Florid cemento-osseous dysplasia (FCOD) is benign and exhibits multifocal involvement of tooth-bearing areas of the jaw. Initially, the lesions are radiolucent but become mixed. In late stages, the lesions change into a radiopaque mass with a thin radiolucent rim. Most FCOD cases are asymptomatic, and conservative treatment is recommended. However, surgical intervention is necessary in secondary infected cases. Because of hypovascularity, infected lesions are difficult to manage and do not respond to antibiotic medications. This clinical report describes the treatment of secondary infection of an FCOD lesion with both conservative and surgical interventions.

• 홍영준(서울대학교 치과병원 구강악안면외과) | Young-Joon Hong (Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul, Korea)
• 최용석(서울대학교 치과병원 구강악안면외과) | Yong-suk Choi (Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul, Korea)
• 명훈(치의학연구소) | Hoon Myoung (Dental Research Institute, Seoul National University, Seoul, Korea)