Ameloblastoma (circumscribed)


  • Benign, locally aggressive odontogenic tumor. Usually it slowly grows as painless swelling of the affected site.
  • It can occur at any age.
  • Localized invasion into the surrounding bone.
  • 80-95% in the mandible (posterior body, ramus region). In the maxilla mostly in the premolar-molar region.
  • Unilocular (small lesions). Multilocular (large discrete areas or honeycomb appearance)
  • Smooth, well-defined, well-corticated margins
  • Adjacent teeth are often displaced and resorbed.
  • It causes extensive bone expansion.
  • Incomplete removal can result in recurrence.

Differential diagnosis