مروری بر تاریخچه و گزارش دو مورد

Normal 0 false false false EN-US X-NONE AR-SA Juvenile ossifying fibroma of the jaws is a relatively rare but important among fibro-osseos lesions that has controversial etiology, unclear origin and various histopathological views. Radiographic findings depending on extention rate, history and stage differs from a radiolucent cyst to ground glass view to a clearly defined borders lesion. In Histological view,  as well as general characteristics of  ossyifying fibroma, cellular stroma includes many osteoblasts and multinuclear ginat osteoclasts and psammoma-like bodies . due to its aggressive manner, ossifying fibroma is called locally invasive or low grade malignancy which is prone to recurrence. Differentiating JOF with fibros dysplasia is quite important. Two cases of aggressive and extensive mandibular JOF in 4 and 7 year old boys were mentioned in this article. Laboratory, radiographic and histopathologic confusions were cleared by diagnosis of JOF. Treatment includes hemmimandibulectomy without any post surgical complications. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal" mso-tstyle-rowband-size:0 mso-tstyle-colband-size:0 mso-style-noshow:yes mso-style-priority:99 mso-style-qformat:yes mso-style-parent:"" mso-padding-alt:0cm 5.4pt 0cm 5.4pt mso-para-margin-top:0cm mso-para-margin-right:0cm mso-para-margin-bottom:10.0pt mso-para-margin-left:0cm line-height:115% mso-pagination:widow-orphan font-size:11.0pt font-family:"Calibri","sans-serif" mso-ascii-font-family:Calibri mso-ascii-theme-font:minor-latin mso-hansi-font-family:Calibri mso-hansi-theme-font:minor-latin mso-bidi-font-family:Arial mso-bidi-theme-font:minor-bidi}