Patent ID: 7922489

Claim:
In a process for determining the form of a duplicate of a residual tooth area which is to be fitted with a dental restoration, in which duplicate sections to be fitted with the dental restoration and/or duplicate sections determining dental restoration geometry are removed from the duplicate and form data to be allocated to the forms of the duplicate sections is determined and stored in a computer, by means of which the form of the dental restoration is calculated taking into consideration the spatial allocation of the duplicate sections, the improvement comprising storing in a computer a referencing of a base plate for the duplicate or a referencing on the duplicate produced during fabrication of the duplicate, separately placing sections of the duplicate or sections of the duplicate together with corresponding sections of the base plate connected thereto in a holding device and determining with a sensor, geometry of each duplicate or duplicate/base plate section, individually referencing the duplicate sections as to spatial allocation to each other in the referencing stored in the computer, and which is independent of the duplicate, and comparing the referencing stored in the computer with the separately determined duplicate or duplicate/base plate sections to determine the form of the duplicate of the residual tooth area.