Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
Vol. 11, No. 2, 2012, pp. 112-115
Bioline Code: os12022
Full paper language: English
Document type: Research Article
Document available free of charge
Brazilian Journal of Oral Sciences, Vol. 11, No. 2, 2012, pp. 112-115
© Copyright 2012 Braz J Oral Sci.
Clinical reproducibility of a low cost electronic apex locator|
Soares, Nathalia Vilaça; da Silva, Emmanuel João Nogueira Leal; Ferreira, Claudio Malizzia Alves; Krebs, Renato Liess & Coutinho-Filho, Tauby de Souza
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.
apex locator, working length, working length determination
Alternative site location: http://www.fop.unicamp.br/brjorals