The invention is to solve the problem that the dental implants known in the art cannot sustain stress and achieve sufficient primary stability.The invention thus provides a dental implant, comprising an abutment and a screw adjacent to the abutment, wherein the thread is in a shape of trapezium and the ratio of the lengths of the bottom and top of the trapezium ranges from 1:1.5 to 1:4. The dental implant of the invention has optimum thread pitch so that the dental implant can readily achieve primary stability when it implants into tooth.本新型係欲解決習知牙科植體承受應力不足,無法達到良好的初級穩固的問題。因此,本新型提供一種牙科植體,其包括一牙柱體部及與該牙柱體部相連的一螺紋部,其中該螺紋部之螺紋為梯型螺紋,且該梯型螺紋的底部與頂部的長度比例為1:1.5至1:4。本新型牙科植體具最佳化螺紋間距,可使植體植入時迅速達到初級穩固。12‧‧‧牙柱體部14‧‧‧螺紋部
