Pentelescu, C., Colceriu, L., Pastrav, O., Culic, C. and Chisnoiu, R. 2015. In vitro evaluation of root canal preparation with two rotary instrument systems – Pro Taper and Hero Shaper. Medicine and Pharmacy Reports. 88, 3 (Jun. 2015), 395-402. DOI:https://doi.org/10.15386/cjmed-454.