A 56-year-old woman presented with a very large asymptomatic lesion associated with tooth #20. The chief complaint was slight numbness radiating to the left side of the chin. Differential diagnosis: 1) Root fracture 2) Failing root canal.
Periodontal probing around tooth #20 was within normal limits. Since the probing was WNL, an apicoectomy was the choice of treatment.
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