The aim of this study is report the treatment a case peripheral ossifying fibroma. In report, we present clinical course 23-year-old female patient with mass in gingival tissue. was submitted to excisional biopsy and defect generated by removal lesion corrected using biomaterials. One year follow-up, it not possible see any esthetic when compared contralateral side.

Giant cell-rich osteosarcoma of the jaw (JGCRO) is very rare but it diagnostically important because its poor prognosis compared to other variants osteosarcoma. We report a case recurrent JGCRO initially diagnosed as an ossifying fibroma. The clinical presentation, radiologic and histologic features intermediate outcome treatment are highlighted.