ameloblast

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ameloblast

[′am·ə·lō‚blast]
(embryology)
One of the columnar cells of the enamel organ that form dental enamel in developing teeth.
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References in periodicals archive ?
They include 20 cases of Ameloblastoma, 5 calcifying epithelial odontogenic tumour, 10 adenomatoid odontogenic tumours, 10 ameloblastic fibromas and 10 cases of odontogenic myxomas.
Ameloblastic fibro-odontoma in the mandibular incisor of a cow.
Provi- sional diagnosis of Ameloblastoma with differential diagnosis of central giant cell granuloma, odontogenic Fig 8: Shows diffusely scattered multinucleated giant keratocyst and ameloblastic fibroma was made and cells of varying size patient was advised for incisional biopsy.
Lesions included adnexal neoplasm, ameloblastic fibro-odontoma, basal cell carcinoma, benign fibrous histiocytoma, blue nevus, chondrosarcoma, compound nevus, epithelioma adenoides cysticum, esthesioneuroblastoma, Ewing sarcoma, fibrosarcoma, giant cell granuloma, granulocytic sarcoma, hemangioma, hemangiopericytoma, Langerhans cell histiocytosis, lymphangioma, lymphoma, melanoma, neuroblastoma, neurofibroma, ossifying osteofibroma, osteochondroma, osteosarcoma, port wine stain, rhabdomyosarcoma, Spitz nevus, and xanthogranuloma.
Intraosseous odontogenic or ameloblastic fibroma was also excluded.
Ameloblastic fibromas are a rare variety of benign odontogenic tumors composed of proliferating odontogenic epithelium embedded in a cellular ectomesenchymal tissue resembling dental papilla.
On histopathologic examination, the neoplasm showed presence of dental papilla characterized by homogenous non cellular material (dentin and enamel) lined by columnar epithelium cells (ameloblasts) embedded in myxomatous fibrous stroma thus confirming ameloblastic fibroodontoma.
Ameloblastic Carcinoma of Mandible: A Rare Case Report.
The adamantinomatous type resembles the dental ameloblastic organ and is similar to that seen in adamantinoma; it more frequently exhibits calcification, foreign body reaction with inflammation, and giant cells around cholesterol clefts.
Microscopically, the ameloblastoma is composed of nests, strands, and cords of ameloblastic epithelium, all separated by relatively small amounts of fibrous connective-tissue stroma.
Based on gross and histopathological features, the tumor was confirmed as ameloblastic fibro odontoma and managed surgically.
1) The reduced enamel epithelium which is associated with a developing tooth undergoes ameloblastic transformation with subsequent cystic development.