A 24-year-Old Boy with Previously Treated and Aberrant Root Canal Anatomy in Mandibular Left First Premolar Tooth

Perfect cleaning and shaping is the key to successful root canal treatment. Therefore, a careful understanding of the internal anatomy and structure of the root canal system is an important factor when performing cleaning and cosmetic procedures. Mandibular premolars are among the most complicated teeth to treat with root canals due to their abnormal root canal anatomy. Furthermore, it varies in different ethnic groups. Therefore, it is needed to evaluate and search for an abnormal root canal anatomy in a failed root canal. In light of these observations, this case report provides a case of previously root canal treated mandibular first premolar tooth which was failed due to different root canal patterns. The tooth was subjected to re-root canal treatment and after completion of the therapy, the tooth was symptomless and patient was referred to the Department of Prosthodontics for a full veneer crown.