Pradhan, B. .; Gao, Y.; Gao, Y.; Guo, T. .; Cao, Y. .; He, J. Broken Instrument Removal from Mandibular First Molar With Conebeam Computed Tomography Based Pre-Operative Computer-Assisted Simulation: A Case Report. J Nepal Med Assoc 2021, 59, 795-798.