Remove Fractured Endodontic Istruments from Root Canal Systems Using of Operating Microscope

Abstract

Purpose: To evaluate the success of using an operating microscope to remove fractured endodontic istruments from root canal systems Patients and Methods: Removal of the fractured instrument from the curved canals was performed on 61 teeth (2016 to 2022) using ultrasound under the imaging of an operating microscope (Carl Zeiss, Germany). The success of the tool removal methods used were evaluated, the success was determined by the complete removal of the fractured endodontic istruments. Results: Postoperative clinical and radiological monitoring was regularly conducted, and criteria for the success were evaluated. In the present study, using an operating microscope successful at removing fractured rotary nickel titranium segments from narrow and curved root canals in clinical cases. Conclusion: Removing instruments outside of the curvatures when direct vision is not possible can be very difficult.The clinical procedure of endodontic retreatment under the operating microscope allows to deal with highly complex casesand improve the scope of treatment and its prognosis. Key words: Endodontic Treatment; Operating Microscope; Removal of Fractured Instruments