Abstract
Introduction: Internal root resorption, or intracanal reabsorption, odontoblastoma, and internal granuloma, represents a rare pathological process. Since internal and external resorption therapy is different, a careful differential diagnosis, which is mainly based on radiographic interpretation, is of utmost importance and is complemented by the patient's history and clinical examination. Discussion: Cone-Beam Computed Tomography is a very important tool, since it gives greater reliability to the diagnosis, classification and treatment planning. Case Report: The objective of this study was to describe a clinical case of endodontic retreatment accompanied by the repair of an internal root resorption with the use of bioceramic restorative cement, which provided the functional return of the involved tooth in order to address the relevant aspects of the diagnosis and treatment.