Mahmut Gazi Frat, Dogukan Bulut
Abstract: Objectives: During endodontic treatment, instruments can be broken in the canal for various reasons. While it is generally seen that the instruments should not be left broken beyond the apex, this case report shows that a tooth with an open apex may form calcified tissue around the broken file outside the apex. Case report: The 9-year-old male patient who had an endodontic file fracture in the mesiobuccal canal of the right lower first molar tooth was found to be 1.5 mm outside the root. It was decided to fill the canals by leaving the file in this state. At the end of the 6-month follow-up, hard tissue formation was observed around the file, but no pathology was observed. Conclusion: Although it is shown in this case report that the instruments are broken in the canal when the sterile working environment overflows from the root end, the apex does not prevent closure, but many studies are needed on this subject.
Keywords: Apexogenesis, Broken Instrument, Endodontic Treatment, Immature Root