Patent ID: 8662890

Claim:
Method for manufacturing a dental restoration for at least one section of a dental arch of a mouth, based on three-dimensional optical individual measurements performed on an intra-oral basis of an area that contains at least one section of the dental arch area to obtain a plurality of individual data sets which are combined to obtain a digital overall data set, comprising the steps of: a) performing intra-oral, three-dimensional, optical measurements of at the least one section of the dental arch area without a reference to obtain first individual data sets; b) positioning a reference which supplies three-dimensional information in relation to the dental arch area; c) performing intra-oral, three-dimensional, optical measurements of the at least one section of the dental arch area, with the reference positioned in relation thereto, to obtain second individual data sets; and d) combining the first individual data sets together with the second individual data sets with consideration of the reference, to calculate thereby the overall data set including corrections resulting from the difference between measured and real geometry of the reference; wherein the reference is a plate-shaped element that follows the dental arch of the mouth.