Micro-Computed Tomographic Assessment of Microcrack Formation before and after Instrumentation of Curved Root Canals with Neoniti Rotary Files

Zarean, Parichehr; Özcan, Mutlu; Zarean, Paridokht; Haghani, Seyed Omid; Jahromi, Maryam Zare; Al-Haj Husain, Nadin; Khabiri, Masoud

doi:10.3390/ma15093002

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Zarean, P., Özcan, M., Zarean, P., Haghani, S. O., Jahromi, M. Z., Al-Haj Husain, N., & Khabiri, M. (2022). Micro-Computed Tomographic Assessment of Microcrack Formation before and after Instrumentation of Curved Root Canals with Neoniti Rotary Files. Materials, 15(9), 3002. https://doi.org/10.3390/ma15093002

Abstract

The aim of this study was to assess the microcrack formation of moderately and severely curved root canals following instrumentation with Neoniti rotary files using micro-computed tomography. This in vitro study evaluated 18 extracted sound mandibular molars with two separate mesial canals and foramina in two groups (n = 9) with 5-20° (moderate) and 20-40° (severe) root canal curvature. The number of microcracks in the root canal walls was counted at baseline by micro-CT. Subsequently, the root canals were instrumented with 0.20/0.06