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AuthorWense, Cynthia von derdc.contributor.author
Date of accession2016-03-15T10:41:48Zdc.date.accessioned
Available in OPARU since2016-03-15T10:41:48Zdc.date.available
Year of creation2013dc.date.created
AbstractThe aim of this study was to compare the traditional method for measuring mesial-distal tooth widths on plaster casts using a vernier caliper with a newer measuring technique based on virtual 3D models regarding accuracy and speed. Furthermore, the validity of the prediction tables of Berendonk and Moyers was tested. The individual mesial-distal tooth widths were measured on 55 blinded sets of plaster casts and their corresponding digital models, which were obtained by 3D scanning using a white-light scanner (d-Station3D; Breuckmann, D-Meersburg). Three examiners with different degrees of education in orthodontics performed the measurement of the teeth 6-6 in each jaw. Measurements were repeated three times in a randomized sequence using OnyxCeph3TM analysis software (Image Instruments, D-Chemnitz) and a dental vernier caliper. The operator time needed to complete each set of measurements was recorded. The measured values were then held against the prognosis of both Berendonk and Moyers. The Bland-Altman analysis of all single values revealed no statistically significant difference between the caliper-based and the software-based measuring technique. The limits of agreement were found to be within the clinically acceptable range of ±0,5 mm, with a slight underestimation of the tooth widths when measured digitally (=-0,02 mm). The variability of the results was observed to be associated with the qualification degree of the user. Both repeatability and reproducibility were clinically acceptable for the 2 examiners with the higher education level in orthodontics. Altogether, the digital method required less time. The predictions made by using the correlation tables of Berendonk and Moyers lead to an overestimation of the space requirements. The software-based measurement of mesial-distal tooth widths on 3D models can replace the traditional method. Regarding the prediction tables of Berendonk und Moyers, we recommend to search for more accurate options.dc.description.abstract
Languagededc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandarddc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v3dc.rights.uri
KeywordDreidimensionale Bildgebungdc.subject
KeywordModellanalysedc.subject
KeywordOnyxCephdc.subject
Dewey Decimal GroupDDC 610 / Medicine & healthdc.subject.ddc
MeSHImaging , three-dimensionaldc.subject.mesh
MeSHOrthodonticsdc.subject.mesh
MeSHRadiography, dental, digitaldc.subject.mesh
MeSHSoftwaredc.subject.mesh
TitleVergleichbarkeit der Erfassung metrischer Werte an konventionellen Gipsmodellen und 3D-Scansdc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-3498dc.identifier.doi
PPN813459443dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-93097dc.identifier.urn
GNDDimension 3dc.subject.gnd
GNDGipsmodelldc.subject.gnd
GNDKieferorthopädiedc.subject.gnd
GNDOptische Messtechnikdc.subject.gnd
FacultyMedizinische Fakultätuulm.affiliationGeneral
Date of activation2014-12-15T10:56:29Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionW: W-H 13.927uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS ID9309uulm.vtsID
CategoryPublikationenuulm.category
Bibliographyuulmuulm.bibliographie


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