A method for designing a prosthetic element comprising the following steps: (i) ● providing a first computer file comprising: - an intra-oral three-dimensional representation of a dentition comprising at least one tooth to be restored by means of said prosthetic element; - a radiographic image of said dentition; ● identifying common reference axes on said intra-oral three-dimensional representation and on said radiographic image; ● comparing said intra-oral three-dimensional representation with said radiographic image, this comparison sub-step comprising an overlay of said common reference axes; (ii) determining a three-dimensional representation of an extrados of said prosthetic element on the basis of said first computer file; (iii) determining technical parameters comprising: - a dental protocol, and/or - a type of dental preparation, and/or - technical constraints, on the basis of said first computer file, at least one of said technical parameters being determined on the basis of the comparison sub-step of the step (i); (iv) generating a second computer file comprising a three-dimensional representation of a volumetric reduction of said at least one tooth on the basis of said technical parameters; (v) validating and/or modifying said second computer file; (vi) obtaining a three-dimensional representation of an intrados of said prosthetic element on the basis of said second validated and/or modified computer file; (vii) generating a third computer file comprising information relating to the three-dimensional representations of said extrados and intrados of said prosthetic element; (vii') generating a fourth computer file on the basis of said second validated and/or modified computer file, said fourth computer file comprising machining instructions for said at least one tooth corresponding to said three-dimensional representation of said volumetric reduction of said at least one tooth; (viii) producing said prosthetic element on the basis of said third computer file. (i) ● providing a first computer file comprising: - an intra-oral three-dimensional representation of a dentition comprising at least one tooth to be restored by means of said prosthetic element; - a radiographic image of said dentition; ● identifying common reference axes on said intra-oral three-dimensional representation and on said radiographic image; ● comparing said intra-oral three-dimensional representation with said radiographic image, this comparison sub-step comprising an overlay of said common reference axes; ● providing a first computer file comprising: - an intra-oral three-dimensional representation of a dentition comprising at least one tooth to be restored by means of said prosthetic element; - a radiographic image of said dentition; - an intra-oral three-dimensional representation of a dentition comprising at least one tooth to be restored by means of said prosthetic element; - a radiographic image of said dentition; ● identifying common reference axes on said intra-oral three-dimensional representation and on said radiographic image; ● comparing said intra-oral three-dimensional representation with said radiographic image, this comparison sub-step comprising an overlay of said common reference axes; (ii) determining a three-dimensional representation of an extrados of said prosthetic element on the basis of said first computer file; (iii) determining technical parameters comprising: - a dental protocol, and/or - a type of dental preparation, and/or - technical constraints, on the basis of said first computer file, at least one of said technical parameters being determined on the basis of the comparison sub-step of the step (i); - a dental protocol, and/or - a type of dental preparation, and/or - technical constraints, (iv) generating a second computer file comprising a three-dimensional representation of a volumetric reduction of said at least one tooth on the basis of said technical parameters; (v) validating and/or modifying said second computer file; (vi) obtaining a three-dimensional representation of an intrados of said prosthetic element on the basis of said second validated and/or modified computer file; (vii) generating a third computer file comprising information relating to the three-dimensional representations of said extrados and intrados of said prosthetic element; (vii') generating a fourth computer file on the basis of said second validated and/or modified computer file, said fourth computer file comprising machining instructions for said at least one tooth corresponding to said three-dimensional representation of said volumetric reduction of said at least one tooth; (viii) producing said prosthetic element on the basis of said third computer file.