AIM: To evaluate ex vivo the accuracy of the iPex multi-frequency electronic apex locator (NSK Ltd, Tokyo, Japan) for working length determination in primary molar teeth. METHODOLOGY: One calibrated examiner determined the working length in 20 primary molar teeth (total of 33 root canals). Working length was measured both visually, with the placement of a K-file 1 mm short of the apical foramen or the most coronal limit of root resorption, and electronically using the electronic apex locator iPex, according to the manufacturers' instructions. Data were analysed statistically using the intraclass correlation (ICC) test. RESULTS: Comparison of the actual and the electronic measurements revealed high correlation (ICC = 0.99) between the methods, regardless of the presence or absence of physiological root resorption. CONCLUSIONS: In this laboratory study, the iPex accurately identified the apical foramen or the apical opening location for working length measurement in primary molar teeth.
AIM: To evaluate ex vivo the accuracy of the iPex multi-frequency electronic apex locator (NSK Ltd, Tokyo, Japan) for working length determination in primary molar teeth. METHODOLOGY: One calibrated examiner determined the working length in 20 primary molar teeth (total of 33 root canals). Working length was measured both visually, with the placement of a K-file 1 mm short of the apical foramen or the most coronal limit of root resorption, and electronically using the electronic apex locator iPex, according to the manufacturers' instructions. Data were analysed statistically using the intraclass correlation (ICC) test. RESULTS: Comparison of the actual and the electronic measurements revealed high correlation (ICC = 0.99) between the methods, regardless of the presence or absence of physiological root resorption. CONCLUSIONS: In this laboratory study, the iPex accurately identified the apical foramen or the apical opening location for working length measurement in primary molar teeth.
Authors: Bruno Carvalho de Vasconcelos; Michelli de Medeiros Bueno; Suyane Maria Luna-Cruz; Marco Antonio Hungaro Duarte; Carlos Augusto de Oliveira Fernandes Journal: J Appl Oral Sci Date: 2013 Mar-Apr Impact factor: 2.698