Method for manufacturing a dental prosthesis and an appliance for implantation thereof

Appliance intended for a dental prosthesis implantation in a jaw of a patient, comprising

• at least one pattern (1) produced from an impression of the jaw of the patient,
• a radiological guide (7), also produced from this impression, and provided with at least one artificial radiological tooth (6) and radiological references (28),
• a computer,
• an image processing program for controlling the computer so as to make up, from a two-dimensional radiological image of the above-mentioned radiological guide in position on the jaw of the patient, a three-dimensional image and to insert, per tooth, a virtual implant selected in a surgically appropriate position in the two- and three-dimensional images of the jaw and a virtual selected guide cylinder orientated coaxially with the virtual implant in the two- and three-dimensional images of the radiological guide,
• a positioning and drilling tool in which the radiological guide (7) is positioned by means of its radiological references (28), this tool being capable, on the basis of data collected and calculated by the computer in relation to the images in two and three dimensions, to drill in each of the teeth of the radiological guide a first hole (8) in order to receive a guide cylinder (9) disposed and oriented like the virtual guide cylinder on the images in two and three dimensions,
• a guide cylinder (9) to be housed in each of the first holes (8) drilled in the radiological guide (7) that thus becomes a surgical guide (11), each guide cylinder being provided with at least one first external reference (10),
• a least a first drill bit (13) which, when the surgical guide (11) is in position on the pattern (1), can be guided through each guide cylinder (9) and is capable of drilling there, in the pattern, a second hole (16) according to the orientation of the corresponding guide cylinder,
• an implant analogue (17) corresponding to each virtual implant selected to be housed in each second drilled hole (16) in the pattern (1), using an analogue holder (18) to be slid axially through the corresponding guide cylinder (9), each analogue holder comprising stop means (20) that stop the sliding of the analogue holder (18) with respect to the guide cylinder (9) when the analogue (17) is in a position corresponding to the surgically appropriate position of the images in two and three dimensions, and at least one second external reference (23) to be matched, by rotation, with the said at least one first external reference (10) of the guide cylinder (9),
• a dental prosthesis (25, 26) adaptable to the pattern (1) provided with the above-mentioned implant analogue (17) or analogues,
• at least a second drill bit which, when the surgical guide (11) is in position on the jaw of the patient, can be guided through each guide cylinder (9) and is capable of drilling there third holes in the jaw according to the orientation of the guide cylinder, the said at least one second drill bit comprising stop means which, against the guide cylinder, stop a penetration of the drill bit at a depth that corresponds to that of the said surgically appropriate position of the virtual implant on the images in two and three dimensions, and
• an implant corresponding to each virtual implant selected to be housed in each third hole in the jaw by means of an implant holder to be slid axially through the corresponding guide cylinder, each implant and its implant carrier having dimensions and shapes identical to the implant analogue (17) and to its analogue holder (18) used in the pattern (1), each implant holder thus comprising stop means that stop the sliding of the implant holder in the guide cylinder (9) when the implant is in the above-mentioned surgically appropriate position, and at least a third external reference to be matched, by rotation, with the said at least one first external reference (10) of the guide cylinder (9), the implants thus fixed in the jaw being in position so as to receive the dental prosthesis (25, 26) previously implemented on the pattern (1).