Provided is a dental implant structure for recovering or improving function of a lost or damaged tooth. A mesh plate 1 for a dental implant with a plurality of holes 4 is loaded and fixed on an alveolar bone from which a tooth is lost. A barrier 9 for preventing proliferation of an epithelium and a gingival connective tissue covers the mesh plate 1 at a predetermined height from the mesh plate 1. Then, an alveolar bone can be regenerated from a blood clot flowed through the plurality of holes into a space defined by the mesh plate 1 and the barrier 9. As such, the mesh plate 1 can be strongly fixed to the alveolar bone with the help of the regenerated alveolar bone. Furthermore, an upper implant structure fixed on an abutment 2 protruding from the mesh plate 1 can be strongly fixed to the alveolar bone.