The Management of a C1-Shaped Canal Configuration in a Mandibular Second Molar.

The mandibular second molar has one unique feature regarding internal anatomy: it tends to have a C-shaped configuration in many cases. In mandibular second molar teeth, it is a variance of racial predilection that is frequently observed. During negotiation, debridement, and obturation, the physician is frequently faced with difficulties due to the complexity inherent in this diversity of canal morphology. This case report describes the management of such canal variation, which requires a thorough knowledge of internal anatomy combined with detailed investigations and the operator's skill in cleaning and shaping the canal for better prognostic outcomes.