Mandibular First Premolar with Complex Root Canal Anatomy

This case involves the management of a mandibular first premolar exhibiting an uncommon canal configuration, characterized by a common trunk extending through the coronal and middle thirds, followed by an apical bifurcation into two distinct canals: buccal and lingual. Initial shaping was deliberately focused on the main canal pathway, allowing controlled progression toward the apical third. Careful exploration under the operating microscope proved essential in identifying the point of division and ensuring proper access to both branches. The irrigation protocol was subsequently intensified to enhance debridement within the bifurcation area. During the cleaning phase, a mesial accessory canal was identified and incorporated into the treatment. While its obturation may be considered technically satisfying, it is unlikely to significantly impact the…