Effect of a calibration aid and the intraoral scanner on the registration of a partially edentulous maxilla: an in vitro study
Statement of problem - Precise data are a prerequisite for accurately fitting restorations. Therefore, intraoral scanners have to be reliable. Data on differences between the same model of intraoral scanning systems are lacking. - Purpose - This in vitro study evaluated differences in the scanning a...
Gespeichert in:
| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
February 2025
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| In: |
The journal of prosthetic dentistry
Year: 2025, Jahrgang: 133, Heft: 2, Pages: 560-567 |
| ISSN: | 1097-6841 |
| DOI: | 10.1016/j.prosdent.2024.02.019 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.prosdent.2024.02.019 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0022391324001434 
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| Verfasserangaben: | Sophia Boehm, Dr med dent, Stefan Rues, Dipl-Ing, Alexandra Balzer, Peter Rammelsberg, Prof Dr med dent, and Moritz Waldecker, PD Dr med dent |
MARC
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| 245 | 1 | 0 | |a Effect of a calibration aid and the intraoral scanner on the registration of a partially edentulous maxilla |b an in vitro study |c Sophia Boehm, Dr med dent, Stefan Rues, Dipl-Ing, Alexandra Balzer, Peter Rammelsberg, Prof Dr med dent, and Moritz Waldecker, PD Dr med dent |
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| 520 | |a Statement of problem - Precise data are a prerequisite for accurately fitting restorations. Therefore, intraoral scanners have to be reliable. Data on differences between the same model of intraoral scanning systems are lacking. - Purpose - This in vitro study evaluated differences in the scanning accuracy of a partially edentulous maxilla between combinations of new intraoral scanners of a single model from the same manufacturer (Primescan; Dentsply Sirona) and several calibration aids. - Material and methods - The in vitro reference model simulated a maxilla with 6 prepared teeth for a complete arch fixed partial denture. Five precision ceramic balls were used to detect dimensional deviation between the reference model and the scan. Distances were divided into 4 categories, from short distances between 2 neighboring precision balls to the cross-arch distance with the scan path comprising all 5 balls. For each combination of 4 new intraoral scanners and their respective calibration aids, 12 model registrations were generated. The data were statistically analyzed using ANOVA (α=.05). - Results - Distance deviations increased with increasing scan path length and were significantly affected by the covariates “scanner” (P≤.023) and, for 3 of 4 distance categories, the “calibration aid” (short, medium, and long distances: P≤.013). For short and medium distances, acceptable scanning results were achieved for all test groups. The largest deviation was 539 µm for the cross-arch distance. - Conclusions - Scanning accuracy depends on the scanner and the calibration aid used, in particular, for spans exceeding a single quadrant. | ||
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