A dental implant system includes an implant, a pile body, and a cover. The implant has a first threaded hole. The pile body has a central axis and includes a platform portion, a first threaded portion, and a second threaded portion. The platform portion has a first surface and a second surface opposite to each other. The first threaded portion is disposed on the first surface along the central axis and fastened to the first threaded hole. The second threaded portion is disposed on the second surface along the central axis. The external thread of the second threaded portion has a first axial width. The cover has a second threaded hole. The second threaded portion is fastened to the second threaded hole. The internal thread of the second threaded hole has a second axial width. The external thread of the second threaded portion and the internal thread of the second threaded hole have the same pitch, and a difference exists between the first axial width and the second axial width, so as to allow the fastened cover and the pile body to move relative to each other along the central axis.一種人工牙植體系統包含植入體、樁柱體及蓋體。植入體具有第一螺孔。樁柱體具有中心軸,並包含平台部、第一螺紋部及第二螺紋部。平台部具有相對的第一面及第二面。第一螺紋部沿中心軸設置於第一面,並鎖固至第一螺孔。第二螺紋部沿中心軸設置於第二面。第二螺紋部的外螺紋具有第一軸向寬度。蓋體具有第二螺孔。第二螺紋部鎖固至第二螺孔。第二螺孔的內螺紋具有第二軸向寬度。第二螺紋部的外螺紋與第二螺孔的內螺紋具有相同的螺距,且第一軸向寬度與第二軸向寬度之間具有差值,進而允許相互鎖固的蓋體與樁柱體沿著中心軸相對移動。12‧‧‧樁柱體120‧‧‧平台部120a‧‧‧第一面120b‧‧‧第二面120c‧‧‧環狀凹槽122‧‧‧第一螺紋部124‧‧‧第二螺紋部124b‧‧‧頂面14‧‧‧蓋體140‧‧‧第二螺孔140b‧‧‧底面142‧‧‧環狀端面16‧‧‧環狀彈性墊圈A‧‧‧中心軸G‧‧‧間隔P‧‧‧螺距W1‧‧‧第一軸向寬度W2‧‧‧第二軸向寬度
