Çanakçı, Burhan CanEr, Özgür2024-06-122024-06-1220182458-9586https://doi.org/10.5505/yeditepe.2018.36035https://search.trdizin.gov.tr/yayin/detay/311979https://hdl.handle.net/20.500.14551/13578Aim: We evaluated the effects of 5% NaOCl solution, 17%EDTA solution, and RC-Prep on the amount of apically extruded debris and the incidence of dentinal cracks during canalpreparation using the ProTaper Next and Reciproc systems.Materials and Methods: In total, 255 human mandibularincisors were divided into eight groups (n=30 each) and acontrol group (n=15). Teeth in groups 1 (NaOCl), 2 (EDTA),3 (RC-Prep), and 4 (EDTA+RC-Prep) were prepared usingthe ProTaper Next system, and those in groups 5 (NaOCl), 6(EDTA), 7 (RC-Prep), and 8 (EDTA+RC-Prep) were preparedusing the Reciproc system. Apical extrusion and crack formation were each examined in 15 teeth from each group. Extruded debris was collected in pre-weighed Eppendorf tubes. Inthe crack detection study, teeth were sectioned horizontallyat 3, 6, and 9 mm from the apex. The slices were then viewedthrough a stereomicroscope at ×25 magnification.Results: Among ProTaper Next groups, the amount of debris extruded was significantly greater in group 1 (NaOCl) thanin groups 2 (EDTA), 3 (RC-Prep), and 4 (EDTA+RC-Prep; p<0.001). No significant difference was detected among groups2, 3, and 4. Among Reciproc groups, the amount of debrisextruded was significantly greater in group 5 (NaOCl) thanin groups 6 (EDTA), 7 (RC-Prep), and 8 (EDTA+RC-Prep; p<0.001). No significant difference was observed among groups6, 7, and 8. The total numbers of cracks were significantly larger in groups 1 (ProTaper – NaOCl), 3 (ProTaper – RC-Prep),5 (Reciproc – NaOCl), and 7 (Reciproc – RC-Prep) than ingroups 2 (ProTaper – EDTA), 4 (ProTaper – EDTA+RC-Prep), 6(Reciproc – EDTA), and 8 (Reciproc – EDTA+RC-Prep).Conclusions: Within the limitations of this study, EDTA solution or RC-Prep causes less apical extrusion. The use of EDTAsolution produced fewer dentinal cracks, and the use of RCPrep alone did not affect.en10.5505/yeditepe.2018.36035info:eu-repo/semantics/openAccessArticle1424350311979