Abstract

Objective: The aim of the present study was to compare apical transportation and centering ability of one curve (OC) system with other heat treated NiTi rotary systems; Protaper next (PTN), Hyflex EDM (HFEDM) and 2shape (TS), using CBCT scanning.

Methodology: Forty mesiobuccal canals of mandibular molars with an angle of curvature ranging from (25°- 40°) were divided equally according to file system used in canal preparation into 4 groups of 10 samples each: PTN group; HFEDM group, TS group and OC group. Samples were scanned using CBCT scanner before and after preparation to evaluate root canal transportation and centering ratio at 2, 3, 4 and 5 mm from the apex. The significance level was set at P ≤ 0.05.

Results: PTN showed highest statistically significant transportation value than other file systems at 5mm level. There was no statistically significant difference in transportation between HFEDM, TS and OC file systems at all studied levels. There was no statistically significant difference in centering ability between 4 systems at 2, 3 and 4 mm. At 5 mm level, OC and TS showed better centering ability than PTN and HFEDM.

Conclusion: The four tested systems safely prepared severely curved root canals, PTN showed highest transportation value and least centering ratio value, while HFEDM, TS and OC showed similar performance.

Keywords: ProTaper Next; HyFlex EDM; 2Shape; One Curve; Transportation; Centering Ability

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Citation

Citation: Abdel Hamid E. “Comparative Evaluation of Apical Transportation and Centering Ability of 4 NITI Rotary Systems with Different Metallurgy in Severely Curved Root Canals". Acta Scientific Dental Sciences 5.1 (2021): 03-10.

Copyright

Copyright: © 2021 Abdel Hamid E. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.