In mandibular tumor treatment case, mandibulectomy is frequently performed. This mandibulectomy may result in facial changes, esthetic and phonetic problems, reduced mastication and swallowing functions. When we treat this patients, using primary reconstruction with autogenous bone graft or secondary reconstruction with delayed bone graft after applied bridge plate removal. After bone graft is done, prosthodontic treatment is essential for the rehabilitation of facial esthetics, phonetics and mastications. But, tissue-supported prostheses have the problems of frequent breakdown of underlying bone and soft tissue, increasing risk of intraoral infection, mobility of prostheses, unsatisfactory function, problems in esthetics, poor patient co-operation. Now, osseointegrated implants are used as the main treatment of fully or partially edentulous state of mandible, long term clinical data are satisfactory, too. So, we may choose the implant, as the useful prosthodontic treatment method of mandibular reconstruction using autogenous bone graft. Regardless of this harmful situation, as integration of grafted bone, conjugated chemotherapy or radiotherapy and reduced vascularity and cell activity(in malignant mandibular tumor), and relatively poor condition of grafted bone, thoughtful treatment plan, delicate and corrective technique, persistent follow-ups make much more satisfactory results than those of removable prostheses. So, we reported a good results in the case of implat-retained prostheses after mandibulectomy and autogenous bone graft.