• D D Sungur, E Altundasar, E Uzunoglu, and Z Yilmaz.
• Department of Endodontics, Faculty of Dentistry, Hacettepe University, 06100, Sıhhiye, Ankara, Turkey.
• Niger J Clin Pract. 2016 Mar 1; 19 (2): 267-71.

AimThe aim of this study was to evaluate the influence of different endodontic materials and final irrigation regimens on vertical root fracture (VRF) resistance.Materials And MethodsEighty human teeth were prepared then assigned into two groups (n = 40) according to the final irrigations. G1: 5 mL, 5.25% sodium hypochlorite (NaOCl), G2: 5 mL, 2% chlorhexidine gluconate (CHX). Each group was assigned into four subgroups according to the obturation system used (n = 10): A: iRoot SP/single gutta-percha cone (SGP), B: Only iRoot SP, C: Mineral trioxide aggregate (MTA)-Fillapex/SGP, D: AH26/SGP. The specimens were embedded in acrylic molds and subjected to compressive loading at a rate of 1 mm min until VRF occurred. Data were analyzed via three-way ANOVA tests.ResultsThe statistically significant difference was found among groups (P < 0.05). The G1A and G1B and G1D revealed significantly higher-VRF values than G1C (P = 0.023). The roots filled with MTA-Fillapex revealed lower-VRF values than the other subgroups (P < 0.05). Groups irrigated with NaOCl had significantly lower-VRF values than the groups irrigated with CHX (P < 0.05).ConclusionFinal irrigation regimens could alter VRF resistance of root canals filled with different obturation technique and root canal sealers.

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