The dental implant structure of the present invention comprises a thick threaded portion, a thin threaded portion, a plurality of serrations and a bottom through hole. The interior of the thick threaded portion includes a chip space, and the periphery of the chip space defines an inner bore wall. Further, the thin thread portion is an adjacent thick thread portion. A plurality of serrations are located at the lowermost end of the thick threaded portion. In addition, a bottom through hole penetrates the bottom of the thick threaded portion, and the serrations surround the bottom through hole. In this way, the present invention can eliminate multiple drilling and gradually expanding modes during tooth implantation, thereby shortening the time of implanting, reducing oral trauma, and achieving the effect of pulling out the seed.本新型之植牙體結構包括一粗螺紋部、一細螺紋部、多個鋸齒及一底部通孔。粗螺紋部的內部包括一容屑空間，容屑空間的周邊定義有一內孔壁。此外，細螺紋部是相鄰粗螺紋部。多個鋸齒是位於該粗螺紋部的最下端。另外，底部通孔貫穿該粗螺紋部的底部，且這些鋸齒環繞底部通孔。藉此，本新型可於植牙時消除多次鑽入、逐步漸擴方式，用以縮短植牙時間、減少口腔創傷，達到即拔即種的效果。
