Marginal and Internal Fit of Cobalt-Chromium Fixed Dental Prostheses Generated from Digital and Conventional Impressions
Joint Authors
Eliasson, Alf
Örtorp, Anders
Karlsson, Stig
Skjerven, Henrik
Svanborg, Per
Carlsson, Pablo
Source
International Journal of Dentistry
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-03
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Objectives.
Digital impressions are increasingly used and have the potential to avoid the problem of inaccurate impressions.
Only a few studies to verify the accuracy of digital impressions have been performed.
The purpose of this study was to compare the marginal and internal fit of 3-unit tooth supported fixed dental prostheses (FDPs) fabricated from digital and conventional impressions.
Methods.
Ten FDPs were produced from digital impressions using the iTero system and 10 FDPs were produced using vinyl polysiloxane (VPS) impression material.
A triple-scan protocol and CAD software were used for measuring and calculating discrepancies of the FDPs at 3 standard areas: mean internal discrepancy, absolute marginal gap, and cervical area discrepancy.
The Mann-Whitney U test was used for analyzing the results.
Results.
For conventional and digital impressions, respectively, FDPs had an absolute marginal gap of 147 μm and 142 μm, cervical area discrepancy of 69 μm and 44 μm, and mean internal discrepancy of 117 μm and 93 μm.
The differences were statistically significant in the cervical and internal areas (P<0.001).
Significance.
The results indicated that the digital impression technique is more exact and can generate 3-unit FDPs with a significantly closer fit compared to the VPS technique.
American Psychological Association (APA)
Svanborg, Per& Skjerven, Henrik& Carlsson, Pablo& Eliasson, Alf& Karlsson, Stig& Örtorp, Anders. 2014. Marginal and Internal Fit of Cobalt-Chromium Fixed Dental Prostheses Generated from Digital and Conventional Impressions. International Journal of Dentistry،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-479360
Modern Language Association (MLA)
Svanborg, Per…[et al.]. Marginal and Internal Fit of Cobalt-Chromium Fixed Dental Prostheses Generated from Digital and Conventional Impressions. International Journal of Dentistry No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-479360
American Medical Association (AMA)
Svanborg, Per& Skjerven, Henrik& Carlsson, Pablo& Eliasson, Alf& Karlsson, Stig& Örtorp, Anders. Marginal and Internal Fit of Cobalt-Chromium Fixed Dental Prostheses Generated from Digital and Conventional Impressions. International Journal of Dentistry. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-479360
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479360