A combined management of a rare case of a maxillary lateral incisor with accessory root and deep mesio-radicular groove

This case report describes the combined nonsurgical endodontic retreatment and surgical intervention of a failed root canal treatment associated with a maxillary lateral incisor with an accessory root and deep mesio-radicular groove. A 42-year-old female Malay patient presented with persistent infection associated with deep mesial pocket from her maxillary left lateral incisor (#22). The medical history was noncontributory and the tooth was previously root treated. Following comprehensive clinical and radiographic examination, a combined nonsurgical endodontic retreatment and surgical management of tooth #22 were carried out. The inability to debride the periodontal defect necessitates the amputation of the accessory root, and surgical debridement of the deep radicular groove was carried out. The clinical and radiographic examination 1 year after completion of treatment revealed evidence of healing. The early recognition of root and canal variation, correct diagnosis, and appropriate management of tooth with accessory root and deep radicular groove is essential to ensure favorable treatment outcome