Drilling tool (6) for dental implant surgery this tool (6) comprising: a drilling head (7) a cylindrical mandrel rigidly connected to the head (7) and coaxial therewith this mandrel being able to be mounted in a pin in order to effect a rotational coupling of the drilling head (7) to this pin a mesio distal guide cylinder (18) coaxial with the drilling head (7) this mesio distal guide cylinder (18) having an external diameter (D2) called the mesio distal guide diameter greater than the drilling diameter (D1) a vestibulo lingual guide cylinder (19) coaxial with the drilling head (7) and situated under the mesio distal guide cylinder (18) this vestibulo lingual guide cylinder (19) having an external diameter (D3) called the vestibulo lingual guide diameter smaller than the mesio distal guide diameter (D2).
