The present invention relates to an orthodontic implant structure (2) to be used by being implanted in a bone in the oral cavity. The orthodontic implant structure is provided with: first screws (6, 6B) comprising a screw body (6b) and an engaging portion (14); plate securing implements (12, 13); a second screw; and a base plate which has a first surface (4p) and a second surface (4q), and in which first attachment holes (24A, 24B) and a second attachment hole (26) are formed.