The object of the present invention is to provide an implant that enables functional periodontium formation around the implant after transplantation of a dental implant. The dental implant of the present invention is characterized in that a tooth germ tissue-derived or a periodontal membrane tissue-derived cell mass is placed on the surface of the implant, the surface of the implant on which the cell mass is to be placed is the whole or a part of the surface which is surrounded by the alveolar bone of the recipient at the time of implant transplantation.