Digital 3D image of bimaxillary casts connected by a vestibular scan

Wriedt, Susanne; Schmidtmann, Irene; Niemann, M.; Wehrbein, Heinrich

doi:10.1007/s00056-013-0152-1

Cited by 7 publications

(7 citation statements)

References 34 publications

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“…A group with 5 test samples would yield 10 superimposition combinations. Apart from SIR, the precision of the other two groups were comparable to the mean deviation of 37 ± 28 μm seen Wriedt et al's study . The poorer level of precision seen in SIR could be attributed to variations in scanning and meshing algorithms.…”

Section: Discussionsupporting

confidence: 70%

“…Most studies to date have used various 3D analyzing software to superimpose the images of the virtual models and calculate the deviations. Wriedt et al, investigating the precision of aligning virtual casts with the vestibular scanning technique using a photo‐optical scanner, Activity 102 (Smart Optics, Bochum, Germany), found that the greatest deviations between the virtually articulated models averaged 37 ± 28 μm. Solaberrieta et al validated the articulation of the mandibular cast to the maxillary cast on a virtual articulator using three reverse engineering software programs (GOM Inspect, Rapidform, Geomagic) and found that the virtual articulation process resulted in a mean deviation of 69 μm.…”

Section: Discussionmentioning

confidence: 99%

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Three‐Dimensional Static Articulation Accuracy of Virtual Models – Part I: System Trueness and Precision

Yee

Esguerra²,

Chew

et al. 2017

Journal of Prosthodontics

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Section: Discussionsupporting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Three‐Dimensional Static Articulation Accuracy of Virtual Models – Part I: System Trueness and Precision

Yee

Esguerra²,

Chew

et al. 2017

Journal of Prosthodontics

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show abstract

“…Others have evaluated deviations in virtual articulation using 2D or 3D analysis software to superimpose and calculate distortions between images of virtual models but only at a static relationship in maximum intercuspation and without movements. These studies demonstrated that accuracy between mechanical and virtual models was comparable . Common to all of these studies is testing the static relationship of maxillary and mandibular teeth/models in the static maximum intercuspation position.…”

mentioning

confidence: 91%

Accuracy of Dynamic Virtual Articulation: Trueness and Precision

Hsu

Driscoll

Romberg

et al. 2019

Journal of Prosthodontics

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Purpose To study the effects of altering condylar settings and pin openings on the trueness and precision of virtual articulators vs. mechanical articulators. Materials and Methods Maxillary and mandibular typodonts with fiducial markers were mounted on a mechanical Artex‐CR articulator, and the mandibular teeth were prepared to allow guidance solely by the posterior determinants of the articulator and the incisal table. The relationship of the mounted typodonts was preserved digitally by scanning using manufacturer transfer plate adaptors. On the mechanical articulator, pattern resin was allowed to set between the maxillary and mandibular occlusal surfaces (area #25‐30) at the endpoints of dynamic movements at 3 condylar inclinations (SCI): 10°, 30°, and 45°, n = 12/inclination, or at 3 incisal pin openings (2, 5, and 10 mm, n = 12/opening). All other articulator settings were kept constant. Resin specimens attached to the typodonts were scanned within 5 minutes of setting, then removed, and the articulated typodonts rescanned. Fixed dental prostheses (FDPs) #25‐30 were designed on the virtual articulator using identical parameters to the mechanical articulator. Dynamic virtual movements were used to sculpt the design, and a file of the design was saved. The files of both types of samples were aligned and overlaid. Interocclusal separation was measured in triplicate at the indentation created by the mesiolabioincisal point angle on the incisal edge of #8 and the mesiobucco‐occlusal point angle of #3. Trueness and precision of both types of articulators were calculated and compared using one‐way ANOVA, followed by the Tukey HSD test (α = 0.05). Results There was no statistically significant difference at altered pin openings in either trueness (F = 0.202, p = 0.37) or precision (F = 3.134, p = 0.09) for the majority of measurements. The only significant difference was in the precision between the 2 types of articulators at 5 mm incisal opening, and only at the anterior measurement point (F = 15.134, p = 0.0008); however, these differences were less than 100 μm. When the SCI was altered, there was no statistically significant difference (F = 3.624, p > 0.05) between the virtual and mechanical articulators in trueness for 5 of the 6 measurements obtained (F = 3.624, p = 0.07) or for all of the precision measurements (F = 3.529, p = 0.07). The one trueness measurement that was significantly different (F = 9.237, p = 0.006) occured at SCI of 10°, and it was less than 100 µm. Conclusions Dynamic movements on the virtual articulator were shown to be as true and precise as to the mechanical articulator. When there were deviations, these deviations were less than 100 µm and thus, these deviations may not be clinically relevant.

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“…Messungen sind ebenso akkurat und reproduzierbar wie am Gipsmodell [7,8]. Die Zuordnung von Ober-zu Unterkiefer mittels Vestibulärscan bietet auch eine ausreichende Genauigkeit [9]. Eine Überführung von digitalen, 3-dimensionalen Modellen in haptische Modelle istmittels RP-Verfahren (RP: Rapid Prototyping) mit ausreichender Präzision möglich [13,14].…”

Section: Besonderheiten Der Messenden Diagnostik Mit Computerunterstüunclassified

Digitale Kieferorthopädie

Krey

Orlob

Gorynia

et al. 2016

Inf Orthod Kieferorthop

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Digital 3D image of bimaxillary casts connected by a vestibular scan

Abstract: The presented approach of generating bimaxillary study models in a virtual environment with the help of vestibular scans meets the precision requirements for use in orthodontics and can be employed in further studies.

Cited by 7 publications

References 34 publications

Three‐Dimensional Static Articulation Accuracy of Virtual Models – Part I: System Trueness and Precision

Three‐Dimensional Static Articulation Accuracy of Virtual Models – Part I: System Trueness and Precision

Accuracy of Dynamic Virtual Articulation: Trueness and Precision

Digitale Kieferorthopädie

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