Purpose: To update data on the transfer accuracy of digital implant impressions by using a

coordinate-based analysis, latest intraoral scanners (IOSs) were investigated in an established

clinical close model set-up. Materials and Methods: An implant master model (IMM) of the

maxilla with four implants in the posterior area (#14/#24 and #16/#26) and a reference cube

was scanned with four different IOS (i700 (Medit), Primescan (Dentsply Sirona), Trios 4 and

Trios 5 (3Shape) ten times each. Datasets were compared with a reference dataset of IMM

that was generated with x-ray computed tomography in advance. 3D deviations for the

implant-abutment-interface points (IAIPs) were calculated. Statistical analysis was performed

by multifactorial ANOVA (p < .05). Results: Overall deviations for trueness (mean) ±

precision (SD) of the IAIPs ranged from 88±47 μm for the Primescan, followed by 112±57

μm for the i700, 121±42 μm for the Trios 4 and 124±43 μm for the Trios 5 with decreasing

accuracy along the scan path. For trueness, one significant difference between the Primescan

and the T4 was detected for one implant position. For precision, no significant differences

were noticed. Conclusions: Although the latest IOS showed a significant improvement in

transfer accuracy, the accumulating deviation along the scan path is not yet resolved.

Considering the Trios system, the innovation seems to be limited as no improvement could be

detected between Trios 4 and 5.