Extensive Mandibular Ameloblastic Fibro-Odontoma

Abstract

Ameloblastic fibro-odontoma (AFO) is a mixed odontogenic tumor that presents epithelial and mesenchymal components. Ameloblastic fibro-odontoma is generally diagnosed between the first and second decades of life and normally shows a slow clinical growth in the posterior portion of the maxilla or mandible, being mostly associated with 1 or more impacted teeth. Radiographic features of AFO show a radiolucent well-defined, uni, or multilocular defect due to containing variable amounts of calcified material. The enucleation of the tumor is the usual conduct and should be followed up for a long period of time. Here, the authors report the case of 17-year-old male patient who presented an extensive AFO on the right posterior side of the mandible. The panoramic radiograph and the tomographic examination revealed a multilocular radiolucent lesion with impacted teeth. Histological examination revealed connective tissue resembling the dental papilla along with epithelial strands or islands, as well as dental hard tissue such enamel and dentin. Enucleation and curettage was performed and led to good outcome. There was no recurrence after an 8-year follow-up, and oral rehabilitation was performed with dental implants.

Ameloblastic fibro-odontoma in an unusual area of the maxilla: Two Case Reports.

“…12 In a study of 108 lesions of this type, Kirjavainen et al, 14 reported that they occurred between the ages of 6.3 and 9.6 years with an incidence rate of 1:1.65 in female to male patients, up to age 20, with a predilection for the posterior mandibular area in the molar region, associated with an unerupted tooth in 94% of cases, a recurrence rate of 6% and a good prognosis. 13,15 On the other hand, Sardana et al, 16 state that the incidence is practically the same for both jaws, with greater frequency in the posterior region.…”

Odontoma composto em região anterior de mandíbula

“…O Odontoma composto é considerado mais comum do que o Odontoma complexo. Sua etiologia é pouco explorada, mas há forte relação com mutação genética e o local de maior acometimento é região anterior de maxila (Marimuthu et al, 2022;Preoteasa & Preoteasa, 2018;Ribeiro et al, 2016). Na radiografia panorâmica, apresenta áreas radiopacas similares a um dente.…”