Abstract：
Odontogenic fibroma (OF) is considered an unusual, benign mesenchymal neoplasm and one of the most little-understood lesions amongst all odontogenic neoplasms. The incidence rate of the tumor is from 0% to 5.5%. WHO classified them into intraosseous or central and extraosseous or peripheral variants. It chiefly consists of fibroblastic tissue with an inconsistent amount of inactive appearing odontogenic epithelium. The lesion has a slow growth along with cortical expansion with equal predilection in the anterior maxilla and posterior mandible. Radiologically, multilocular radiolucency is the most frequent finding with few cases being associated with root resorption or displacement. Microscopically, mature collagen fibers and numerous fibroblasts along with odontogenic epithelial islands are characteristically found. Central Odontogenic Fibroma responds well to surgical enucleation with no tendency for malignancy or recurrence. Here we report a rare case report of an 18 yr old male patient with Odontogenic fibroma of the posterior maxilla.
摘要：
牙源性纤维瘤（OF）被认为是不寻常的，良性间充质肿瘤和所有牙源性肿瘤中最鲜为人知的病变之一。肿瘤的发病率从0%到5.5%。WHO将它们分为骨内或中枢和骨外或外周变异。它主要由成纤维细胞组织组成，其无活性的牙源性上皮数量不一致。病变的生长缓慢，皮质扩张，上颌骨前段和下颌骨后段相同。放射学上,多房射线不透性是最常见的发现，少数病例与牙根吸收或移位有关。微观上,典型地发现了成熟的胶原纤维和许多成纤维细胞以及牙源性上皮岛。中央牙源性纤维瘤对手术摘除术反应良好，没有恶性或复发的趋势。在这里，我们报告了一名18岁的男性上颌骨后部牙源性纤维瘤患者的罕见病例报告。
