Radiographic and scanning electron microscopic assessment of root canal filling remnants after endodontic re-instrumentation

Authors

  • Luciane Geanini Pena Santos Department of Dentistry – Federal University of Santa Catarina – Florianopolis – SC – Brazil. http://orcid.org/0000-0003-0531-0828
  • Wilson Tadeu Felippe Department of Dentistry – Federal University of Santa Catarina – Florianopolis – SC – Brazil.
  • Beatriz Dulcineia Mendes Souza Department of Dentistry – Federal University of Santa Catarina – Florianopolis – SC – Brazil.
  • Andrea Cristina Konrath Department of Informatics and Statistics – Federal University of Santa Catarina – Florianopolis – SC – Brazil.
  • Mabel Mariela Rodríguez Cordeiro Department of Morphological Sciences – Federal University of Santa Catarina – Florianopolis – Santa Catarina – Brazil.
  • Mara Cristina Santos Felippe Department of Morphological Sciences – Federal University of Santa Catarina – Florianopolis – Santa Catarina – Brazil.

DOI:

https://doi.org/10.14295/bds.2017.v20i1.1325

Abstract

Objective: Failures in endodontic treatment may occur by several reasons. Endodontic retreatment is an interesting alternative to manage this clinical problem. However, it is not possible to completely remove the root canal filling by any current retreatment technique. The aim of this study was to evaluate the presence of residual root canal filling materials after endodontic re-instrumentation. Material and Methods: Sixty extracted anterior human teeth were prepared by step-back technique with Flexofiles, K-files and Gates-Glidden (GG) burs. Between the use of each file or bur, root canals were irrigated with sodium hypochlorite (NaOCl). Smear layer was removed by irrigation with ethylenediaminetetraacetic acid and NaOCl. After drying with paper points the root canals were randomly divided into 5 groups (n = 12), according to filling material: Resilon cones/Real Seal sealer or gutta-percha cones and Endofill, Sealapex, AH Plus or MTA Fillapex sealers. After one week, root canal fillings were removed using Eucaliptol and K-files. Root canals were re-instrumented with K-files and GG burs sized larger than the first ones. The removal of root canal filling material was analyzed by radiography and scanning electron microscopy (SEM). Statistical analysis was performed using Binary Logistic Regression test (P < 0.05). Results: Radiographic and SEM analysis showed that material from the MTA Fillapex group was better removed than that from Endofill, Sealapex, AH Plus and Real Seal groups. Conclusion: After re-instrumentation, MTA Fillapex group showed less remnants into the root canals than Endofill, Sealapex, AH Plus and Real Seal groups. Residual material was most often found in the apical third.

Keywords

Dental radiography; Endodontic retreatment; Root canal filling materials; Scanning electron microscopy.

Downloads

Download data is not yet available.

Downloads

Published

2017-03-23

How to Cite

1.
Santos LGP, Felippe WT, Souza BDM, Konrath AC, Cordeiro MMR, Felippe MCS. Radiographic and scanning electron microscopic assessment of root canal filling remnants after endodontic re-instrumentation. BDS [Internet]. 2017 Mar. 23 [cited 2025 Aug. 21];20(1):80-91. Available from: https://ojs.ict.unesp.br/index.php/cob/article/view/1325

Issue

Vol. 20 No. 1 (2017): Jan. - Mar. / 2017 - Published February 2017

Section

Clinical or Laboratorial Research

License

Brazilian Dental Science uses the Creative Commons (CC-BY 4.0) license, thus preserving the integrity of articles in an open access environment. The journal allows the author to retain publishing rights without restrictions.

=================

COPYRIGHT TRANSFER AND RESPONSIBILITY STATEMENT
 (PDF)

For all articles published in the BDS journal, copyright is retained by the authors. Articles are licensed under an open-access Creative Commons CC BY 4.0 license, meaning that anyone may download and read the paper for free. In addition, the article may be reused and quoted, provided that the original published version is cited. These conditions allow for maximum use and exposure of the work while ensuring that the authors receive proper credit. All metadata associated with published articles is released under the Creative Commons CC0 Universal Public Domain Dedication.

Before the submission, authors must obtain permission to reproduce any published material (figures, schemes, tables, or any extract of a text) that does not fall into the public domain or for which they do not hold the copyright. Permission should be requested by the authors from the copyright holder (usually the Publisher, please refer to the imprint of the individual publications to identify the copyright holder).

The authors hereby attest that the study is original and does not present manipulated data, fraud, or plagiarism. All names listed made a significant scientific contribution to the study, are aware of the presented data, and agree with the final version of the manuscript. They assume complete responsibility for the ethical aspects of the study.

This text must be printed and signed by all authors. The scanned version should be submitted as supplemental file during the submission process.