Extrusion of Debris from Curved Root Canals Instrumented up to Different Working Lengths Using Different Reciprocating Systems

João Daniel Mendonça de Moura; Carlos Eduardo da Silveira Bueno; Carlos Eduardo Fontana; Rina Andrea Pelegrine

doi:10.1016/j.joen.2019.03.002

Extrusion of Debris from Curved Root Canals Instrumented up to Different Working Lengths Using Different Reciprocating Systems

J Endod. 2019 Jul;45(7):930-934. doi: 10.1016/j.joen.2019.03.002. Epub 2019 May 17.

Authors

João Daniel Mendonça de Moura¹, Carlos Eduardo da Silveira Bueno², Carlos Eduardo Fontana³, Rina Andrea Pelegrine¹

Affiliations

¹ Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil.
² Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil. Electronic address: carlosesbueno@terra.com.br.
³ Department of Endodontics, School of Dentistry, Pontifical Catholic University of Campinas, Campinas, São Paulo, Brazil.

PMID: 31109752
DOI: 10.1016/j.joen.2019.03.002

Abstract

Introduction: The aim of this study was to evaluate the extrusion of debris associated with the use of the Reciproc (VDW GmbH, Munich, Germany) and WaveOne Gold (Dentsply Maillefer, Ballaigues, Switzerland) reciprocating systems in curved canals instrumented up to different working lengths (WLs).

Methods: Sixty mesial roots of extracted mandibular first molars with mesiobuccal canals having curvatures between 10° and 20° and independent foramina were randomly distributed into 4 experimental groups (n = 15) according to WL and the instrumentation system used: RC0, Reciproc and WL at the apical foramen; RC1, Reciproc and WL at 1 mm short of the apical foramen; WOG0, WaveOne Gold and WL at the apical foramen; and WOG1, WaveOne Gold and WL at 1 mm short of the apical foramen. The canals were irrigated with double-distilled water throughout the preparation. Each root was fit into an Eppendorf tube to collect the debris extruded through the foramen during instrumentation. After instrumentation, the roots were removed from the tubes, and the weight of the debris was obtained by subtracting the initial weight of the tubes from their final weight. The data were submitted to the analysis of variance parametric test complemented by the Tukey test.

Results: No statistically significant difference was observed between the 4 experimental groups regarding the amount of debris extruded (P > .05).

Conclusions: The 2 reciprocating systems tested were associated with similar amounts of apically extruded debris, regardless of the working length used in the instrumentation.

Keywords: Apical foramen; instrumentation; root canal preparation.

MeSH terms

Dental Pulp Cavity*
Root Canal Preparation*
Tooth Apex
Tooth Root