The present invention is an orthodontic connection tool for attaching to a screw (2, 2A, 2B) that has been embedded in a bone in the oral cavity an upper structural body (4) to which an orthodontic tool is fixed, the orthodontic connection tool being provided with a base plate (11) that is engageable with the screw； and a structural body fixture (30, 30A, 30B, 30C, 30D) that is engaged with the base plate at an arbitrary position thereof and that fixes the upper structural body in a detachable manner.
