Healing of a fibrous dysplastic lesion in a permanent molar after endodontic therapy.

Fibrous dysplasia presents in two forms: monostotic and polyostotic. Both forms are more widespread among children and juveniles and may result in facial asymmetry. Neoplastic bone lesions, localized over the root apices and mimicking periapical pathosis, have been observed. Irregular pulp morphology not previously reported is described in the following case report. A 14-year-old boy diagnosed with fibrous dysplasia was referred for endodontic treatment as the result of a necrotic pulp in an upper molar. A periapical lesion was diagnosed when the tooth was intact. After complex root canal treatment the periapical lesion healed.