Ameloblastoma

Ameloblastoma or adamantinoma is a benign tumor of ectodermal origin. It is the most common odontogenic tumor based on ameloblasts.

Description

 * Benign tumor of the odontogenic epithelium.
 * It grows in cancellous bone and destroys it.
 * It deforms the face and causes tooth loss - a locally destructive effect.
 * It grows very slowly.
 * The cortical lamina is pushed out, it is thin on paper and cracks when touched (it is called crepitation).
 * It is formed on the basis of uncut teeth or from a follicular cyst.

Occurrence

 * In both sexes equally often, between the 30s and 40s.
 * More often affected mandible in the molar landscape.

Variants

 * Follicular ameloblastoma


 * Formed by islets of tumor tissue.


 * Plexiform ameloblastoma


 * Epithelial tumor structures are in the lanes.


 * Squamous ameloblastoma


 * There are tile structures in the center of the follicle.


 * Granular ameloblastoma


 * At the center are clusters of large, oval, densely packed cells with finely granulated eosinophilic plasma..

Therapy
Extirpation – in smaller tumors.

Jaw resection – for large lesions.

Complication

 * Malignant reversal in ameloblastic carcinoma.