A kind of abutment component system includes an abutment and a lock member. Abutment system includes an abutment ontology and an abutting part； Abutment this system has a perforation, and abutting part system is arranged in what perforation, and has a screw hole. Lock member system includes a locking head and a limit locking part； Locking head system extends to abut what abutting part, limit locking part system from locking head, and the thread segment with a corresponding what screw hole. Lock member rotatably passes through screw hole by thread segment and blocks and set in what abutment.一種基牙組件係包含一基牙以及一鎖固元件。基牙係包含一基牙本體以及一抵接部；基牙本體係具有一穿孔，抵接部係設置於穿孔內，並具有一螺孔。鎖固元件係包含一鎖固頭以及一限位鎖固部；鎖固頭係用以抵接於抵接部，限位鎖固部係自鎖固頭延伸出，並具有一對應於螺孔之螺紋段。鎖固元件係藉由螺紋段旋轉地穿過螺孔而卡設於基牙內。
