The Unseen Root: Re-Treatment of a Biradicular Mandibular Second Premolar

AbstractMandibular second premolars are typically considered single rooted and single canaled teeth, but anatomical variations can present significant endodontic challenges, especially in retreatment cases. This case report presents the conservative re-treatment of tooth 45 in a 65 year old female with persistent post operative pain. Radiographic evaluation revealed a missed root and canal, along with associated periapical pathology. Upon re-treatment, two distinct roots with one canal each were identified. The case highlights the importance of recognizing rare anatomical variations and using a biologically guided approach to ensure successful outcomes.Keywords: Two rooted premolar, Re-treatment, Mandibular Second Premolar, Missed Canal, Bioceramic sealer