PMC9822737_01
Pre-operative radiographs showing multiple external inflammatory root resorption lesions. (a) Teeth number 11 and 21. (b) Teeth number 21 and 22.
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The resorption lesions thinned the dentinal walls, which had crater-shaped indentations and showed radiolucent regions in the adjacent bone (Figure 1).
Representative three-dimensional images of external inflammatory root resorption (EIRR) lesions. (a) Tooth number 11 showed three lesions: two in the cervical third (yellow line and box) and one in the middle third (blue line and box). (b) Tooth number 21 showed two lesions: one in the cervical third (yellow line and box) and one in the apical third (red line and box). (c) Tooth number 22 showed six lesions: four in the cervical third (yellow line and box) and two in the apical third (red line and box). *Indicates EIRR lesions with root perforation (EIRR #2, #5, and #6).
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A total of 11 EIRR lesions were found and identified by consecutive numbers (Table 1 and Figure 2): three in tooth number 11, two in tooth number 21, and six in tooth number 22.
Post-treatment radiographs. (a) Root canal filling in teeth number 11 and 21. (b) Root canal filling in teeth number 21 and 22.
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The final radiograph demonstrated adequate filling of the pulp space (Figure 3).
Clinical and radiographic appearance at the 60-month follow-up. (a) Intraoral frontal view of the patient. (b) and (c) Follow-up radiographs.
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The dental crowns showed no discoloration (Figure 4(a)). The periapical radiographic analysis confirmed the total disappearance of the apical and lateral radiolucent lesions, with evidence of hard tissue deposition and reestablishment of cortical bone in the three affected incisors (Figures 4(b) and 4(c)).
Three-dimensional appearance of the 11 external inflammatory root resorption (EIRR) lesions at the 60-month follow-up revealing adequate healing. (a) Tooth number 11 showed three lesions: two in the cervical third (yellow line and box) and one in the middle third (blue line and box). (b) Tooth number 21 showed two lesions: one in the cervical third (yellow line and box) and one in the apical third (red line and box). (c) Tooth number 22 showed six lesions: four in the cervical third (yellow line and box) and two in the apical third (red line and box). *Indicates EIRR lesions with root perforation (EIRR #2, #5, and #6).
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In addition, the three perforating EIRR lesions were also repaired and showed hard tissue deposition (Figure 5).