The risk of selective retreatment

The patient presented with pain on tooth 46 to cold and chewing, without swelling. The pre-operative radiograph revealed a distal carious lesion associated with an incongruous restoration. Pre operative Radiography Primary root canal treatment was performed, and three canals were located (two mesial and one distal). Instrumentation was carried out using Reciproc instruments (VDW). Disinfection was performed with 2.5% sodium hypochlorite without activation, and obturation was completed using AH Plus bioceramic sealer (Dentsply) with a single-cone technique. Prosthetic rehabilitation was completed in the following days. Post operative Radiography After 3 months, the patient returned with severe pain on mastication. Radiographic examination showed a periapical lesion on the distal root, and CBCT confirmed the presence of a second distal canal. Retreatment…