case_images: PMC8514905_01
case_images: Intra-oral photograph of the fractured maxillary left central incisor in a 9-year-old boy (a) preoperative image, (b) 3-month recall, and (c) 18-month recall.
case_images: CRID2021-2478310.001.jpg
case_images: PMC8514905_01_CRID2021-2478310.001.jpg
case_images: fig1
case_images: Upon intraoral examination, complicated crown fracture of tooth #9 was noted (Figure 1(a)). The follow-up radiographs and photographs are shown in Figures 1 and 2.
case_images: The radiographic images showing (a) the initial preoperative condition, (b) tracing the mucosal sinus tract with a gutta percha point, (c) second try, (d) 3-month recall, (e) 9-month recall, and (f) 18-month recall.
case_images: CRID2021-2478310.002.jpg
case_images: PMC8514905_01_CRID2021-2478310.002.jpg
case_images: fig2
case_images: A well-defined periapical radiolucent lesion was evident around the root apex (see Figure 2(a)). Upon radiographic evaluation, the sinus tract was traced with a #30/0.02 gutta percha point and its extension to the apex of tooth #9 was confirmed (see Figure 2(b)). The PRF, Dentin-bonding agent (Single Bond, 3M, ESPE, USA), and coronal barrier (Retro-MTA (bioMTA, Seoul, South Korea)) was placed as pervious try, access cavity sealed with reinforced zinc-oxide eugenol (Zoliran, Golchadent, Iran). (Figure 2(c)) After 1 week, the MTA was set and the crown was restored by composite resin (FGM, Joinville, Brazil). The follow-up radiographs and photographs are shown in Figures 1 and 2.