case_images: PMC9337978_01
case_images: Preoperative radiographic assessment showing tooth #23 with permanent core retained with a fiber post and inadequate root canal filling.
case_images: CRID2022-3752466.001.jpg
case_images: PMC9337978_01_CRID2022-3752466.001.jpg
case_images: fig1
case_images: Radiographic interpretation revealed a permanent core retained with a fiber post of unknown sources with an inadequate root canal filling and periapical radiolucency (Figure 1).
case_images: Preoperative CBCT assessment. Sagittal slice of tooth #23 confirms apical root resorption with the radiolucent area, 2.15 mm short obturation, and fiber post cemented up to the middle third.
case_images: CRID2022-3752466.002.jpg
case_images: PMC9337978_01_CRID2022-3752466.002.jpg
case_images: fig2
case_images: The obturation was found to be 2.15 mm short from the apex and the fiber post was located up to the middle third (Figure 2).
case_images: Virtual planning of fiber post removal. The drill was positioned along the long axis of the fiber post set up to its apical tip.
case_images: CRID2022-3752466.003.jpg
case_images: PMC9337978_01_CRID2022-3752466.003.jpg
case_images: fig3
case_images: The space was virtually overlapped over the fiber post to drill through it with minimal dentin loss (Figure 3).
case_images: (a) Under rubber dam isolation, the guide was positioned on the teeth to check the correct fitting. (b, c) Intracanal space following complete removal of the fiber post with coronal gutta-percha exposure.
case_images: CRID2022-3752466.004.jpg
case_images: PMC9337978_01_CRID2022-3752466.004.jpg
case_images: fig4
case_images: The endo-guide template was fitted inside the patient's mouth (Figure 4(a)). The procedure took 14 min and 55 s to expose the coronal gutta-percha inside the canal (Figure 4(b) and 4(c)).
case_images: (a) Working length determination radiograph. (b) Master gutta-percha cone radiograph. (c) Final radiograph.
case_images: CRID2022-3752466.005.jpg
case_images: PMC9337978_01_CRID2022-3752466.005.jpg
case_images: fig5
case_images: Tokyo, Japan) and confirm it radiographically (Figure 5(a)). Paul, MN, USA) and resin-modified glass ionomer material (Photac Fil; ESPE, Norristown, PA, USA) filling materials and referred for final restoration (Figure 5(b) and 5(c)).