A one-piece obliquely implanted dental implant having an implant body integrally formed with an abutment a first central axis of the implant body forms a tilting angle against a second central axis of the abutment, which angle is 5∼25°, and an engaging recess extends from the abutment downwards along the first central axis, a rotation tool thus can be used to implant the implant body by rotating in the oblique front gum.
