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Published byTheodora Simmons Modified over 8 years ago
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DrTorabi Kerman Dental School
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MIXED ODONTOGENIC TUMORS Proliferating odontogenic epithelium in a cellular ectomesenchyme Varying degree of inductive effect enamel and dentin
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Ameloblastic fibroma True mixed tumor May be early developing stage of odontoma
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Clinical features Younger patients Slightly more common in males Asymptomatic Larger :swelling 70%posterior mandible
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Radiographic features Radiolucent: multilocular or unilocular 75% with an unerupted tooth
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Histopathologic features
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Treatment and prognosis Conservative surgery Recurrence rate:0-18% in some series43.5% More aggressive surgery for recurrent lesions
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Ameloblastic fibro-odontoma Ameloblastic fibroma +enamel and dentin Exhibiting progressive growth
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Clinical features In children mean 10 years Posterior of jaws Male =females asymptomatic
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Radiographic feature Well defined radiolucent, unilocular, Calcified material (radiodensity like tooth structure) Unerupted teeth
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histopathology
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Treatment and prognosis Conservative curretage Exellent
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Ameloblatic fibrosarcoma Mean 27.5 years 80%in mandible male> female Pain and swelling rapid clinical growth
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Ill-defined radiolucency
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histopathology
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Treatment and prognosis Radical surgical excision Locally aggressive 20%of these patients will succumb to their tumor
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odontoma The most common odontogenic tumor Prevalence >other odontogenic is Hamartoma Compound>& complex Compound : multiple,small tooth-like Complex :no anatomic shape
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Clinical features First 2 decade Mean age14 Asymptomatic Large odontoma up to6 cm Maxilla>mandible Compound more in anterior maxilla,compound in posterior early:Radiolucent with rim radioopaque Developed :radioopaue
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histopathology Compound :multiple structures like tooth :Enamel matrix, pulp tissue, Complex :mature tubular dentin,odontogenic epithelium,cementum May be :odontogenic cyst
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Tumors of odontogenic ectomesenchyme Odntogenic myxoma: Young adults Mean:25-30 No sex predilection Mandible> Small :no symptomatic Large :painless expansion Sometimes :rapid expansion accumulation myxoid ground substance
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Radiographic features Unilocular or multilocular Displaced or resorption of teeth Irregular or scalloped margin Step ladder Soap bubble
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histopathology Haphazardly arranged stellate, spindle shape, round Loose myxoid stroma Hyaluronic acid,chodroitin sulfate Cells:vimentin
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Treatment and prognosis Small : curettage and periodic evaluation for at least5 years Large :extensive resection Recurrence :25% Myxosarcoma :no distant metastases
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Thanks for your attention
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