Fig. 2

Screenshots from the endodontic e-learning application showing several steps of the routine root canal treatment on a premolar endodontic tooth model (RCT, DRSK® AB Group, Sweden): a) preparation of the access cavity under rubber dam isolation; b) radiographic length measurement using an ISO 15 K-file; c) enlarging the coronal third of the root canal system; d) sounding of the root canal system using an ISO 06 C-Pilot file®; e) flaring of the root canal walls with a mechanical file system (Reciproc®, VDW, Germany); f) obturation using the cold lateral compaction technique