I am creating keynote presentation for next week Endoday meeting in Cluj - Napoca (Romania) and selecting nice and fresh cases for curved and S shape canals. In this case S shape canals were present in medial root of tooth 46. They were connected in apical part of root, and very narrow. I finish shaping protocol on 30.02 NiTi Two rotary files (Poldent company). Hope You will like it. See You in Transylvania!