Influence of Material Selection on the Marginal Accuracy of CADCAM-Fabricated Metal- and All-Ceramic Single Crown Copings
Joint Authors
Rödiger, Matthias
Schneider, Lea
Rinke, Sven
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-22
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
This study evaluated the marginal accuracy of CAD/CAM-fabricated crown copings from four different materials within the same processing route.
Twenty stone replicas of a metallic master die (prepared upper premolar) were scanned and divided into two groups.
Group 1 (n=10) was used for a pilot test to determine the design parameters for best marginal accuracy.
Group 2 (n=10) was used to fabricate 10 specimens from the following materials with one identical CAD/CAM system (GAMMA 202, Wissner GmbH, Goettingen, Germany): A = commercially pure (cp) titanium, B = cobalt-chromium alloy, C = yttria-stabilized zirconia (YSZ), and D = leucite-reinforced glass-ceramics.
Copings from group 2 were evaluated for the mean marginal gap size (MeanMG) and average maximum marginal gap size (AMaxMG) with a light microscope in the “as-machined” state.
The effect of the material on the marginal accuracy was analyzed by multiple pairwise comparisons (Mann–Whitney, U-test, α=0.05, adjusted by Bonferroni-Holmes method).
MeanMG values were as follows: A: 46.92 ± 23.12 μm, B: 48.37 ± 29.72 μm, C: 68.25 ± 28.54 μm, and D: 58.73 ± 21.15 μm.
The differences in the MeanMG values proved to be significant for groups A/C (p=0.0024), A/D (p=0.008), and B/C (p=0.0332).
AMaxMG values (A: 91.54 ± 23.39 μm, B: 96.86 ± 24.19 μm, C: 120.66 ± 32.75 μm, and D: 100.22 ± 10.83 μm) revealed no significant differences.
The material had a significant impact on the marginal accuracy of CAD/CAM-fabricated copings.
American Psychological Association (APA)
Rödiger, Matthias& Schneider, Lea& Rinke, Sven. 2018. Influence of Material Selection on the Marginal Accuracy of CADCAM-Fabricated Metal- and All-Ceramic Single Crown Copings. BioMed Research International،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1124911
Modern Language Association (MLA)
Rödiger, Matthias…[et al.]. Influence of Material Selection on the Marginal Accuracy of CADCAM-Fabricated Metal- and All-Ceramic Single Crown Copings. BioMed Research International No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1124911
American Medical Association (AMA)
Rödiger, Matthias& Schneider, Lea& Rinke, Sven. Influence of Material Selection on the Marginal Accuracy of CADCAM-Fabricated Metal- and All-Ceramic Single Crown Copings. BioMed Research International. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1124911
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124911