Journal of AdvancedMedical and Dental Sciences Research

Objective: The aim of this study was to compare the diagnostic efficacy of an electronic apex locator (EAL) and radiovisigraphy (RVG) in working length (WL) determination. Materials and Methods:  This study was performed on Single-rooted maxillary/mandibular teeth requiring root canal treatment. After administration of local anesthesia, the teeth were isolated and the pulp cavities were accessed. Canals were irrigated and pulp was extirpated. The working length was then measured for each canal by an electronic apex locator (The Root ZX) and radiovisiography. Paired t-test was used to assess mean difference between radiovisiographic and electronic working length with 0.05 level of significant. Results: Mean working length in apex group was 20.08±2.15 and in RVG group it was 20.42± 2.18. By students paired t test statistically significant difference was found in working length at apex locator and RVG (t=4.26,p=0.0001).Conclusion: Radiovisigraphy demonstrated significant accuracy in determining the working length.
Keywords: Working length, Cementodentinal Junction, Apical Constriction, Radiographic Terminus (RT) Apex locator, Radiovisiography.