Ameloblastic fibro-odontoma (AFO) is a benign, slow growing, expansile epithelial odontogenic tumor with odontogenic mesenchyme. Looking for online definition of ameloblastic odontoma in the Medical Dictionary? ameloblastic odontoma explanation free. What is ameloblastic odontoma?. Riddett S.A.A Composite Odontome at a Very Early Age. Brit. Dent. J., 77 (), p. Google Scholar. 2. Kemper J.W., Root to-odontoma. Amer.

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An year-old girl presented to our department on referral from another dentist to have a second opinion about a lesion involving the left mandible. Ameloblasfic evidence of malignancy is found. The patient was kept under regular follow-up for 6 months and, to add to our delight, there were nosigns of graft failure or loco regional recurrence.

Gardner syndrome, a variant of familial adenomatous polyposis FAP aameloblastic, is an autosomal dominant disease characterized by GI polyps, multiple osteomas, skin and soft tissue tumors such as epidermal inclusion cysts and desmoid tumors. More disorganized or haphazard arrangement of pulpal xmeloblastic, enamel or dentin.

Light microscopic examination of sections stained with hematoxylin and eosin revealed strands and islands of odontogenic epithelium showing peripheral palisading and loosely arranged central cells, identical to stellate reticulum, embedded in a myxoid cell-rich stroma resembling the dental papilla Figure 4.

The medical, social and family histories were unremarkable, as were the results of a review of systems and a physical examination. Surgical site showing denticles.

International Journal of Dentistry

Cahn amelpblastic Blum [ 13 ] postulated that ameloblastic fibroma the ocontoma least differentiated tumor develops first into a moderately differentiated form, following AFO and eventually into a complex odontoma. View at Google Scholar L. An impacted third molar was present below the mass just above the inferior border amelpblastic Figure 3 ].

Subdivided into compound odontoma and complex odontoma The most common odontogenic tumor Can obstruct the path of erupting teeth Most recent WHO Classification of Head and Neck Tumours regards majority of ameloblastic fibro-odontomas as developing odontomas rather than a distinct tumor IARC: Radiographically, it appears as a well-circumscribed, expansile radiolucency that generally contains solitary or multiple small radiopaque foci.


Histopathologically, an AFO and a complex odontoma are indistinguishable. Treatment includes conservative surgery or enucleation.

The tumor mass is surrounded by a fibrous capsule and is composed predominantly of a fibroblastic connective tissue matrix containing strands of odontogenic epithelium and immature tooth structures, including enamel and dentin. Sign in to make a comment Sign in to your personal account. Excisional biopsy was performed, and microscopic features showed strands and islands of odontogenic epithelium showing peripheral palisading and loosely arranged central cells, identical to stellate reticulum, embedded in a myxoid cell-rich stroma resembling the dental papilla.

The relative arrangement of the soft tissues and the stage of development of the involved tooth odontomaa useful criteria for diagnosis. Can occur in any tooth bearing area Compound odontoma usually occurs in anterior maxilla Complex odontoma usually occurs in posterior mandible. The table compares Gorlin’s survey composed of his own case plus those cases reported in the earlier literature which he thought belonged in this diagnostic category with Hooker’s survey 26 cases.

Sign in to save your search Sign in to your personal account. Orthopantomogram revealsa large, well-defined radiopaque lesion with focal radiolucent areas occupying the whole left body of the mandible. The mandibular left second molar was not present Figure 1. Peutz-Jeghers syndrome is characterized by the development of noncancerous growths called hamartomatous polyps in the GI and an increased risk of developing certain types of cancer.

An ameloblastic fibroodontoma AFO is a rare odontogenic tumor of mixed dental tissue origin.

Declaration of patient consent The authors certify that they have obtained all appropriate patient consent forms. Natl J Maxillofac Surg.

C onclusion An AFO is maeloblastic immature variant of complex odontoma, as the clinical and radiographic findings are identical. On intraoral examination, a small hard tissue projecting over the posterior alveolus was present with normal surrounding mucosa.


Images hosted on other servers: Supernumerary teeth Complete well formed teeth Usually in males Can rarely be associated with syndromes such as cleidocranial dysostosis General: Intraoral photograph showing missing permanent left mandibular molars and a calcified, toothlike structure protruding odontomx the alveolar mucosa over the retromolar region.

The arrangement of the soft tissues and the development stage of the involved tooth are useful criteria for diagnosis [ 3 ].

ameloblastic odontoma

Gardner syndrome familial colorectal polyposis: Radio opaque lesion surrounded by radiolucent zone. Many asymptomatic; discovered upon exploring potential causes of Asymmetric tooth eruption Malposition of erupted teeth Occasional devitalization of adjacent teeth Can become symptomatic due to local infection sinusitis, infected adjacent tooth, exposure of odontoma to oral environment, etc and can present with swelling and pain Size: Sign in to customize your interests Sign in to your personal account.

The amelobastic of this lesion is controversial. Well defined multiple radiopacities.

AFOs are usually found to be asymptomatic and are most often discovered on routine radiography. One week post operation, healing over both the donor and recipient sites was found to be satisfactory, and the sutures were thus removed.

Ameloblastic Odontoma: Report of Two Cases | JAMA Pediatrics | JAMA Network

The defect was measured to be approximately 6 cm in length. Considering the clinical and radiographic examinations, our presumptive diagnosis was complex odontoma. Ameloblastic fibroodontoma, complex odontoma, mandible, odontogenic tumor.

Despite numerous efforts, however, there is still considerable confusion concerning the nature of these lesions [ 17 ].