The present invention provides a two-piece root structure improvement, which mainly comprises a base and a crown fixed pillar, wherein one end of the base defines a threaded portion and a other end forms a snap groove, and at least three fixed blocks located on the inner wall are formed in the buckle groove. An insertion space is defined between each fixed block, and the other end of the crown fixing pillar defines a crown fixing portion, and the other end defines a fastening structure, and the fastening structure includes a connecting portion, at least three fixing convex portions, and a plurality of fixed convex portions respectively The aligning space between the portion and the connecting portion for accommodating the fixing block and fixing the fixing convex portions and the fixing blocks at the same time, as described above, the crown fixing struts are corresponding to the pedestal through the at least three fixing convex portions The fixed block can achieve stable locking, and because the base and the crown fixed post are two-piece structure, the crown fixing struts with different inclination angles of the pedestal can be selected according to the requirement, thereby improving the convenience of installing the surgical operation space and the teeth. The angle of the gums is correct and stable.本創作一種二件式牙根結構改良，主要包括基座及牙冠固定支柱，其中基座一端界定螺紋部另一端形成卡扣槽，位於卡扣槽內形成至少三個以上位於內壁之固定塊，各固定塊之間界定一插入空間，而牙冠固定支柱一端界定牙冠固定部另一端則界定卡固結構，卡固結構包括連接部、至少三個固定凸部以及複數分別位於各固定凸部與連接部之間且供容置固定塊同時將各固定凸部與各固定塊對位固定之對位空間，由上述可知，牙冠固定支柱透過至少三個固定凸部與基座上對應的固定塊可達到穩定卡合，同時因基座及牙冠固定支柱為兩件式結構所以可視需求而選擇對基座不同傾斜角度的牙冠固定支柱藉以提升安裝手術操作空間之便利性與牙齒牙床角度之正確穩合。
