Original scientific paper
https://doi.org/10.15644/asc57/4/5
Accuracy Analysis of Extraoral 3D Scanning in Dental Prosthetic
Marija Trpčić
; Neo Dens, Fallerovo setaliste 2, 10000 Zagreb, Croatia
Marija Majda Perišić
orcid.org/0000-0001-6295-6524
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia
Fanika Lukačević
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia
Stanko Škec
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, 10000 Zagreb, Croatia
Abstract
Objective: The study has evaluated the accuracy (trueness and precision) of seven extraoral scan-ners when scanning two different types of jaws: simplified jaw with sharp edges and abutments and realistic jaw with natural teeth. The accuracies of extraoral scanners were compared, and their compliance with the required clinical accuracy levels was discussed.Material and methods: Ten scans were made with each scanner for both models. The comparison of the selected dental scanners relied on reference scans made for both models. Trueness, precision, and the distribution and value of laboratory scan points’ deviations were assessed for each scanner across the models. Results: The trueness for the model of the simplified jaw with abutments ranged from 16.15 to 49.78 μm. The measured precision values for the same model ranged from 4.33 to 29.49 μm. For the model of the realistic jaw with natural teeth, the trueness results ranged from 11.32 to 24.55 μm, while the obtained precision values were between 2.29 and 18.06 μm. Conclusion: The revealed dissimilarities in the accuracies of scanners and their ranking when scanning different models lead to the conclusion that model selection is critical for the research design. All the scanners met the clinical accuracy requirements and are suitable for use in laboratories for scanning jaws with abutments and jaws with natural teeth. However, the accuracy values reported by the manufacturers of scanners are better than those obtained in this study. Furthermore, the results suggested that blue light scanners outperform white light and laser scanners.
Keywords
Jaw; Three-Dimensional Imaging; Dimensional Measurement Accuracy; Dental Technology; Dental Prosthetics; 3D Scanning; Extraoral Scanners; Trueness; Precision
Hrčak ID:
312061
URI
Publication date:
27.12.2023.
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