Broken File Retrieval in the Lower Right First Molar Using an Ultrasonic Instrument and Endodontic Micro Forceps

Figure 1

(a) Preoperative clinical feature. (b) Preoperative radiograph with a broken file in the mesiolingual canal. (c) Broken file was seen inside the canal (dental microscope magnification). (d) Ensuring the position of the file with an instrument.

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(b)

(c)

(d)