Clinical reproducibility of a low cost electronic apex locator

Authors

  • Nathalia Vilaça Soares
  • Emmanuel João Nogueira Leal da Silva University of Campinas
  • Claudio Malizzia Alves Ferreira
  • Renato Liess Krebs State University of Rio de Janeiro
  • Tauby de Souza Coutinho-Filho State University of Rio de Janeiro

DOI:

https://doi.org/10.20396/bjos.v11i2.8641422

Keywords:

Apex locator, Working length, Working length determination

Abstract

Aim: To evaluate the clinical reproducibility of three electronic apex locators (EALs), Joypex 5, RomiApex A-15 and Novapex. Methods: Twenty-five patients requiring endodontic treatment were selected. Sixty root canals were measured by the three EALs to determine their respective working length, which was defined as a zero reading on the EAL. A new K-file of the same size was used for each measurement. The file length was fixed with a rubber stop and measured with a caliper to an accuracy of 0.1 mm. Data were analyzed statistically using paired t-tests with the Bonferroni correction and Bland-Altman plot to determine the reproducibility of clinical data among the EALs. Significance level was set at 5%. Results: Mean and standard deviation values measured by the three EALs showed no statistically significant differences. Identical readings by all three EALs were found in 38% of root canals. Fifty percent differed by less than ± 1.0 mm and only 1.3% exceeded a difference of 2.0 mm. Conclusions: The clinical reproducibility of the three devices was confirmed with no significant differences among them, indicating that they are effective for clinical use.

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Author Biographies

Nathalia Vilaça Soares

DDS, Private Practice

Emmanuel João Nogueira Leal da Silva, University of Campinas

DDS, MSc, PhD student, Department of Endodontics, University of Campinas

Claudio Malizzia Alves Ferreira

DDS, Private Practice

Renato Liess Krebs, State University of Rio de Janeiro

DDS, MSc, PhD, Department of Endodontics, State University of Rio de Janeiro

Tauby de Souza Coutinho-Filho, State University of Rio de Janeiro

DDS, MSc, PhD, Department of Endodontics, State University of Rio de Janeiro

Published

2015-10-30

How to Cite

1.
Soares NV, Silva EJNL da, Ferreira CMA, Krebs RL, Coutinho-Filho T de S. Clinical reproducibility of a low cost electronic apex locator. Braz. J. Oral Sci. [Internet]. 2015 Oct. 30 [cited 2022 Oct. 5];11(2):112-5. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641422

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