Epulis fissuratum is a reactive hyperplasia of fibrous connective tissue caused by chronic irritation from ill-fitting dentures. It presents as a fibrous tissue overgrowth along the denture border, typically in the vestibular mucosa. The lesion is benign but can cause discomfort and interfere with denture fit. Treatment involves removal of the irritant and often surgical excision of the excess tissue to restore normal anatomy and achieve proper denture adaptation. Recognizing this lesion is crucial to prevent further tissue trauma and ensure patient comfort.

Reference: Oral Pathology, Neville et al., 4th Edition.