Figure 1.

Periapical radiographs of the affected left mandibular first molar illustrating the treatment process and long-term outcome; A) Initial periapical radiograph showing a poorly obturated root canal without a proper coronal seal, an unusual amputation of the mesial root, and related endodontic lesion; B) Radiograph post-treatment demonstrating the placement of the apical plug using calcium-enriched mixture (CEM) cement in mesial root and intra-orifice barriers in distal root, with the access cavity sealed using a sandwich technique; C) The radiograph displaying the restoration of the tooth with the crown cemented in place; D) Follow-up periapical radiograph taken nine years later, revealing complete healing of the endodontic lesion