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01-02-2020 | Agitation | Original Article

Distribution of sodium hypochlorite throughout the mesial root canal system of mandibular molars after adjunctive irrigant activation procedures: a micro-computed tomographic study

Authors: Juan Pacheco-Yanes, José C. Provenzano, Marília F. Marceliano-Alves, Isbelia Gazzaneo, Alejandro R. Pérez, Lúcio S. Gonçalves, José F. Siqueira Jr

Published in: Clinical Oral Investigations | Issue 2/2020

Abstract

Objectives

To evaluate and compare irrigant distribution throughout the root canal system of mesial roots of mandibular molars after application of distinct adjunctive irrigant activation procedures.

Materials and methods

Fifteen extracted mandibular molars presenting Fan’s type II, III, or IV isthmus configurations were selected. The canals were initially enlarged and cleaned. The same specimens were subjected to conventional positive pressure irrigation (PPI) followed by adjunctive irrigation approaches: passive ultrasonic irrigation (PUI), mechanical activation with the XP-endo Finisher instrument, and a control group in which the irrigant remained in the canal with no activation. Retention time for the irrigant was the same for all groups. Sodium hypochlorite mixed with a contrast medium (Omnipaque 300) was used as the irrigant. Before and immediately after the adjunctive irrigation, micro-computed tomographic (micro-CT) scans were taken to evaluate the volume of the entire root canal system that was filled by the irrigant. An exclusive analysis was also done for the isthmus area.

Results

Analysis of the entire root canal system showed that the XP-endo Finisher instrument promoted better distribution of the irrigant than PUI and the control group (p < 0.01). PUI was not significantly different from the control group (p > 0.05). A separate analysis of the isthmus area showed no significant difference between the adjunctive irrigation methods and the control (p > 0.05).

Conclusions

The XP-endo Finisher instrument promoted better distribution of irrigant throughout the root canal system, especially in the apical canal segment, when compared to PUI. However, the tested approaches did not differ as to the ability to drive irrigants into the isthmus area.

Clinical relevance

This study highlighted that the XP-endo Finisher instrument presented a better performance to distribute irrigant throughout the root canal system, especially in the apical canal segment compared to positive pressure irrigation and PUI.

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Title: Distribution of sodium hypochlorite throughout the mesial root canal system of mandibular molars after adjunctive irrigant activation procedures: a micro-computed tomographic study
Authors: Juan Pacheco-Yanes
José C. Provenzano
Marília F. Marceliano-Alves
Isbelia Gazzaneo
Alejandro R. Pérez
Lúcio S. Gonçalves
José F. Siqueira Jr
Publication date: 01-02-2020
Publisher: Springer Berlin Heidelberg
Keyword: Agitation
Published in: Clinical Oral Investigations / Issue 2/2020
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-019-02970-5

2024 ASCO Annual Meeting

Springer Medicine

Distribution of sodium hypochlorite throughout the mesial root canal system of mandibular molars after adjunctive irrigant activation procedures: a micro-computed tomographic study

Abstract

Objectives

Materials and methods

Results

Conclusions

Clinical relevance

2024 ASCO Annual Meeting

Springer Medicine

Abstract

Objectives

Materials and methods

Results

Conclusions

Clinical relevance

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