Presence of Voids after Continuous Wave of Condensation and Single-cone Obturation in Mandibular Molars: A Micro-computed Tomography Analysis.

Autor:	Iglecias EF; Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil., Freire LG; Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil., de Miranda Candeiro GT; Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil., Dos Santos M; Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil., Antoniazzi JH; Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil., Gavini G; Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, Brazil. Electronic address: ggavini@usp.br.
Jazyk:	angličtina
Zdroj:	Journal of endodontics [J Endod] 2017 Apr; Vol. 43 (4), pp. 638-642. Date of Electronic Publication: 2017 Feb 16.
DOI:	10.1016/j.joen.2016.11.027
Abstrakt:	Introduction: The objective of this study was to assess the presence of voids in mesial root canals of mandibular molar teeth obturated by using the single-cone (SC) and continuous wave of condensation (CWC) obturation techniques, and results were analyzed by using micro-computed tomography. Methods: Twenty-four mandibular molars with fully developed roots and mesial root curvature ranging from 25° to 35° were instrumented by using Reciproc R25 files, and then they were obturated by using the SC and CWC techniques. Specimens were scanned before and after obturation for micro-computed tomography analysis (voxel size, 17.42 μm). After volumetric analysis and tridimensional reconstruction of the root canals, data were analyzed by using analysis of variance and the Tukey test. Results: No significant differences were observed between the 2 techniques in terms of total percentage volume of voids: CWC = 3.91% ± 0.72%; SC = 6.52% ± 1.16% (P > .05). Only in the cervical third, CWC showed a significantly lower percentage of voids when compared with SC, namely 2.86% ± 0.94% vs 8.00% ± 1.86%, respectively (P < .05). Conclusions: The percentage volume of voids was similar in the 2 groups and was influenced by the obturation technique only in the cervical third. (Copyright © 2016 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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