Abstract :
The present study was done to compare canal transportation using three newer rotary Ni-Ti file systems; Protaper Next, Twisted file & Neo Ni-Ti using CBCT. In this study 90 freshly extracted mandibular premolars were de-coronated and divided into three groups of 30 samples each for instrumentation with Twisted file, Protaper Next & Neo Ni-Ti file systems. The roots were embedded in modelling wax and scanned by CBCT to determine pre and post instrumentation measurements at three levels (3, 7 and 11 mm) from the apex respectively. Canal transportation was least in Protaper Next group at all the three levels while Neo Ni-Ti showed highest transportation followed by the Twisted file system. Neo Ni-Ti group showed significant transportation at all levels when compared with Protaper Next. Amongst the three file systems, Protaper Next group showed the best result within limitations of this study.
Keyword :
Canal transportation, rotary Ni-Ti files, CBCT.