PMC8519715_01
(a) Mucosal sinus tract on the maxillary right central incisor. (b) Four-month follow-up. (c) Fourteen-month follow-up.
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Sciences (TUMS) School of Dentistry with a chief complaint of a sinus tract in the maxillary right central incisor (Figure 1(a)). She presented normal systemic health and corresponded to class I according to ASA health classification. At 2-month (Figure 2(c)) and 4-month (Figures 1(b) and 2(d)) recall visits, tooth #8 showed no significant discoloration or mobility. At 14-month recall (Figures 1(c) and 2(e)) (10 months after initial regenerative endodontic treatment of tooth #9), teeth #8 and #9 were asymptomatic.
(a) Periapical radiograph of the maxillary right central incisor with traced mucosal sinus tract using a no. 30/0.02 gutta-percha point. (b) Immediate postoperative radiograph showing completion of RET. (c) Two-month follow-up. (d) Four-month follow-up. (e) Fourteen-month follow-up.
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The mucosal sinus tract was traced with a #30/.02 gutta-percha point, and a periapical radiograph was taken to ensure the origin of infection (Figure 2(a)). The final setting of the OrthoMTA as the coronal barrier material was confirmed four days later, and the tooth was permanently restored using Filtek Z350 (3M ESPE) nanocomposite material after applying a thin layer of restorative light-cured glass-ionomer cement (GC Fuji II LC, GC, Tokyo, Japan) (Figure 2(b)). At 2-month (Figure 2(c)) and 4-month (Figures 1(b) and 2(d)) recall visits, tooth #8 showed no significant discoloration or mobility.
Coronally sectioned CBCT image indicating evidence for external root resorption.
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According to CBCT (Figure 3) and evidence of external root resorption, a new treatment plan was scheduled for tooth #9.