EVALUATION OF ACCURACY OF TWO DIFFERENT APEX LOCATORS FOR DETERMINING THE WORKING LENGTH DURING ROOT CANAL RETREATMENT WITH TWO DIFFERENT FILE SYSTEMS: AN IN VITRO STUDY

Dr. Srishti Pandey; Dr. Meenal Gulve; Dr. Swapnil Kolhe; Dr. Gayatri Aher

Volume : X, Issue : III, March - 2020

EVALUATION OF ACCURACY OF TWO DIFFERENT APEX LOCATORS FOR DETERMINING THE WORKING LENGTH DURING ROOT CANAL RETREATMENT WITH TWO DIFFERENT FILE SYSTEMS: AN IN VITRO STUDY

Dr. Srishti Pandey, Dr. Meenal Gulve, Dr. Swapnil Kolhe, Dr. Gayatri Aher

Abstract :

Aim: The aim of this study is to evaluate accuracy of two different apex locators for working length determination during root canal retreatment with two different file systems. Materials and methods: 40 extracted single–rooted human teeth with mature apices were selected for the study. Tooth length was measured with a file, followed by biomechanical preparation and the teeth were obturated using sealer and gutta–percha. Retreatment was performed on the samples prior to determination of working length. Two different rotary files ProTaper retreatment files and R–endo were used for retreatment. After removal of gutta percha working length was determined. The samples were divided into two groups. Working length was measured using two different apex locators; Root ZX and iRoot. Results: Significant difference was found in Root ZX and ProTaper retreatment files. No significant difference was seen in both Root ZX and i–Root with R–Endo files. Conclusion: Root ZX apex locator was more accurate as compared to i–Root apex locator in determining the working length during retreatment