PMC5066008_01
Initial periapical radiograph showing the fragment at the apical canal third.
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It was decided to retreat the tooth, and to do so a periapical radiograph was performed in which the presence of a fragment was seen compatible with a hand-file of a size around 6 mm, localized at the apical third of the palatine root of the mentioned tooth (Figure 1).
Periapical radiograph of the moment when trying to bypass the fractured instrument using manual files.
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The instruments advanced 2 mm laterally to the fragment, but due to the difficulties related to the size of the fractured instrument and to the risk of causing a deviation in the original trajectory of the root canal, it was decided to stop this procedure (Figure 2).
Periapical radiograph confirming the attachment of the fragment to the hypodermic needle.
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After the confirmation (Figure 3), the cyanoacrylate adhesive was inserted in the aperture of the needle that was turned to the crown of the tooth using K-files and slight air jets.
Photograph of the set hypodermic needle-fragment removed from the root canal.
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Periapical radiograph confirming the complete removal of the fragment.
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Periapical radiograph of the endodontic treatment completed.
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