In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic Restorations
Statement of the Problem: Controversy exists regarding the effect of porcelain thickness on color of restoration. Purpose: This study sought to assess the effect of thickness of the veneering ceramic on color parameters of zirconia all-ceramic restorations. Materials and Method: This in vitro experi...
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doaj-7ecf8836689a44b583531f13cce80f1d2020-11-24T21:42:14ZengAmber PublicationJournal of Research in Medical and Dental Science2347-25452347-23672018-03-0162586592In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic RestorationsEzzat Allah Jalalian0Arash Zarbakhsh1 Kimia Attar2Hadi Kaseb Ghane3Amir Ali Shirian4Negar Manoochehri5Associated Professor, Department of Prosthodontics, Dental Branch, Islamic Azad University of Medical Sciences, Tehran, IranAssistant Professor, Department of Prosthodontics, Dental Branch, Islamic Azad University of Medical Sciences, Tehran, IranAssistant Professor, Department of Prosthodontics, Dental Branch, Islamic Azad University of Medical Sciences, Tehran, IranAssistant Professor, Department of Prosthodontics, Dental Branch, Islamic Azad University of Medical Sciences, Tehran, IranPostgraduate Student of Prosthodontics, Department of Prosthodontics, Dental Branch, Islamic Azad University of Medical Sciences, Tehran, IranDentist, IranStatement of the Problem: Controversy exists regarding the effect of porcelain thickness on color of restoration. Purpose: This study sought to assess the effect of thickness of the veneering ceramic on color parameters of zirconia all-ceramic restorations. Materials and Method: This in vitro experimental study was conducted on 30 discs measuring 10mm in diameter and 0.5mm in thickness fabricated of A3 shade of ZIRCAD zirconia using computer-aided design/computer aided manufacturing (CAD/CAD) system. Discs were divided into three groups (n=10). Disc-shaped metal molds measuring 10mm in diameter and 1, 1.5 and 2mm in height were used to fabricate IPS e.max veneering ceramic in 1, 1.5 and 2mm thicknesses. After applying porcelain and firing, the color parameters (CIE L*a*b*) were measured using a spectrophotometer in three phases of zirconia core, dentin porcelain and glazing. Color difference (ΔE) was compared among the three groups. Data were analyzed using ANOVA and Tukey’s test. Results: By an increase in the veneering ceramic thickness from 0.5 to 1.5mm, ΔE changed from 10.78 to 13.45 units. The highest ΔE was noted in presence of 1.5mm thickness of dentin porcelain. A significant difference was noted in ΔE among the three groups (p= 0.000); ΔE in presence of 1.5mm thickness of the veneering porcelain was significantly higher than that in the other two groups (p< 0.05). Conclusion: Significant improvement in color occurs by an increase in thickness of the veneering ceramic, and 1.5mm thickness of veneering ceramic is favorable for use in the clinical setting.https://www.jrmds.in/articles/in-vitro-effect-of-thickness-of-veneering-ceramic-on-color-parameters-of-zirconia-allceramic-restorations.pdfZirconium OxideComputer-Aided DesignColor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ezzat Allah Jalalian Arash Zarbakhsh Kimia Attar Hadi Kaseb Ghane Amir Ali Shirian Negar Manoochehri |
spellingShingle |
Ezzat Allah Jalalian Arash Zarbakhsh Kimia Attar Hadi Kaseb Ghane Amir Ali Shirian Negar Manoochehri In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic Restorations Journal of Research in Medical and Dental Science Zirconium Oxide Computer-Aided Design Color |
author_facet |
Ezzat Allah Jalalian Arash Zarbakhsh Kimia Attar Hadi Kaseb Ghane Amir Ali Shirian Negar Manoochehri |
author_sort |
Ezzat Allah Jalalian |
title |
In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic Restorations |
title_short |
In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic Restorations |
title_full |
In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic Restorations |
title_fullStr |
In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic Restorations |
title_full_unstemmed |
In Vitro Effect of Thickness of Veneering Ceramic on Color Parameters of Zirconia All-Ceramic Restorations |
title_sort |
in vitro effect of thickness of veneering ceramic on color parameters of zirconia all-ceramic restorations |
publisher |
Amber Publication |
series |
Journal of Research in Medical and Dental Science |
issn |
2347-2545 2347-2367 |
publishDate |
2018-03-01 |
description |
Statement of the Problem: Controversy exists regarding the effect of porcelain thickness on color of restoration. Purpose: This study sought to assess the effect of thickness of the veneering ceramic on color parameters of zirconia all-ceramic restorations. Materials and Method: This in vitro experimental study was conducted on 30 discs measuring 10mm in diameter and 0.5mm in thickness fabricated of A3 shade of ZIRCAD zirconia using computer-aided design/computer aided manufacturing (CAD/CAD) system. Discs were divided into three groups (n=10). Disc-shaped metal molds measuring 10mm in diameter and 1, 1.5 and 2mm in height were used to fabricate IPS e.max veneering ceramic in 1, 1.5 and 2mm thicknesses. After applying porcelain and firing, the color parameters (CIE L*a*b*) were measured using a spectrophotometer in three phases of zirconia core, dentin porcelain and glazing. Color difference (ΔE) was compared among the three groups. Data were analyzed using ANOVA and Tukey’s test. Results: By an increase in the veneering ceramic thickness from 0.5 to 1.5mm, ΔE changed from 10.78 to 13.45 units. The highest ΔE was noted in presence of 1.5mm thickness of dentin porcelain. A significant difference was noted in ΔE among the three groups (p= 0.000); ΔE in presence of 1.5mm thickness of the veneering porcelain was significantly higher than that in the other two groups (p< 0.05). Conclusion: Significant improvement in color occurs by an increase in thickness of the veneering ceramic, and 1.5mm thickness of veneering ceramic is favorable for use in the clinical setting. |
topic |
Zirconium Oxide Computer-Aided Design Color |
url |
https://www.jrmds.in/articles/in-vitro-effect-of-thickness-of-veneering-ceramic-on-color-parameters-of-zirconia-allceramic-restorations.pdf |
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