Canal transportation and straightening of two nickel titanium instruments in curved canals
It is of interest to compare the shaping ability of Hyflex-EDM & OneShape rotary Nickel-Titanium files in human extracted teeth with curved canals.
We used computer digital image analysis system, pre-instrumentation and post instrumentation radiographs of twenty curved root canals, instrumented using One shape and Hyflex EDM each as per manufacturer’s instructions. We measured canal transportation and canal straightening. The statistical analysis of the data was completed using ANalysis Of Variance & Post hoc tests. Results show that one shape showed more canal straightening as compared to Hyflex EDM while both maintained canal curvature equivalently. Thus, Hyflex EDM maintained canal shape better than One shape.Use  to cite references in the manuscript
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