multidisciplinary management of subgingival crown–root fracture of an immature permanent maxillary central incisor

this case report describes the multidisciplinary management of subgingival horizontal crown–root fracture of an immature permanent maxillary central incisor in a 10-year-old boy. after removal of the fractured fragment, pulpotomy was performed within 48 h from the injury to promote apexogenesis. the tooth was orthodontically extruded until the fracture line was located above the alveolar bone level. frenectomy, supracrestal fiberotomy, and crown lengthening were performed after adequate stabilization of the extruded tooth for 5 months. finally, the tooth was restored with composite resin by using the acid etch technique. this report highlights that a multidisciplinary treatment approach with strict cooperation among specialists to manage a complicated crown–root fracture can save and restore a traumatized immature permanent tooth. key words: complicated crown–root fracture, immature incisor, traumatized toot