Innovative techniques in fiberglass post removal: cone beam computed tomography combined with the guided endodontics: a case report

Abstract Objective: This case report describes the effectiveness of utilizing a guided endodontics (GE) with cone beam computed tomography (CBCT) for removal a fiberglass post. Case report: A 42-year-old male patient presented with discomfort in the maxillary left central incisor. Clinical and radiographic assessments revealed tooth 21 with a permanent core material retained by a fiberglass post, accompanied by apical radiolucency. A conservative fully guided approach was proposed for nonsurgical root canal retreatment and fiberglass post removal. Following the acquisition of CBCT images and a cast surface scan, their data were integrated using implant planning software and overlaid. By employing the guided access technique, the post could be removed with enhanced precision and efficiency, facilitating the completion of endodontic retreatment. Conclusion This method exhibited a high level of reliability, enabling the fiberglass post's removal and thorough root canal disinfection without unnecessary dentin removal, thus ensuring a safer endodontic retreatment. Moreover, the GE template created through virtual planning prevented iatrogenic errors.