Pilot drill (1) for the preparation of a stepped drill (62, 63, 64) in the form of a blind hole, which must be inserted into a maxillary bone (5) to accommodate a dental implant (4), with: a ) a pilot tip (10), which is arranged at the apical end of the pilot drill (1) and which has pointed edges (101)； b) a pilot guide (11), which extends from the pilot tip (10) in the direction of the coronal end of the pilot drill (1)； c) a drill neck (12), which is located above the pilot guide (11) and has a drill diameter (b2) greater than the drill diameter (b1) of the pilot guide (11), d ) a drilling rod (13), located above the drilling neck (12), to which a coupling (14) can be connected as a coronal end； e) at least one guide edge (112) located laterally in the pilot guide (11)； f) a step (124), as a transition from the pilot guide (11) to the drill neck (12)； g) at least one stepped edge (125) in the step (124)； and h) at least one spiral groove (122) and an adjacent chamfer (123), characterized in that i) the sharp edges (101) in the pilot tip (10) are formed sharp and cutting the center； j) carvings (111) extend from the sharp edges (101) upwards of the pilot guide (11)； k) the stepped edges (125) in the step (124) are formed sharply； and l) the guide edges (112) are blunt, not sharp.Broca piloto (1) para la preparación de un taladro escalonado (62, 63, 64) en forma de orificio ciego, que hay que introducir en un hueso maxilar (5) para el alojamiento de un implante dental (4), con: a) una punta piloto (10), que está dispuesta en el extremo apical de la broca piloto (1) y que presenta unos filos de punta (101)； b) una guía piloto (11), que se extiende desde la punta piloto (10) en la dirección del extremo coronal de la broca piloto (1)； c) un cuello de taladrado (12), que se encuentra por encima de la guía piloto (11) y que presenta un diámetro de broca (b2) mayor que el diámetro de broca (b1) de la guía piloto (11), d) un vástago de taladrado (13), situado por encima de
