The utility model belongs to the technical field of
medical instruments, and particularly relates to a
dental drill for
implant surgery, which comprises a
drill handle and a
drill body arranged at one end of the
drill handle, the drill body is provided with a plurality of blades axially and spirally distributed, and the blades converge on the end face far away from the drill
handle to form an invasion
cutting portion with taper. The
cutting edges form a chambering part extending spirally on the cambered surface of the drill body, and end
chip grooves with the number smaller than that of the
cutting edges are formed in the cutting part. The axial end of the drill body is provided with the cutting blade with taper, the inclined groove for cuttings to invade is formed in the hole opening of the pre-formed
small hole, so that the
dental drill can smoothly drill into the pre-formed
small hole, the blade is prevented from being clamped in the
small hole, the cutting part is provided with the end
chip grooves with the number unequal to that of the blade, and the blade back with the
axial compression area unequal to that of the blade is arranged, so that the tooth drill can smoothly drill into the pre-formed small hole. The blades on the invasion cutting part are subjected to different axial pressures, and single blade concentrated stress is formed by using the
pressure difference, so that the invasion efficiency is improved.