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Current Oral Health Reports

Erschienen in:

11.11.2020 | Dental Restorative Materials (M Özcan & P Cesar, Section Editor)

Digital Intraoral Impression Methods: an Update on Accuracy

verfasst von: Mercedes Robles-Medina, Marta Romeo-Rubio, Maria Paz Salido, Guillermo Pradíes

Erschienen in: Current Oral Health Reports | Ausgabe 4/2020

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Abstract

Purpose of Review

The increased implementation of intraoral scanners (IOSs) in different dental fields has created the need for IOS’s accuracy assessment by the scientific community. Hence, the aim of this literature review is to provide the current ``state of the art´´ regarding the accuracy of optical impression systems.

Recent Findings

The reported IOS’s accuracy in dentistry is highly variable and controversial among studies. Researches performed either in vitro or in vivo considering digital intraoral impressions a valuable alternative to conventional impression techniques; however, the clinical situation has to be taken into consideration. Most studies coincide that IOSs show highly accurate results when partial-arch scans are performed, whereas in cross-arch scans especially in implant dentistry, the choice of a complete digital workflow sometimes has to be avoided if the clinical situation is highly challenging.

Summary

New versions of IOSs guarantee scan accuracy in most clinical situations. However, blood and saliva in prepared teeth impressions continue affecting the reading of the surfaces. On the other hand, multiple implant scenarios in edentulous mandibular arches still result in accuracy limitations.

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22.

• Arakida T, Kanazawa M, Iwaki M, Suzuki T, Minakuchi S. Evaluating the influence of ambient light on scanning trueness, precision, and time of intra oral scanner. J Prosthodont Res. 2018;62(3):324–9. - The 3900K and 500lux condition is the most appropriate lighting condition for taking a digital impression. This condition is typical of clinical settings. - High illuminance ambient light increased the scanning time.

23.

• Revilla-Leon M, Subramanian SG, Ozcan M, Krishnamurthy VR. Clinical study of the influence of ambient light scanning conditions on the accuracy (trueness and precision) of an intraoral scanner. J Prosthodont. 2020;29(2):107–13. - Light conditions significantly influenced on the scanning accuracy of the IOS evaluated. - The extension of the digital scan was a scanning accuracy influencing factor. - The higher the extension of the digital scan performed, the lower the accuracy values obtained. - Ambient light scanning conditions influenced differently depending on the extension of the digital scans made.

24.

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26.

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30.

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• Medina-Sotomayor P, Pascual-Moscardó A, Camps I. Accuracy of four digital scanners according to scanning strategy in complete-arch impressions. PLoS One. 2018;13(9):e0202916. - Identify and compare the scanning strategy with the greatest accuracy, in terms of trueness and precision, of four intraoral scanners in the impression of a complete dental arch. - The digital impression systems used in the experiment provided sufficient flexibility for the acquisition of 3D images without this affecting the accuracy of the scanner.

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Titel: Digital Intraoral Impression Methods: an Update on Accuracy
verfasst von: Mercedes Robles-Medina
Marta Romeo-Rubio
Maria Paz Salido
Guillermo Pradíes
Publikationsdatum: 11.11.2020
Verlag: Springer International Publishing
Erschienen in: Current Oral Health Reports / Ausgabe 4/2020
Elektronische ISSN: 2196-3002
DOI: https://doi.org/10.1007/s40496-020-00285-z

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Springer Medizin

Digital Intraoral Impression Methods: an Update on Accuracy

Abstract

Purpose of Review

Recent Findings

Summary

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Abstract

Purpose of Review

Recent Findings

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