Abstract:-  Introduction:- The line-up of an endodontic therapy is the complete debridement of the pulp tissue and the destruction of microorganisms found in infected root canals and provide an effective seal to prevent recolonization of the canal with bacteria. Thus, the primary endodontic treatment goal must be to ensure root canal disinfection and to prevent reinfection. Incomplete root canal treatment can trouble the patient leading to pain and irritation. This case explains how the patient tries to get rid of pain by placing a foreign body in complicated crown fracture with irritation.  Aim:- To describe the consequences of incomplete endodontically treated tooth that can lead to endodontic mishap.

Keywords : Self-inflicted Injury, Endodontic Mishaps, Incompletely Treated Endodontic Tooth, Trauma, Broomstick Retrieval.