To compare the accuracy (trueness and precision) of direct digitization of four different dental gap situation with two IOS (intraoral scanner).



IOS (intraoral scanner)
Each model situation was scanned by (1) OMN (Cerec AC Omnicam) and (2) PRI (Cerec Primescan AC) (n = 30). 
Cerec AC Omnicam
Each model situation was scanned by (1) OMN (Cerec AC Omnicam) and (2) PRI (Cerec Primescan AC) (n = 30). 
Cerec Primescan AC
A dataset (REF) of the reference object was generated by a coordinate measuring machine. 
coordinate measuring machine
Datasets of all 8 test groups (N = 240) were analyzed using inspection software to determine the linear aberrations in the X-, Y-, Z-axes and angular deviations. 
inspection software
Clinical oral investigations
D017076:Computer-Aided Design; D000078332:Data Analysis; D003724:Dental Arch; D003761:Dental Impression Technique; D006801:Humans; D021621:Imaging, Three-Dimensional; D007575:Jaw, Edentulous; D003765:Models, Dental
Kontis Panagiotis P ;Güth Jan-Frederik JF ;Keul Christine C 