Cone-beam Computed Tomographic Analysis of Apical Transportation and Centering Ratio of TruNatomy and V-taper 2H NiTi Rotary Systems in Curved Canals: An In Vitro Study
Mohammed Naumaan Mujawar, Manje Gowda, Jayalakshmi Kulambi Basavangowda, Prasanna Latha Nadig, Shibani Shetty
Citation Information :
Mujawar MN, Gowda M, Basavangowda JK, Nadig PL, Shetty S. Cone-beam Computed Tomographic Analysis of Apical Transportation and Centering Ratio of TruNatomy and V-taper 2H NiTi Rotary Systems in Curved Canals: An In Vitro Study. J Oper Dent Endod 2022; 7 (1):1-5.
Aim: This study aimed to compare the canal transportation and centering ratio using cone-beam computed tomography (CBCT) in the preparation of curved root canals after instrumentation with TruNatomy (TN) and V-Taper 2H (VT) files.
Materials and methods: Twenty mandibular molar mesiobuccal canals with an angle of curvature ranging from 20 to 40° were split into two groups of 10 samples each based on the file system used to prepare the canals: TN (group I) and VT (group II). The teeth were instrumented according to the manufacturer's instructions up to 26 no. in TN and 25 no. in VT apical preparation. Before and after preparation, canals were examined using CBCT to assess the transportation and centering ratio at 3, 5, and 7 mm from the apex. The degree of transportation and the capacity for centering were evaluated. The two groups were statistically compared with the Mann–Whitney and Friedman's tests.
Results: Both instruments did not deviate from the original canal curvature having no significant difference in the apical transportation and remained centered in the canal.
Conclusion: TruNatomy and VT instruments produced less transportation and remained centered around the original canal to a great degree due to their cross-section, heat treatment, and reduced taper.
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