The present invention relates to a method for positioning a guide tube D5 in a plate to be positioned on the mandible or jaw of the patient, forming a surgical guide and allowing the guide tube D5 to be exactly positioned and a perfect hole to be drilled in the patient's bone, and the implant to be subsequently positioned in the exact location planned. The present invention further relates to a reference support S1 and S2 for a dental implant, more particularly for tomographic use and/or for use as a base for fastening one or more devices for positioning guide tubes D5, allowing the positioning of one or more guide tubes in an acrylic plate or the like to be planned and determined with millimetric precision, thus acting as a surgical guide. Finally, the present invention relates to a device for positioning a guide tube D5, the device being designed to ensure the correct positioning of one or more guide tubes in an acrylic plate or the like, acting as a surgical guide.
