Isolated lesions of gingiva arise in succession to the hyperinflammatory reactions in response to the underlying local irritants. Despite their overlapping clinical and histological features, these lesions are distinctive regarding their biological behavior. Recurrence has been reported after surgical excision because of the incomplete removal of underlying local irritants. This article describes the clinical and histological features of four localized gingival lesions, adding a note on their molecular pathogenesis and surgical management.

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