While it's well-known that maxillary central incisors typically have one root canal, this case paper reports the unusual occurrence of an additional root canal alongside the primary canal. The report provides a detailed illustration of the two- and three-dimensional radiographic interpretation, diagnosis, and endodontic management of a symptomatic maxillary central incisor featuring an accessory root, complete with an 18-month follow-up. Importantly, the case underscores the value of utilizing a 3D-printed model for both treatment planning and educational purposes.
Keywords: Root canal therapy, 3D-Printing, Cone beam computed tomography, Endodontic education.