Dental trauma may be considered the main reason for the permanent tooth loss.Root fracture can occur due to dental trauma from motor accidents,sports activity or violence. Horizontal root fracture results in 0.5 to 7% of all traumatic injuries and the upper anterior region are most commonly affected. The prognosis of  tooth with  horizontal  root fracture  is influenced by various factors such as patients age, stage of root development, the amount of separation of the fragments. Four types of healing of root fracture have been described in the literature depending on the amount of separation of the fragments, the severity of the injury and the healing capacity of the pulp.  This case report describes the calcific healing of the middle horizontal root fracture in both maxillary central incisors following endodontic treatment .