The invention provides a dental implant, comprising an abutment and a screw adjacent to the abutment, wherein the helix angle of the last thread of the screw ranges from 40° to 50°, and the helix angle of the continuously increases an angle ranging from 1° to 10° from the last thread to the thread having an angle of 70° to 80° to form a screw comprising threads having increased helix angle and progressive sharpness.本發明提供一種牙科植體,其包括一牙柱體部及與該牙柱體部相連的一螺紋部,其中該螺紋部末端螺紋的截面角為40°至50°,自末端螺紋起螺紋截面角以1°至10°依序遞增至70°至80°,形成螺紋部包含由末端起依序由尖漸鈍的螺紋。1...牙科植體2...牙科植體3...牙科植體4...牙科植體12...牙柱體部14...下段螺紋部16...上段螺紋部22...牙柱體部24...下段螺紋部26...上段螺紋部32...牙柱體部34...下段螺紋部36...上段螺紋部42...牙柱體部44...下段螺紋部46...上段螺紋部142...末端螺紋144...最鈍螺紋146...鄰接最鈍螺紋之螺紋242...末端螺紋244...最鈍螺紋342...末端螺紋344...最鈍螺紋346...螺紋442...末端螺紋444...最鈍螺紋446...螺紋
