Intentional replantation of maxillary molar affected by an intractable periapical abscess related to a radicular groove: A case report

We presented a case of an intractable periapical abscess in the area of the maxillary first molar. The tooth had no evidences of dental caries, restoration, or fracture, and responded well to a pulp vitality test. However, a radiographic examination revealed radiolucency in the apical portion of the distal root. Computerized tomography (CT) revealed that the tooth had 1 buccal and 2 palatal roots fused together, expressing a U-shaped. Further, a radicular groove that reached to the crown portion of the distal surface was found. Radiolucency was observed in the area adjacent to the radicular groove and in the U-shaped region. We finally performed an intentional replantation, since conventional periodontic and endodontic procedures were unsuccessful. One year postoperatively, the patient had no clinical or radiographic symptoms.