ArticleClinical oral investigations2025
Accuracy of intraoral scans of the edentulous maxilla - an in vitro study.
Article in Clinical oral investigations, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Comparison of Three-Dimensional Accuracy Between Digital and Conventional Definitive Impressions of Edentulous Arches: A Clinical Study.Health science reports · 2026Article
- Digital Removable Partial Denture Fabrication Using an Intraoral Scanner and the Altered-Cast Technique for a Patient With Free-End Partial Edentulism: A Case Report.Case reports in dentistry · 2025Article
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3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
objectiveInvestigation of the accuracy of various digitalization methods and the accuracy of digitalization of different regions of the edentulous maxilla. MATERIAL AND
methodA PEEK edentulous maxilla with four spherical reference geometries served as the testing model. A reference dataset (REF) was generated using a highly accurate 3D measuring instrument. The testing model was digitized as follows (n = 25/group). Direct digitalization (DD) with intraoral scanners (IOS): 1) Cerec AC Primescan (PRI), 2) Trios 4 Move (TR4), 3) Trios 3 Wireless (TR3), 4) Indirect digitalization of PVS impression with laboratory scanner 3Shape D810 (D8I). Three-dimensional deviations between REF and TEST were evaluated (GOM Inspect) in different areas of the model: 1) Complete Surface, 2) Alveolar Ridge, 3) Vestibular Ridge, 4) Palate, 5) Posterior Seal, 6) Border. Significant differences were analyzed with the Games-Howell test for trueness (p < 0.05) and multiple comparisons Levene's test for precision (for IOS: p < 0.008, for area: p < 0.003).
resultsGroup D8I revealed the best trueness for Complete Surface (7.95 µm), Palate (9.11 µm), and Border (20.22 µm). Alveolar Ridge showed for PRI (16.45 µm) and TR4 (8.96 µm) the highest trueness. Groups TR4 and PRI resulted in significantly higher precision for Alveolar Ridge. Groups TR4 and D8I demonstrated the highest precision for Palate. Complete Surface and Alveolar Ridge showed for all digitalization methods significantly higher precision.
conclusionsIndirect digitalization of impressions remains the most accurate approach for capturing edentulous jaws, whereas IOS deliver datasets with clinically acceptable accuracy. Peripheral regions characterized by limited accessibility and smooth surface morphology tend to demonstrate increased deviations in the resulting digital datasets. CLINICAL RELEVANCE: Indirect digitalization of the impression still appears to be the most appropriate technique to access the clinical workflow for full dentures due to the superior digitalization trueness and inclusion of functional movements. Direct and indirect digitalization show nearly equal values for precision.
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