An implant (5) includes an implant body (10) in which a fitting hole portion (14) having a taper shape is formed, and an abutment (20) having a fitting shaft portion (22) having a taper shape. A pressure-withstanding mechanism (60) configured by the fitting hole portion (14) and the fitting shaft portion (22) and a rotation-preventing mechanism (70) preventing rotation of the abutment (20) with respect to the implant body (10) are integrally formed.
