The “C” in Complexity: A Case Series on Navigating Fan’s Classification of C-shaped Canals

C-shaped canal anatomy is most commonly found in mandibular second molars. The complex anatomy can be challenging to the clinician during negotiation, debridement, and obturation. The fan-shaped regions, transverse anastomoses, fins, and webs of the C-shaped anatomy can be identified and treated with the help of radiographic and clinical diagnosis. Adequate knowledge of the root canal configuration is essential to achieve success in endodontic therapy. This case series highlights the management of four different cases of C-shaped canal configurations categorized on the basis of Fan's Classification. Despite the significant challenges, a positive outcome was achieved in all the cases through specific protocols and modified obturation techniques.