2013; 76: 533-7.

Kara Tuncer A. Effect of QMix 2in1 on sealer penetration into the dentinal tubules. J Endod 2015; 41: 257-60.

Violich DR, Chandler NP. The smear layer in endodontics - a review. Int Endod J 2010; 43: 2-15.

Chassot AL, Poisl MI, Samuel SM. In vivo and in vitro evaluation of the efficacy of a peracetic acid-based disinfectant for decontamination of acrylic resins. Braz Dent J 2006; 17: 117-21.

Lottanti S, Gautschi H, Sener B, Zehnder M. Effects of ethylenediaminetetraacetic, etidronic and peracetic acid irrigation on human root dentine and the smear layer. Int Endod J 2009; 42: 335-43.

De-Deus G, Souza EM, Marins JR, Reis C, Paciornik S, Zehnder M. Smear layer dissolution by peracetic acid of low concentration. Int Endod J 2011; 44: 485-90.

Zehnder M, Schmidlin P, Sener B, Waltimo T. Chelation in root canal therapy reconsidered. J Endod 2005; 31: 817-20.

Calt S, Serper A. Time-dependent effects of EDTA on dentin structures. J Endod 2002; 28: 17-9.

Di Lenarda R, Cadenaro M, Sbaizero O. Effectiveness of 1 mol L-1 citric acid and 15% EDTA irrigation on smear layer removal. Int Endod J 2000; 33: 46-52.

Gutmann JL, Saunders WP, Nguyen L, Guo IY, Saunders EM. Ultrasonic root-end preparation. Part 1. SEM analysis. Int Endod J 1994; 27: 318-24.

Machado-Silveiro LF, Gonzalez-Lopez S, Gonzalez-Rodriguez MP. Decalcification of root canal dentine by citric acid, EDTA and sodium citrate. Int Endod J 2004; 37: 365-9.

Scelza MF, Teixeira AM, Scelza P. Decalcifying effect of EDTA-T, 10% citric acid, and 17% EDTA on root canal dentin. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2003; 95: 234-6.

Neelakantan P, Subbarao C, Subbarao CV, De-Deus G, Zehnder M. The impact of root dentine conditioning on sealing ability and push-out bond strength of an epoxy resin root canal sealer. Int Endod J 2011; 44: 491-8.

Ureyen Kaya B, Kececi AD, Orhan H, Belli S. Micropush-out bond strengths of gutta-percha versus thermoplastic synthetic polymer-based systems - an ex vivo study. Int Endod J 2008; 41: 211-8.

Metzger Z, Teperovich E, Zary R, Cohen R, Hof R. The selfadjusting file (SAF). Part 1: respecting the root canal anatomy--a new concept of endodontic files and its implementation. J Endod 2010; 36: 679-90.

Akcay I, Yigit-Özer S, Adigüzel O, Kaya S. Deformation of the selfadjusting file on simulated curved root canals: a time-dependent study. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 112: 12-7.

Alves FR, Almeida BM, Neves M, Rôças IN, Siqueira JF Jr. Timedependent Antibacterial Effects of the Self-Adjusting File Used with Two Sodium Hypochlorite Concentrations. J Endod 2011; 37: 1451-5.