The present invention relates to a locking taper type pillar body with a weakened zone, comprising a first portion, a second portion and a third portion. The first portion is used for installing in an opening of a dental implant body, the first portion and the dental implant body are connected in a non-threaded manner. The second portion has a structural weakened zone and a protrusion part, the possible fracture of the locking taper type pillar body will occur in the structural weakened zone and the protrusion part is provided below the structural weakened zone. Because possible fractures of the locking taper type pillar body occur in the structural weakened zone, and the residue of the protrusion part may be advantageously clipped out by using an instrument, a fractured locking taper type pillar body can be easily and safely removed during a clinical operation, thereby significantly reducing the difficulty of clinical operations, while without hurting the inner hole wall of dental implant, and the bacterial closeness will not be destroyed neither.本發明係關於一種具弱化區之鎖定楔銷型支柱體,包括:一第一部分、一第二部分及一第三部分。該第一部分用於設置於一牙植體之一開孔內,該第一部分與該牙植體為無螺紋連接。該第二部分具有一結構弱化區及一突起部,該鎖定楔銷型支柱體之可能斷裂發生在該結構弱化區,該突起部設置於該結構弱化區下。本發明該鎖定楔銷型支柱體之可能斷裂發生在該結構弱化區,且殘留之該突起部可利於使用一器械直接夾出,使斷裂之鎖定楔銷型支柱體之移除臨床操作簡易及安全,可大幅降低臨床操作的困難度,且不會傷及牙植體之內孔壁,也不會破壞其細菌封閉性。20‧‧‧牙植體21‧‧‧開孔30‧‧‧本發明第一實施例之鎖定楔銷型支柱體31‧‧‧第一部分32‧‧‧第二部分33‧‧‧第三部分321‧‧‧結構弱化區322‧‧‧突起部323‧‧‧下端區324‧‧‧中端區325‧‧‧上端區
