TITLE

Ex vivo comparison of three electronic apex locators to determine working length in endodontic treatment

AUTHOR(S)
Bruno Miguita, Kenner; Aranha de Ara£jo, Roberta; Sigrist De Martin, Alexandre; Eduardo da Silveira Bueno, Carlos; Sanches Cunha, Rodrigo
PUB. DATE
December 2011
SOURCE
Endodontic Practice Today;2011, Vol. 5 Issue 4, p281
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Aim: This ex vivo study evaluated the accuracy of three electronic apex locators (Root ZX® II, Propex II® and Elements Diagnostic®) in determining working length by comparing their findings with direct measurements.Materials and methods: Forty single-rooted human teeth underwent coronal access and cervical preparation. To determine actual working length, a size 10 K-file was inserted to the point where its tip was visible at the apical foramen under 8× magnification; a rubber stop was placed at the level of the incisal edge, and working length was measured with a millimetre endodontic ruler. The teeth were then mounted on a piece of floral foam soaked in 0.9% sodium chloride, and electronic measurements were made using the foramen identification criterion for apex location of the Root ZX II,Propex II and Elements Diagnostic units.Results: Analysis of variance (ANOVA; P = 0.9987) showed no statistically significant differences between the three electronic apex locators at either tolerance level. Root ZX II had a 93% accuracyrate, Propex II 90% and Elements Diagnostic 91%. No statistically significant differences were found between the locators being tested (P > 0.05), with a safety margin of ± 0.5 mm.Conclusion: The three locators had acceptable accuracy rates for clinical use.
ACCESSION #
74287580

 

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