A Mixed tumor is a tumor that derives from multiple tissue types. This lesion appears to be mostly Mixed Radiolucent and Radiopaque aspect and typical examples are odontoma, ameloblastic fibroodontoma, ameloblastic fibroma etc. A odontogenic tumor is a neoplasm of the cells or tissues that initiate Odontogenic processes. Typical example is a odontoma. The odontoma is a hamartoma of odontogenic origin. There are two types: compound and complex. A compound odontoma still has the three separate dental tissues (enamel, dentin and cementum), but may present a lobulated appearance where there is no definitive demarcation of separate tissues between the individual "toothlets". It usually appears in the anterior maxilla. The complex type is unrecognizable as dental tissues, usually presenting as a radioopaque area with varying densities. It usually appears in the posterior maxilla or in the mandible. We reported 20-years old male patient who had an atypical mixed radiolucent and radiopaque lesion on right mandibule body tentative diagnosed as complex odontoma and excised.

• 박상준(인제대학교 부산백병원 구강악안면외과학교실) | Sang Jun Park
• 정태영(인제대학교 부산백병원 구강악안면외과학교실) | Tae Young Jung
• 김도영(인제대학교 부산백병원 구강악안면외과학교실) | Do Young Kim
• 백준석(인제대학교 부산백병원 구강악안면외과학교실) | Joon Seok Baek correspondence