Source of Support: None, Conflict of Interest: None
For a successful endodontic procedure, an accurate diagnosis of the morphology of the root canal system must be determined. Any tooth may have atypical length, number and configuration of roots and canals. Root canal morphology of premolar teeth, either mandibular or maxillary, and discrepancies between first and second premolars have been reported throughout the literature. A case report is presented of the root canal treatment of a mandibular first premolar with type IV canal using conservative approach.