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. 2019 Dec 3;13(3):450–458. doi: 10.1055/s-0039-1700767

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Fig. 5 — Periapical radiographs showing the endodontic instruments fractured during root canal treatment: (A) a broken endodontic file (arrow) extruded through the apical foramen which may cause irritation or foreign body reaction in the periapical area (B) a broken endodontic file (arrow) obstructing access to the apex and making cleaning and shaping of apical part of root canal challenging (C) a endodontic file (arrow) in the apical third of the root canal, hence compromising the further cleaning and shaping of apical seal of the affected root canal.