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ORIGINAL ARTICLE
Year : 2016  |  Volume : 4  |  Issue : 2  |  Page : 39-43

Comparison of working length determination using apex locator and manual method - ex vivo study


1 Department of Endodontics, Superior School of Health Sciences, State University of Amazonas, Manaus, AM, Brazil
2 Department of Endodontics, Federal University of Amazonas, Manaus, AM, Brazil
3 Department of Physiology and Pathology, Araraquara School of Dentistry, Univ Estadual Paulista, Araraquara, SP, Brazil

Correspondence Address:
Lucas da Fonseca Roberti Garcia
Rua Siro Kaku, n 72, Apto. 73, Bairro Jardim Botanico, CEP: 14021-614, Ribeirao Preto, Sao Paulo
Brazil
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2348-1471.184730

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Background: Electronic apex locators can be a useful adjunct with a high level of accuracy for determining the real root canal length in clinical practice. Aim: The objective of this ex vivo study was to evaluate the accuracy of electronic apex locator for real working length determination in comparison with a manual method. Materials and Methods: Forty single-rooted teeth were used in this study. After coronal access, manual measurement of the real working length of each root canal was performed by placing a size 10 K-file, using as reference the exceeding of the file in the apical foramen. The file was retracted by 1 mm, and its extension was measured to determine the real working length. The electronic measurement of the working length was performed in the same teeth using the Joypex 5 electronic apex locator. Results: Data were submitted to statistical analysis (Wilcoxon-Mann-Whitney test, P > 0.05) and no significant difference was found between the electronic and manual methods (P > 0.05). Conclusions: It may be concluded that the electronic apex locator is a reliable and accurate method for determining the working length of root canals, optimizing the odontometric procedure in clinical practice.


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