A Comparative Evaluation of Accuracy of the Root Zx Electronic Apex Locator in the Presence of Different Irrigants

Objective: The aim of this study is to evaluate the accuracy of Root ZX in determining working length in presence of 2% chlorhexidine and 5% sodium hypochlorite. Material and Methods: Thirty extracted, single rooted, single canal human teeth were used. Teeth were decoronated at CEJ and actual canal length determined. Then working length measurements were obtained with Root ZX in presence of 2% chlorhexidine and 5% NaOCl. The working length obtained with Root ZX were compared with actual canal length and subjected to statistical analysis. Results: No statistical significant difference was found between actual canal length and Root ZX measurements in presence of 2% chlorhexidine. Highly statistical difference was found between actual canal length and Root ZX measurements in presence of 5% of NaOCl, however all the measurements were within the clinically acceptable range of ±0.5mm. Conclusion: The accuracy of EL measurement of Root ZX within±0.5 mm of AL was consistently high in the presence of 2% chlorhexidine and 5% sodium hypochlorite. Clinical significance: This study signifies the efficacy of ROOT ZX (Third generation apex locator) as a dependable aid in endodontic working length.