Evaluation of laboratory scanner accuracy by a novel calibration block for complete-arch implant rehabilitation

•A novel calibration block was developed to test the accuracy of laboratory scanner in complete-arch implant scenarios.•45°angulation of dental implants would lead to larger distortions in laboratory scans.•Accuracy of laboratory scanners was not affected by the inter-implant distance.•The Zfx and IScan scanner performed the best in scanning tooth-supported and implant-supported prostheses, respectively.