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Effects of Different Thickness Combinations of Core and Veneer Ceramics on Optical Properties of CAD-CAM Glass-Ceramics
Joint Authors
Kang, Wol
Park, Jong-Kyoung
Kim, Woong-Chul
Kim, Hae-Young
Kim, Ji-Hwan
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-03-04
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The goal of this study was to evaluate the effects of different core and veneer thicknesses on the translucency (T%), average light transmittance (T), translucency parameter (TP), contrast ratio (CR), and spectral reflectance (R) of glass-ceramics using a computer-aided design/computer-aided manufacturing (CAD-CAM) process.
In all, 42 specimens (11mm × 11mm) were prepared and divided into six groups (n = 7 for each group).
Core materials (IPS e.max CAD; IPS Empress CAD, LT A2 shade) of different thicknesses (0.8, 1.0, and 1.2mm) were fabricated.
Each veneer material (thicknesses of 0.7, 0.5, and 0.3mm) was combined with its compatible core ceramic.
Each core material was overlapped with its corresponding veneer material to obtain a 1.5-mm thickness by using three different combinations: (0.8+0.7), (1.0+0.5), and (1.2+0.3) mm.
A spectrophotometer and color data software were used to measure the T%, T, TP, CR, and R values of each ceramic.
The results were statistically analyzed using two-way analysis of variables (ANOVA) and regression analysis (p<0.05).
Two-way ANOVA revealed that T%, T, TP, and CR were significantly influenced by the different thicknesses of the core-veneer combinations (p<0.001).
At a certain thickness, as the veneer thickness increased and core thickness decreased, T and T% all increased.
Regression analysis of the ceramic materials indicated a reduction in T and T% for certain core-veneer combinations.
Analysis also revealed that T% and T were all affected by different core-veneer combinations.
The T% value was 74.31 for the EM group and 72.81 for the EP group when the thickness of the core was 1.2 mm and the veneer was 0.3 mm.
The R value of EM2 was lower than EM1 and EM3.
In conclusion, the optical properties were influenced by different core-veneer combinations.
American Psychological Association (APA)
Kang, Wol& Park, Jong-Kyoung& Kim, Woong-Chul& Kim, Hae-Young& Kim, Ji-Hwan. 2019. Effects of Different Thickness Combinations of Core and Veneer Ceramics on Optical Properties of CAD-CAM Glass-Ceramics. BioMed Research International،Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1126285
Modern Language Association (MLA)
Kang, Wol…[et al.]. Effects of Different Thickness Combinations of Core and Veneer Ceramics on Optical Properties of CAD-CAM Glass-Ceramics. BioMed Research International No. 2019 (2019), pp.1-6.
https://search.emarefa.net/detail/BIM-1126285
American Medical Association (AMA)
Kang, Wol& Park, Jong-Kyoung& Kim, Woong-Chul& Kim, Hae-Young& Kim, Ji-Hwan. Effects of Different Thickness Combinations of Core and Veneer Ceramics on Optical Properties of CAD-CAM Glass-Ceramics. BioMed Research International. 2019. Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1126285
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1126285