Retreatment of Lower Second Molar with Separated Instrument

Endodontics
Pre-operative radiograph showing separated instrument

Pre-operative radiograph showing separated instrument

Instrument bypass radiograph

Instrument bypass radiograph

Final obturation radiograph

Final obturation radiograph

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Initial Assessment: Radiographic evaluation revealed a previously treated lower second molar with a separated instrument within the canal.

Clinical Decision: A bypass technique was selected to regain canal patency and allow adequate disinfection.

Clinical Steps

  1. Removal of previous obturation material

  2. Bypassing the separated instrument

  3. Re-establishing working length

  4. Cleaning, shaping, and irrigation

  5. Re-obturation of the canal

Outcome: Successful bypass and obturation were achieved, confirmed radiographically.