Process for the processing of data regarding the three- dimensional shape of dental prosthesis, which has two prosthesis sections and a connector section wherein the dental prosthesis is one of a two- unit, three- unit and multi- unit bridge or bridge substructure in which each of two neighboring units are connected by a connector, the connector corresponding to the connector section and the units corresponding to the prosthesis sections, said connector section being connected to the two prosthesis sections and said connector section being less stable than the two prosthesis sections, said process comprising the steps that: - a stability parameter and a stability criterion are determined for the connector section; wherein the stability parameter is one of: - a minimal cross- sectional area of the connector section in which case the stability criterion is a lower limit for the minimal cross- sectional area of the connector section; - a length of the connector section in which case the stability criterion is an upper limit for the length of the connector section; and - a minimal section modulus of the connector section in which case the stability criterion is a lower limit for the minimal section modulus of the connector section; - for the stability parameter, the actual value is calculated from the data; - it is checked for the connector section as to whether the actual value fulfils the stability criterion, and if not, that a warning signal is generated, wherein the determination of the stability criterion is dependent on at least one of the following prosthesis attributes: - the configuration of the prosthesis; and/or - the position of the prosthesis inside the mouth; and/or - the material and/or the cross- sectional profile of the connector section; and/or - the type of the prosthesis sections adjoining the connector section. - a stability parameter and a stability criterion are determined for the connector section; wherein the stability parameter is one of: - a minimal cross- sectional area of the connector section in which case the stability criterion is a lower limit for the minimal cross- sectional area of the connector section; - a length of the connector section in which case the stability criterion is an upper limit for the length of the connector section; and - a minimal section modulus of the connector section in which case the stability criterion is a lower limit for the minimal section modulus of the connector section; - for the stability parameter, the actual value is calculated from the data; - it is checked for the connector section as to whether the actual value fulfils the stability criterion, and if not, that a warning signal is generated, wherein the determination of the stability criterion is dependent on at least one of the following prosthesis attributes: - the configuration of the prosthesis; and/or - the position of the prosthesis inside the mouth; and/or - the material and/or the cross- sectional profile of the connector section; and/or - the type of the prosthesis sections adjoining the connector section. - the configuration of the prosthesis; and/or - the position of the prosthesis inside the mouth; and/or - the material and/or the cross- sectional profile of the connector section; and/or - the type of the prosthesis sections adjoining the connector section.