Endodontic Retreatment of a Tooth with Defective Coronal Restoration and Missing Canal

Case Overview A patient was referred for endodontic retreatment and coronal restoration of a tooth presenting with a defective coronal restoration, secondary decay, and an inadequate previous root canal treatment in which at least one canal had been left untreated. Clinical and radiographic evaluation confirmed the need for complete retreatment of the root canal system followed by a definitive coronal build-up, with a full-coverage crown planned as the final restoration. Pre-operative Assessment Pre-operative view showing the defective coronal restoration Pre-operative situation — note the incongruous existing root canal treatment and missing canal Treatment Procedure Isolation and Access The tooth was isolated with a rubber dam to ensure an aseptic operative field before any endodontic instrumentation was begun. Rubber dam isolation…