PP - PERIPHERAL OSSIFYING FIBROMA IN GINGIVA: A CASE REPORT OF AN UNUSUALLY LARGE LESION

Peripheral ossifying fibroma is a gingival overgrowth that is considered a reactive lesion of unknown pathogenesis. It usually originates from the interdental papillae, presenting as a sessile or pedunculated nodular mass, pink to red in color, and frequently ulcerated surface. Occasionally, it can reach large size. Aim: To report a case of an unusually large peripheral ossifying fibroma. Case report: A 45-year-old male came to the stomatology clinic, complaining of limited mouth opening and difficulty in eating. Extraoral exam revealed facial asymmetry and trismus, and intraoral exam showed a red, multilobular, sessile mass, approximately 7.0 cm in size, extending from the upper right pre-molar to the upper left lateral incisor and causing teeth dislocation. Panoramic radiography revealed radiopacity in the lesion area and interdental bone destruction. The clinical diagnostic hypothesis was peripheral ossifying fibroma. An excisional biopsy was performed, and histopathologic analysis confirmed the diagnosis. Conclusion: Although peripheral ossifying fibroma is relatively common, the size of the lesion in this patient is uncommon, leading to a concern with respect to the esthetic and functional factors.