The invention relates to a method for producing a functional prosthesis as a provision for a jaw region, allowing for the procedural steps of taking a dental impression of the jaw region to be provided with the functional prosthesis, producing a preliminary structure and possibly testing the preliminary structure in an articulator, and producing the functional prosthesis on the basis of the possibly re-worked preliminary structure. In order to produce a functional prosthesis by incorporating a preliminary structure, in which a functional analysis of the stomatognathic system can be taken into account, it is proposed that the preliminary structure be manufactured of a markable material with a hardness H that corresponds to 90% to 100% of the hardness of at least one natural or refurbished tooth of an antagonist of the jaw region, that the preliminary structure subsequently be integrated into the jaw region and remain in the jaw region for a wearing period of approximately 5 to 30 day, that the preliminary structure subsequently be removed and thereupon the functional prosthesis be manufactured taking into consideration any changes the preliminary structure underwent during its wearing.