Evaluation of the efficacy of TruNatomy, ProTaper retreatment, and RaCe file systems in retreatment of moderately curved mandibular molars: an in vitro study - Akshay, V A; Srirekha, A; Reddy, J; Champa, C; Shetty, A; Srinivasan, A (J Conserv Dent Endod, 2023)