Evaluation of pediatric rotary files’ shaping ability in primary molars through cone-beam computed tomography: An in vitro analysis

CONTEXT: Pulpectomy preserves primary teeth for function, esthetics, and permanent dentition space maintenance. Root canal preparation risks errors like canal transportation (CT); cone-beam computed tomography (CBCT) offers precise shaping assessment to optimize pediatric endodontic outcomes. AIMS: The aim of this study was to compare CT and centering ability of five pediatric rotary file systems in primary molars using CBCT. SETTINGS AND DESIGN: In vitro study of 90 primary molar root canals, randomized into five groups. SUBJECTS AND METHODS: Systems evaluated Kedo SG Blue, Kedo S Plus, Pro AF Baby Gold, Kedo Nano, and Pedo Flex. Pre- and postinstrumentation CBCT measured canal dimensions at coronal, middle, and apical levels. STATISTICAL ANALYSIS: One-way analysis of variance with Tukey's honestly significant difference post hoc test ( P ≤ 0.05). RESULTS: Kedo Nano exhibited minimal transportation and superior centering ability across all levels. CONCLUSIONS: Kedo Nano provides optimal shaping in primary molars, ideal for precise pulpectomy.