PMC3220070_01
Radiograph of 21 (tooth no. 9) revealing an incomplete endodontic procedure with calcium hydroxide powder dressing and deteriorated interim restoration of the access cavity
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F1
Radiographic examination revealed radiolucency in the periradicular area of the upper left central incisor [Figure 1].
PMC3220070_02
Root canal of 21 (tooth no. 9) was instrumented beyond the apex with the intention of disrupting the epithelium/granulation tissue
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F2
The root canal was irrigated with a 5.25% sodium hypochlorite solution and the final irrigation was done with a normal saline solution [Figure 2].
Radiograph of 21 (tooth no. 9) showing root canal disinfected with calcium hydroxide dressing
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F3
The access cavity was sealed with IRM, analgesics and antibiotics were prescribed, and the patient was recalled in 1 week [Figure 3].
MTA plug with double the recommended thickness in place after the working length
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F4
A moist cotton pellet was inserted into the canal to aid in setting and was left undisturbed for 15 min according to the manufacturer's instructions [Figure 4].
PMC3220070_03
Immediate postoperative radiograph showing the MTA plug with gutta-percha obturation of the coronal radicular pulp space
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F5
The access cavity was restored with glass ionomer cement [Figure 5].
Four-month postoperative radiograph indicating the resolution of the apical infection and rarefaction of the periapical area suggestive of bone healing
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F6
A follow-up radiograph after 4 months showed that the lesion had begun to resolve [Figure 6].
Showing a preoperative and postoperative comparison of clinical appearance
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F7
The preoperative and postoperative appraisal is evident from the clinical picture [Figure 7].