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C-shaped Canal in Second Mandibular Molar: A Case Report.
Vesela R Vasileva1, Tsvetelina Borisova-Papancheva1, Denitsa Zaneva-Hristova2
1Department of Conservative Dentistry and Oral Pathology, Medical University of Varna, Varna, BGR.
Cureus
|May 7, 2025
Summary
Root canal treatment in lower second molars with C-shaped anatomy can be complex. This case study demonstrates successful endodontic therapy using advanced imaging and specialized techniques to preserve the tooth.
Area of Science:
- Endodontics
- Dental Anatomy
Background:
- Root canal treatment is a common dental procedure, but multi-rooted teeth present unique challenges due to root canal system variations.
- The C-shaped root canal system is a frequent anatomical variation in mandibular second molars, complicating endodontic procedures.
- Accurate diagnosis and treatment planning are crucial for managing C-shaped canals, often requiring advanced imaging.
Observation:
- This article presents a clinical case of a lower second molar exhibiting a C-shaped root canal anatomy.
- The tooth presented with joined roots and a longitudinal radicular groove, confirmed by radiography and cone-beam computed tomography (CBCT).
Findings:
- Successful endodontic treatment was achieved using magnification, preliminary radiography, and a specialized system for root canal preparation and obturation.
- The C-shaped canal system was effectively managed, leading to a functional and preserved tooth.
Implications:
- This case highlights the importance of diagnostic tools like CBCT in identifying complex root canal anatomies.
- Appropriate endodontic techniques and materials are essential for successful treatment outcomes in teeth with C-shaped canals.
- Preserving teeth with complex anatomy contributes to maintaining overall oral function and dentition integrity.

