COMPARISON OF THE CLEANING EFFICACY OF VARIOUS ROTARY FILES (PROTAPER UNIVERSAL, HERO SHAPER, REVO -S AND MTWO) SYSTEMS IN THE APICAL THIRD OF OVAL SHAPED CANALS.
Dr. Yogesh Kumar*, Dr. Apoorva Bowry, Dr. Neetu Jindal, Dr. Renu Aggarwal, Dr. Kanika Aggarwal
ABSTRACT
Oval-shaped canals are a challenge when using rotary files because buccal and lingual recesses are commonly left
uninstrumented. The purpose of this study was to evaluate the cleaning efficacy of various rotary file
systems (MTwo, Hero-Shaper, Revo-S and Protaper universal ) in the apical third of the oval - shaped
canals. Fifty single-rooted mandibular first premolars were selected and randomly assigned to four groups
according to the rotary file system used and one uninstrumented control group . After decalcification ,
apical 5mm segment was sectioned and histologic processing was done. Analysis was done under optical
microscope. Statistical Analysis was done using ANOVA. Under the conditions of the study, the use of
MTwo and Revo- S resulted in the best canal cleanliness in the apical third with statistically no
significant difference. Protaper universal has the least cleaning efficacy. MTwo and Revo –S seem to be
effective in cleaning the apical third of the canal.
Keywords: Rotary Instrumentation, Tooth apex, Canal preparation.
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