Comparison of the smear layer- and debris-removal abilities and the effects on dentinal microhardness of 5% and 17% EDTA solutions used as final irrigants: in vitro study

Autor: Gizem Demiray Kökçü, Ahmet Güral, Bülent Altunkaynak, Güven Kayaoğlu
Jazyk: English<br />Turkish
Rok vydání: 2016
Předmět:
Zdroj: Acta Odontologica Turcica, Vol 33, Iss 2, Pp 63-68 (2016)
Druh dokumentu: article
ISSN: 2147-690X
DOI: 10.17214/aot.33915
Popis: OBJECTIVE: The aim of this in vitro study was to evaluate the effects on dentinal microhardness, and the smear layer- and debris-removal properties, of 5% and 17% ethylenediaminetetraacetic acid (EDTA) solutions when used as final irrigants. MATERIALS AND METHOD: Seventy extracted single-root human mandibular premolars were endodontically instrumented and distributed into 4 groups, according to the final irrigant: G1: 17% EDTA + 2.6% NaOCl (applied for 3 min and 1 min, respectively), G2: 5% EDTA + 2.6% NaOCl, G3 (control): saline + 2.6% NaOCl, and G4 (control): saline. Teeth from G1–G3 were split longitudinally, and scanning electron micrographs were obtained at 2 and 6 mm from the apex for smear layer and debris analyses. Teeth in all groups were sectioned horizontally, and Vickers microhardness values were measured at 500, 1000, and 1500 µm from the canal lumen. Data were statistically analyzed at the p
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