case_images: PMC5066008_01
case_images: Initial periapical radiograph showing the fragment at the apical canal third.
case_images: CRID2016-3970743.001.jpg
case_images: PMC5066008_01_CRID2016-3970743.001.jpg
case_images: fig1
case_images: 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).
case_images: Periapical radiograph of the moment when trying to bypass the fractured instrument using manual files.
case_images: CRID2016-3970743.002.jpg
case_images: PMC5066008_01_CRID2016-3970743.002.jpg
case_images: fig2
case_images: 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).
case_images: Periapical radiograph confirming the attachment of the fragment to the hypodermic needle.
case_images: CRID2016-3970743.003.jpg
case_images: PMC5066008_01_CRID2016-3970743.003.jpg
case_images: fig3
case_images: 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.
case_images: Photograph of the set hypodermic needle-fragment removed from the root canal.
case_images: CRID2016-3970743.004.jpg
case_images: PMC5066008_01_CRID2016-3970743.004.jpg
case_images: fig4
case_images: Periapical radiograph confirming the complete removal of the fragment.
case_images: CRID2016-3970743.005.jpg
case_images: PMC5066008_01_CRID2016-3970743.005.jpg
case_images: fig5
case_images: Periapical radiograph of the endodontic treatment completed.
case_images: CRID2016-3970743.006.jpg
case_images: PMC5066008_01_CRID2016-3970743.006.jpg
case_images: fig6