case_images: PMC7746471_01
case_images: Initial panoramic and periapical radiography of the periapical lesion of tooth #22.
case_images: IJD2020-6677588.001.jpg
case_images: PMC7746471_01_IJD2020-6677588.001.jpg
case_images: fig1
case_images: As well, unsatisfactory endodontic treatment of the same tooth was founded with signs of root perforation due to a previous treatment (Figure 1).
case_images: Initial CBCT images of the periapical lesion of tooth #22.
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case_images: PMC7746471_01_IJD2020-6677588.002.jpg
case_images: fig2
case_images: The cone beam computed tomography (CBCT) scan was indicated to obtain an accurate diagnosis of the lesion and its relationship with the adjacent teeth and to confirm the presence of the root canal perforation (Figure 2).
case_images: The surgical intervention. (a) Surgical window; (b) apicoectomy; (c) after retroinstrumentation; (d) methylene blue application; (e) laser irradiation; (f) retrofilling with 5MO cement.
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case_images: PMC7746471_01_IJD2020-6677588.003.jpg
case_images: fig3
case_images: Then, the root canal was retrofilled with 5MO bioceramic cement (SHAM Dentico, Oman) manipulated following the manufacturer's guidelines (Figure 3).
case_images: The surgical intervention. (a) Bone graft positioning and (b) membrane placement.
case_images: IJD2020-6677588.004.jpg
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case_images: fig4
case_images: Postoperative periapical radiography immediately after suturing, compared with the initial one.
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case_images: PMC7746471_01_IJD2020-6677588.005.jpg
case_images: fig5
case_images: Products Co, Jiangsu, China). Postoperative periapical radiography was performed immediately after suturing (Figure 5).
case_images: CBCT images of the periapical lesion of tooth #22 after 12 months.
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case_images: fig6
case_images: In the second session (12 months later), the patient progression was evaluated by CBCT images and a bone neoformation was observed at the periapical area of tooth #22 (Figure 6).