Comparison of working length determination using cone-beam computed tomography, electronic apex locator and periapical radiograph in teeth with periapical lesion

Context: The accurate determination of working length (WL) has a major impact on the outcome root canal treatment. Aim: aim present clinical study was to compare accuracy using Cone Beam Computed Tomography (CBCT), Periapical radiograph and Electronic apex locator in teeth with periapical lesion. Settings Design: Randomised control trial. Materials Method: This conducted 30 patients an initial diagnosis lesion teeth. involved determined three techniques. In all first detected locator. Secondly, Ingle's method then from CBCT scans. measurements so obtained were tabulated compared statistical analysis. Statistical analysis used: Non-parametric paired T-tests carried out. Results: mean values for WL by electronic locator, radiographs images 20.1833, 20.4667 20.7533 respectively. significant differences found between methods. However, gave more precise readings.