Method for manufacturing a drilling template and a support piece for positioning this drilling template in relation to the bone of a jaw, the drilling template being provided with at least one guide opening for drilling bore holes in said bone for inserting at least one implant for mounting a dental prosthesis, wherein, according to the method, a digital mould of the jaw is generated such that it can be connected virtually fittingly to soft tissue of the jaw, wherein, based on this digital mould, a digital model for a dental prosthesis is designed, such that it can connect to said soft tissue of the jaw, wherein a provisional dental prosthesis is manufactured on the basis of said digital model of the dental prosthesis and this provisional dental prosthesis is positioned on the relevant jaw and at least one image of the jaw with the provisional dental prosthesis is generated by means of tomography, wherein a position and orientation for said at least one implant are then selected on the basis of said image, characterised in that, on the basis of the digital model of the dental prosthesis, a digital model for a bone crest part is generated, in which this bone crest part must extend opposite the crest of the jaw and contains prosthetic teeth whose shape and mutual position correspond to prosthetic teeth provided on said dental prosthesis, and wherein, on the basis of the digital model of the dental prosthesis, a digital model for said support piece is also generated, which support piece should extend at least partially opposite the bone of the jaw, wherein coupling devices are provided to the support piece in order to connect the bone crest part to the support piece in a detachable manner, so that the external shape of the whole of the bone crest part connected to the support piece is substantially identical to that of said dental prosthesis, wherein the thus designed bone crest part and support piece are manufactured on the basis of said digital models, wherein, based on the selected position and orientation of said at least one implant, said drilling template is designed such that this drilling template can be attached to said support piece. characterised in that, on the basis of the digital model of the dental prosthesis, a digital model for a bone crest part is generated, in which this bone crest part must extend opposite the crest of the jaw and contains prosthetic teeth whose shape and mutual position correspond to prosthetic teeth provided on said dental prosthesis, and wherein, on the basis of the digital model of the dental prosthesis, a digital model for said support piece is also generated, which support piece should extend at least partially opposite the bone of the jaw, wherein coupling devices are provided to the support piece in order to connect the bone crest part to the support piece in a detachable manner, so that the external shape of the whole of the bone crest part connected to the support piece is substantially identical to that of said dental prosthesis, wherein the thus designed bone crest part and support piece are manufactured on the basis of said digital models, wherein, based on the selected position and orientation of said at least one implant, said drilling template is designed such that this drilling template can be attached to said support piece.