Accuracy of digital impressions for implant-supported complete-arch prosthesis when using an auxiliary geometry device.
| Autor: | Arikan H; Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey., Muhtarogullari M; Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey., Uzel SM; Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey., Guncu MB; Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey., Aktas G; Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey., Marshall LS; Department of Prosthodontics, New York University College of Dentistry, New York, NY, USA., Turkyilmaz I; New York University College of Dentistry, New York, NY, USA. |
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| Jazyk: | angličtina |
| Zdroj: | Journal of dental sciences [J Dent Sci] 2023 Apr; Vol. 18 (2), pp. 808-813. Date of Electronic Publication: 2023 Jan 24. |
| DOI: | 10.1016/j.jds.2023.01.012 |
| Abstrakt: | Background/purpose: Digital impressions using intraoral scanners have recently gained popularity. The aim of the present study was to evaluate the fit of full-arch screw-retained cobalt-chromium frameworks fabricated via two different digital impression methods. Materials and Methods: An edentulous resin master model with four dental implants was fabricated. Forty cobalt-chromium superstructures were fabricated and evaluated according to four groups. In Group 1, the superstructures were evaluated using an intraoral scanner to generate digital impressions. Group 2 relied on the help of an auxiliary geometric appliance in generation of digital impressions via intraoral scanner. The traditional method of splinted open-tray conventional impressions was designated for Group 3. Finally, the control group (Group 4) relied on scanning of the master model directly with a laboratory scanner. Vertical marginal discrepancy was evaluated, and data obtained were statistically analyzed. Results: The highest mean vertical marginal gap value (80.86 ± 50.06 μm) was observed for Group 1 and statistically higher than Group 2, 3, and 4 ( P < 0.05). The lowest mean vertical marginal gap value (41.98 ± 26.33 μm) was measured from Group 4 and statistically similar to Group 2 and 3 ( P > 0.05). Conclusion: It has been suggested that the use of auxiliary geometric appliances yields increased scanning accuracy. Frameworks fabricated using the traditional splinted open-tray technique were more reliable compared to those frameworks from digital impressions. Competing Interests: The authors have no conflicts of interest relevant to this article. (© 2023 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V.) |
| Databáze: | MEDLINE |
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