Which gingival reactive lesion frequently shows bone formation both on radiographs and under microscopic examination?

Explanation

Peripheral ossifying fibroma is a reactive growth of the gingiva that often contains calcified material resembling bone, which can be detected through radiographic imaging and microscopic analysis. Osteoma is a benign bone tumor, traumatic neuroma is a nerve tissue response to injury, and irritation fibroma is a fibrous hyperplasia without bone formation.