case_images: PMC11749096_01
case_images: Preoperative periapical radiograph showing periapical lesions with mesial hypercementosis and external root resorption of the distal root.
case_images: cureus-0017-00000077775-i01.jpg
case_images: PMC11749096_01_cureus-0017-00000077775-i01.jpg
case_images: FIG1
case_images: Clinical and radiographic evaluation revealed substantial damage to the lower right first molar (Figure 1).
case_images: Post-endodontic retreatment periapical radiograph.
case_images: cureus-0017-00000077775-i02.jpg
case_images: PMC11749096_01_cureus-0017-00000077775-i02.jpg
case_images: FIG2
case_images: The patient was referred to endodontics for root canal re-treatment and then returned for the final crown (Figure 2).
case_images: Periapical radiograph after placement of the fiber post and core build-up.
case_images: cureus-0017-00000077775-i03.jpg
case_images: PMC11749096_01_cureus-0017-00000077775-i03.jpg
case_images: FIG3
case_images: Next, an adhesive (3M  Scotchbond  Universal Adhesive) was applied, air-blown for five seconds, and light-cured for 20 seconds, followed by core build-up (IVOCLAR VIVADENT MultiCore Flow Core Build-Up) (Figure 3).
case_images: Bitewing radiograph after post crown cementation.
case_images: cureus-0017-00000077775-i04.jpg
case_images: PMC11749096_01_cureus-0017-00000077775-i04.jpg
case_images: FIG4
case_images: A bite-wing radiograph was taken to ensure the complete removal of any cement remnants (Figure 4).
case_images: Periapical radiograph after one-year follow-up.
case_images: cureus-0017-00000077775-i05.jpg
case_images: PMC11749096_01_cureus-0017-00000077775-i05.jpg
case_images: FIG5
case_images: About a year later, the patient was referred for a follow-up visit (Figure 5).