Comparative evaluation of efficacy in working length determination: Radiography versus Electronic apex locators using and methods with stereomicroscope validation.

BACKGROUND

Accurate determination of the working length (WL) is crucial for successful endodontic treatment. Various methods, including radiography and electronic apex locators (EALs), are employed for WL measurement, each with its advantages and limitations.

AIM

This study aimed to compare the accuracy of WL determination using conventional radiography and the Root ZX Mini EAL against an gold standard method.

MATERIALS AND METHODS

Fifty single-rooted teeth scheduled for extraction were included. WLs were determined using radiography (Grossman's method) and the Root ZX Mini EAL. An method served as the gold standard with WL carried out on extracted teeth under a stereomicroscope. Statistical analysis included Paired samples -test, Chi-square test, and Bland-Altman plots.

RESULTS

The mean WL values were comparable among methods, with slight variations in precision. The Root ZX Mini EAL demonstrated significantly lower mean absolute error compared to radiography ( < 0.001). Accuracy within ± 0.5 mm and ± 1 mm tolerance ranges favored the EAL over radiography ( = 0.04 and = 0.004, respectively).

CONCLUSION

The Root ZX Mini EAL exhibited superior accuracy and lower error rates in WL determination compared to radiography. Integrating EALs alongside radiographic techniques is recommended to optimize WL precision in clinical practice.