Generation of 3D digital models of the dental arches using optical scanning techniques

Claus, Daniel; Radeke, Johanna; Zint, Michael; Vogel, A; Satravaha, Yodhathai; Kılıç, Fatih; Hibst, Raimund; Lapatki, Bernd G.

doi:10.1053/j.sodo.2018.10.006

Cited by 13 publications

(7 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The characteristic feature between imaging processes in IOS is that their field of view is unable to capture all surfaces simultaneously [15,16]. When the desktop scanners in dental laboratories scan the full arch, the first image covers the entire object from a single sensor position, especially scanners with structured light, therefore generating an overall mesh even if some details are missing in hidden areas [17,18]. The missing information is acquired from a different perspective during the rotation of the object, and the following images are registered into the original mesh employing the multiple overlapping regions [19,20].…”

Section: Introductionmentioning

confidence: 99%

Comparing the trueness of seven intraoral scanners and a physical impression on dentate human maxilla by a novel method

et al. 2020

View full text Add to dashboard Cite

Backgrounds: Intraoral scanner (IOS) accuracy is commonly evaluated using full-arch surface comparison, which fails to take into consideration the starting position of the scanning (scan origin). Previously a novel method was developed, which takes into account the scan origin and calculates the deviation of predefined identical points between references and test models. This method may reveal the error caused by stitching individual images during intraoral scan. This study aimed to validate the novel method by comparing the trueness of seven IOSs (Element 1, Element 2, Emerald, Omnicam, Planscan, Trios 3, CS 3600) to a physical impression digitized by laboratory scanner which lacks linear stitching problems. Methods: Digital test models of a dentate human cadaver maxilla were made by IOSs and by laboratory scanner after polyvinylsiloxane impression. All scans started on the occlusal surface of the tooth #15 (universal notation, scan origin) and finished at tooth #2. The reference model and test models were superimposed at the scan origin in GOM Inspect software. Deviations were measured between identical points on three different axes, and the complex 3D deviation was calculated. The effect of scanners, tooth, and axis was statistically analyzed by the generalized linear mixed model. Results: The deviation gradually increased as the distance from scan origin increased for the IOSs but not for the physical impression. The highest deviation occurred mostly at the apico-coronal axis for the IOSs. The mean deviation of the physical impression (53 ± 2 μm) was not significantly different from the Trios 3 (156 ± 8 μm) and CS 3600 (365 ± 29 μm), but it was significantly lower than the values of Element 1 (531 ± 26 μm), Element 2 (246 ± 11 μm), Emerald (317 ± 13 μm), Omnicam (174 ± 11 μm), Planscan (903 ± 49 μm). Conclusions: The physical impression was superior compared to the IOSs on dentate full-arch of human cadaver. The novel method could reveal the stitching error of IOSs, which may partly be caused by the difficulties in depth measurement.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparing the trueness of seven intraoral scanners and a physical impression on dentate human maxilla by a novel method

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Digital orthodontics is gaining more and more acceptance among clinicians in their everyday practice. It started with the intraoral scanning process for the development of virtual models instead of cast ones [14], and is nowadays extending to other processes such as the virtual design of the orthodontic appliances followed by the 3D printing technology [15]. At first the digital workflow was used for simple orthodontic appliances such as trans-palatal arch, lingual arch or Hyrax expander [16].…”

Section: Discussionmentioning

confidence: 99%

Digital Workflow for 3D Design and Additive Manufacturing of a New Miniscrew-Supported Appliance for Orthodontic Tooth Movement

et al. 2021

View full text Add to dashboard Cite

The introduction of digital workflows and their combination with miniscrew assisted appliances has opened new and enthusiastic perspectives in modern orthodontics. However, in all digital workflows currently in use for orthodontic tooth movement, the miniscrews are inserted first in the maxillary bone, often by means of a surgical guide, and then the appliance is fabricated and secured over the miniscrews with different fixation mechanisms. By doing so, some adaptation problems can be encountered while securing the appliance over the miniscrews, and the chairside time required can therefore be significant. In the present study, we introduce a digital workflow for the design and fabrication of a new appliance, customized on the individual morphology of maxillary bone by using patient Cone Beam Computed Tomography CBCT, for sagittal and vertical orthodontic tooth movement (DIVA, divergent anchors). Differently from the existing protocols, the appliance is cemented first intraorally, serving as a surgical guide for the subsequent insertion of miniscrews. In this way, the adaptation problems are avoided and the chair-side time is reduced.

show abstract

“…Die verschiedenen kommerziell verfügbaren Systeme für das Intraoralscanning basieren auf der Anwendung von optischen Messverfahren [39]. Beispielsweise benutzen die beiden Scanner Cerec BlueCam [40] und Planmeca Emerald [41] Zusammenfassend ist anzumerken, dass die Streifenlichtpro jektion sowie das konfokale Imaging die am häufigsten in Intra oralscannern angewandten Technologien sind, denn diese beiden Prinzipien weisen insgesamt die größten Vorteile auf [48,49].…”

Section: Indirekte Methode Für Die Digitale Modellerstellung -Desktopscanningunclassified

Digitale Kiefermodelle – Erstellung und kieferorthopädisch-diagnostische Anwendungen

Gerhart

Radeke

Elkholy

et al. 2021

Informationen aus Orthodontie & Kieferorthopädie

View full text Add to dashboard Cite

ZusammenfassungDie digitale Kieferorthopädie erfuhr besonders in den letzten Jahren sowohl in der Diagnostik als auch in der Therapie großen Zuspruch. Digitale Kiefermodelle können entweder direkt mittels Einscannen der Gipsmodelle oder indirekt mittels Intraoralscan erstellt werden. Auf längere Sicht setzt sich hier sicherlich das Intraoralscanning durch. Die digitalisierten und gegenseitig registrierten Kiefermodelle können mit ausgereiften Softwaretools mittlerweile sehr genau und ohne zeitlichen Mehraufwand ausgewertet werden. Zudem ergeben sich zahlreiche neue Applikationsmöglichkeiten, wie z. B. die Integration mit 3D-Gesichtsscans für dento-faziale 3D-Analysen. Auch das digitale Setup von Kiefermodellen zur Behandlungssimulationen, z. B. bei der Fragestellung Ex- oder Non-Ex-Therapie oder vor kieferchirurgisch-kieferorthopädisch kombinierter Behandlung, ist ein attraktives Anwendungsfeld. Darüber hinaus ergeben sich durch die Verfügbarkeit von digitalen Kiefermodellen faszinierende therapeutische Anwendungen, z. B. im Bereich des indirekten Bracketings oder der Alignertherapie, die in diesem mehr diagnostisch fokussierten Beitrag jedoch nicht näher thematisiert werden.

show abstract

Generation of 3D digital models of the dental arches using optical scanning techniques

Cited by 13 publications

References 46 publications

Comparing the trueness of seven intraoral scanners and a physical impression on dentate human maxilla by a novel method

Comparing the trueness of seven intraoral scanners and a physical impression on dentate human maxilla by a novel method

Digital Workflow for 3D Design and Additive Manufacturing of a New Miniscrew-Supported Appliance for Orthodontic Tooth Movement

Digitale Kiefermodelle – Erstellung und kieferorthopädisch-diagnostische Anwendungen

Contact Info

Product

Resources

About