Article information
Year 2018 Volume 68 Issue 3 Page 197-203
Title:
A Comparison of Centering Ability of One Shape and Reciproc in Simulated Severely Curved Canals
Keyword(s):
Centering ability, Severely curved canals, Rotary instrument, Reciproc, One shape
Abstract:
The aim of this in vitro study was to compare the centering ability of 2 single file systems; One Shape and Reciproc after root canal preparation in 34 acrylic resin simulated severely curved canals. These two instruments use different motions, One Shape uses continuous rotation while Reciproc uses reciprocating motion. Indian ink and methylene blue dye were used to stain the canals before and after root canal preparation. Photographs were taken by dental operating microscope and the pictures superimposed using Adobe Photoshop CS2.0. Canal transportation was defined as the distance (in millimeters) from the pre- to the post-instrumented canal wall measured on both the outer and inner curve of the simulated canal. Measurement of the distances was done in a perpendicular plane to the resin block’s long axis at 10 positions with 1 millimeter increment. Statistical analysis was performed using T-test and Mann-Whitney U test at the 95 % confidence interval. Results found no statistically significant difference in the mean centering ratio at any level (p=0.998). In conclusion, the centering ability of One Shape and Reciproc were not different.