| Orthodontic study cast analysis--reproducibility of recordings and agreement between conventional and 3D virtual measurements. | |
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MedLine Citation:
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PMID: 19526268 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Digital imaging of dental casts has become an alternative to conventional cast analysis in orthodontic treatment planning. The reproducibility of angular measurements made on virtual digital models has not as yet been evaluated. In order to study reproducibility for and agreement between a conventional analysis technique and virtual 3D imaging, 20 dental casts from subjects in the early mixed dentition, were measured twice with each technique by two orthodontists. Variables of interest were incisor rotation, angulation and irregularity, arch width, arch circumference, overjet, and overbite. Standard deviation (Dahlberg 1940) and coefficient of variation were used for evaluation of reproducibility. Mean differences between methods and examiners, correlation between mean differences and mean levels and 95% limits of agreement were used for describing systematic errors. The conventional technique showed less intraexaminer variation for angular variables than the 3D imaging method. Linear variables, with the exception of overbite, showed no clear trend as regards differences in reproducibility between the two methods. In general, examiner 1 showed less intraexaminer variation than examiner 2. The mean differences between the two methods expressed higher values for assessment of rotations with the O3DM method. Both angular and linear variables exhibited poor 95% limits of agreement. The conventional technique showed better overall reproducibility and thus appears to be more suitable for scientific work. However, the reproducibility attained by O3DM is clearly acceptable for clinical use. The two methods should not be used interchangeably. |
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Authors:
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Anders P G Sjögren; Jan E Lindgren; Jan A V Huggare |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2009-06-13 |
Journal Detail:
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Title: Journal of digital imaging Volume: 23 ISSN: 1618-727X ISO Abbreviation: J Digit Imaging Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-05 Completed Date: 2010-10-19 Revised Date: 2013-03-14 |
Medline Journal Info:
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Nlm Unique ID: 9100529 Medline TA: J Digit Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 482-92 Citation Subset: IM |
Affiliation:
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Department of Orthodontics, Postgraduate Dental Education Center, P.O. Box 1126, SE-701 11, Orebro, Sweden. anders.sjogren@orebroll.se |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Dental Arch
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pathology Dental Casting Technique* Dental Impression Technique Dental Models Female Humans Image Interpretation, Computer-Assisted* Imaging, Three-Dimensional / methods* Male Malocclusion / diagnosis Observer Variation Odontometry / methods Prospective Studies Reproducibility of Results User-Computer Interface* |
| Comments/Corrections | |
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