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骨性纤维性龈瘤是一种位于龈缘的、由致密的纤维性肉芽组织构成的软组织肿物。其病程长时可发生钙化,即成为骨性。它是因牙组织的损伤或刺激使纤维结缔组织过度增生所致,龈下结石或龈沟内异物是最常见的刺激源。龈瘤骨结构的出现是由于病损中央的结缔组织发生变性,或慢性刺激侵及骨膜,牙周膜的结果。此时瘤体坚固,表面复盖着正常的龈粘膜。
Bony fibrous gingival tumors are located in the gingival margin, composed of dense fibrous granulation tissue soft tissue mass. The long course of calcification, that becomes a bony. It is due to tooth tissue damage or stimulation of fibrous connective tissue hyperplasia, subgingival calculus or gingival sulcular foreign body is the most common source of stimulation. The appearance of gingival bone structure is due to the degeneration of connective tissue in the central lesion, or the result of chronic stimulation of periosteum and periodontal ligament. At this time the tumor is firm, the surface covered with normal gingival mucosa.