case_images: PMC11747136_01
case_images: First molar on the left side of the mandible: (A) initial radiograph, extensive distal caries, PDL widening, S-shaped canals; (B) working length determination; (C) final radiograph, obturation, apical seal, temporary restoration; (D) 18-month follow-up, coronal seal.
case_images: CCR3-13-e70104-g002.jpg
case_images: PMC11747136_01_CCR3-13-e70104-g002.jpg
case_images: ccr370104-fig-0001
case_images: Radiographic evaluation showed RE along with S-shaped canals (Figure 1A). Ltd., Changzhou, China) was used to inspect the working length and it was confirmed by radiography (Figure 1B). Finally, Cavit (Cavisol, Tehran, Iran) was applied as a temporary restoration (Figure 1C). Clinical examination and radiographs showed an asymptomatic tooth with successful endodontic treatment (Figure 1D).
case_images: PMC11747136_02
case_images: Mandibular right first molar: (A) initial radiograph, extensive mesial caries, widening of PDL, double curvature (bull's eye view); (B) working length determination; (C) cone fit confirmation; (D) final radiograph, obturation, apical seal, temporary restoration; (E) 8-month follow-up, coronal seal.
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case_images: PMC11747136_02_CCR3-13-e70104-g004.jpg
case_images: ccr370104-fig-0002
case_images: Initial radiography revealed (Figure 2A) RE and double curvature with the bull's eye view. The working length was determined by the apex locator and confirmed by radiography (Figure 2B). Additionally, before obturation, a Master Apical Cone (MAC) radiograph was obtained to confirm the length of the selected cones (Figure 2C). The final radiograph (Figure 2D) illustrates the temporary restoration, apical, and coronal seal following obturation. Clinical examination and radiography also showed an asymptomatic tooth with successful endodontic treatment (Figure 2E).
case_images: PMC11747136_03
case_images: Mandibular right first molar: (A) radiograph of the broken file in the mesiobuccal canal; (B) photograph of the file retrieval from the mesiobuccal canal; (C) orifice shaper file broken in radix, C file #10; (D) bypassing the broken file.
case_images: CCR3-13-e70104-g003.jpg
case_images: PMC11747136_03_CCR3-13-e70104-g003.jpg
case_images: ccr370104-fig-0003
case_images: A 41-year-old woman, systematically healthy, was referred to the endodontics department of the faculty due to the separation of a file in the mesiobuccal canal of the right mandibular first molar (Figure 3A). New District, China) (Figure 3B). Nevertheless, the framed material of the orifice shaper separated at the radix (Figure 3C) and the broken file was bypassed using C-files #8,10,15 (VDW, Munich, Germany). (Figure 3D).
case_images: Mandibular right first molar: (A) working length determination; (B) master cone; (C) final radiograph, obturation, apical seal, temporary restoration; (D) 9-month follow-up, apical seal; (E) 9-month follow-up, coronal seal.
case_images: CCR3-13-e70104-g001.jpg
case_images: PMC11747136_03_CCR3-13-e70104-g001.jpg
case_images: ccr370104-fig-0004
case_images: The working length was determined by the apex locator and confirmed by radiography (Figure 4A). Before obturation, a cone-fitting radiograph was obtained to confirm the length of the selected cones (Figure 4B). The final radiograph (Figure 4C) illustrates the temporary restoration, apical and coronal seal following obturation. Observing and examining the radiograph also showed the success of the treatment process in establishing an apical (Figure 4D) and coronal seal (Figure 4E).