A locking taper abutment provided with a weakened zone, having three parts. The first part is disposed in an opening of a dental implant, and connected in a threadless manner. The second part is connected to the first part, and is provided with a structural weakened zone and a protruding portion. The protruding portion is arranged under the structural weakened zone. The third part is connected to the second part for linking a dental prosthesis. The locking taper abutment fractures at the structural weakened zone, and the remaining protruding portion can be directly and easily clamped out with an instrument, without hurting an inner opening wall of the dental implant and without damaging bacterial closure of the dental implant.
