A kind of dental bone nail has a head and the whole body portion,Head is equipped with a driving portion,Bone nail is rotated to mean for applying,One end of driving portion is stretched towards its axial direction sets a neck,Neck finish is equipped with a stop block,In order to for hooking drawstring； And body portion sets the one end of what driving portion with respect to what neck,And towards mutually extending direction on the contrary extends with neck,Body portion what far from the direction of driving portion sequentially be equipped with a triangle threaded section and a self tapping threaded section,Wherein the length of the two respectively accounts for the 15% to 25% and 75% to 85% of threaded section total length,And screw pitch ratio is 1:2,And the end of what self tapping threaded section more along its it is axially extending go out one with self tapping thread pointed cone section,And have a blade part across setting on what pointed cone section and self tapping threaded section,Gum can not be pierced to the guide hole on precise positioning what gum and on the skew.一種牙科用骨釘具有一頭部及一身部，頭部設有一驅動部，用以施用工具轉動骨釘，驅動部之一端朝其軸向伸設一頸部，頸部末端設有一擋止塊，俾供勾掛拉繩；而身部設於驅動部相對於頸部之一端，且朝與頸部相反之延伸方向延伸，身部於遠離驅動部的方向上依序設有一三角螺牙段及一自攻螺牙段，其中二者之長度各佔螺牙段總長度之15%至25%及75%至85%，且螺距比為１：２，而於自攻螺牙段之末端更沿其軸向延伸出一具有自攻螺牙之尖錐段，且有一切刃部跨設於尖錐段與自攻螺牙段上，用以精準定位於牙床上的導孔且可不歪斜地鑽入牙床。
