Patient: The gum on the left side of the mouth is wider. Ct showed a tumor on the mandible. The doctor suspected ameloblastoma. According to the size of the shape, it is estimated that it has been 3-5 years. The doctor suggested surgical resection. Three schemes are put forward: 1, conservative treatment, only resection of tumor, preservation of mandible, but easy to relapse. 2. Resection of tumor and related mandible and implantation of titanium plate support. 3. Remove the tumor and related mandible, implant your own ribs, and then grow and heal. I would like to ask the experts: Which method should I take, or is there any other better method? If you do surgery, will it be dangerous and will it leave other sequelae? If you implant a titanium plate or your own ribs, will it recur in the future? Bu Rongfa, Department of Stomatology, Beijing 30 1 Hospital: CT diagnosis of ameloblastoma is for reference only, and it is not for diagnosis. If it is ameloblastoma, it is not suitable for conservative treatment and titanium plate support, or it needs autologous bone reconstruction. Any operation will be dangerous and may leave some sequelae. As far as probability is concerned, the surgical treatment of this disease is extremely unlikely to be life-threatening. Prevention of recurrence depends on tumor resection. Whether the tumor can be resected is not completely solved by naked eyes and imaging means, but bone grafting means more thorough resection. Of course, the doctor's clinical experience is also very important.