Author's Name:	Dr Priyanka Bhushan, Maj Kundan Kumar & Dr Tanya Nandkeoliar
Subject Area:	Health Science
Subject	Other
Section	Case Studies

RCT, Working Length, Radiograph, Obturation.

Root Canal Treatment is the desired treatment of choice where the functionality and integrity of the natural tooth is to be preserved. Inadequate obturations, insufficient cleaning, unfilled and untreated root space, under or over obturation due to improper measurements of working length are the main causes of endodontic treatment failure. In normal instances and cases working length is measured from specific coronal portion to minor diameter or apical constriction till where the instrumentation and obturation should end. There are three most widely accepted methods for measurement of working length namely radiographic method, Apex locators and tactile perception. Studies have shown an accuracy of 86.7% was obtained within 0.5 mm of the canal length while determining working length with the apex locators. However determining working length by radiographic method is equally accurate for small dental centres located at interior areas where apex locators are not available.