Method for producing a dental drilling template

A method of making a dental drilling template shaped to the jaw structure of a patient, the drilling template having at least one guide passage for guiding a drilling tool, wherein

• an impression element is produced with a negative impression of the jaw structure of a patient to be treated,
• the impression element is provided with a radiological reference and positioned in or on the patients jaw region,
• the jaw of a patient is radiologically recorded and positional data of an implant and the guide passage required therefor defined relative to the reference provided on the impression element on the basis of displayed data of a virtual jaw model,
• the guide passage is positioned in accordance with the positional data on the impression element,
• a mounting body having a fitting adapter and adapted to the required position of the guide passage is produced by material machining by a machining apparatus,
• a form fitting mounting structure that is periodic in at least two directions is produced on the mounting body during its production in accordance with the positional data,
• a passage element equipped with the guide passage in the form of a metallic sleeve, and having a fitting area that corresponds to the fitting adapter of the mounting body, is secured to the produced mounting body,
• a subassembly formed by the interconnected mounting body and the passage element is fixed by the form fitting mounting structure of the mounting body in a position calculated in accordance with the positional data on a corresponding form fitting structure of a mounting plate,
• the impression element is secured by a securing element opposite the mounting plate, and
• the passage element is secured to the impression element by an adhesive and by detaching it from the mounting body so that the impression element becomes part of the drilling template.