Classification[ edit ] An ameloblastic fibroma is classified by The World Health Organisation as a benign mixed odontogenic tumour 1. It develops from the dental tissues that grow into teeth. During human development, embryonic cells of ectoderm and mesenchyme produce epithelial and ectomesenchyme tissues. These proliferate and mature into ameloblasts and fibrous connective tissue 3 , and ultimately teeth.
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Surej Kumar: moc. Khalam: moc. This article has been cited by other articles in PMC. Frequent signs of this tumour are asymptomatic swelling, delayed tooth eruption and mixed radiological appearance within well-defined borders. Management of the lesion includes enucleation of the tumour and long-term follow-up. OPG showed unerupted tooth bud of upper right second molar and was being prevented from eruption by the odontome. Under general anaesthesia, the lesion was enucleated and the permanent right upper second molar tooth bud removed.
Adequate clinical and radiological investigations, proper surgical excison, accurate histopathological diagnosis, and long term follow up will ensure the right treatment plan for the patient. Histological assessment revealed a final diagnosis of ameloblastic fibro-odontoma. Keywords: Ameloblastic fibro-odontoma, Odontome, Posterior maxillary swelling mixed odontogenic tumours 1. Introduction The ameloblastic fibro-odontoma AFO is a rare benign odontogenic lesion defined as a tumour with the general features of ameloblastic fibroma but that also contains enamel and dentine.
According to the recent World Health Organization classification of Odontogenic Tumours published in , 1 AFO belongs to the group of lesions with odontogenic epithelium with odontogenic ectomesenchyme, with or without hard tissue formation. Ameloblastic fibro-odontoma is defined by the World Health Organization as a neoplasm consisting of odontogenic ectomesenchyme resembling the dental papilla, epithelial strands and nest resembling dental lamina and enamel organ conjunction with the presence of dentine and enamel.
AFO is normally found in young patients, with no significant gender predilection. The two main complaints associated with AFO are swelling and failure of tooth eruption. Clinically, it presents as a painless swelling of the affected area, usually the posterior portion of the maxilla or mandible.
Radiographs show a well-defined radiolucent area containing various amounts of radiopaque material of irregular size and form. Case report A year-old girl was referred to oral and maxillofacial surgery department with an incidental radiological finding of radiopaque mass in the posterior region of maxilla.
On inspection a mild swelling was present in the right posterior buccal region. On palpation lesion was firm in consistency, and gave the feeling of irregular surface. Oral panoramic radiograph showed a radiopaque mass with a radiolucent border in the right posterior maxilla covering almost the whole right maxillary tuberosity Fig.
Considering the clinical and radiological picture the possible differential diagnosis was calcifying epithelial odontogenic tumour CEOT , adenomatoid odontogenic tumour AOT and ameloblastic fibro-odontoma.