A dental drill at least includes a shank, a drilling body, and a stopper between the shank and the drilling body. An upper surface and a lower surface of the stopper are connected to the shank and the drilling body, respectively. The stopper has at least one notch extending from the upper surface of the stopper to the lower surface of the stopper.一種植牙鑽針,至少包括一刀柄部、一鑽體以及一阻擋部。阻擋部係位於刀柄部與鑽體之間,且阻擋部之上表面和下表面分別連接刀柄部和鑽體,其中阻擋部具有至少一槽口,此槽口係自阻擋部之上表面延伸至阻擋部之下表面。1000‧‧‧植牙鑽針1100‧‧‧刀柄部1200‧‧‧阻擋部1200a‧‧‧上表面1200b‧‧‧下表面1200c‧‧‧側表面1201‧‧‧槽口1800‧‧‧鑽體d1‧‧‧軸心
