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Brazilian Journal of Oral Sciences

versão On-line ISSN 1677-3225

Resumo

SOARES, Nathalia Vilaça et al. Clinical reproducibility of a low cost electronic apex locator. Braz. J. Oral Sci. [online]. 2012, vol.11, n.2, pp. 112-115. ISSN 1677-3225.

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.

Palavras-chave : apex locator; working length; working length determination.

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