Acta Scientific Dental Sciences

Research ArticleVolume 2 Issue 7

The Effect of Veneer Thickness on Color Match of Discolored Teeth

Hebatullah D Hendawy1, Rowan A Gaber1, Nourhan R Helal1 and Moustafa N Aboushelib2*

1Predoctoral Student, Biomaterials Laboratory, Faculty of Dentistry, Alexandria University, Azarita, Egypt
2Professor, Biomaterials Laboratory, Faculty of Dentistry, Alexandria University, Egypt

*Corresponding Author: Moustafa N Aboushelib, Professor of Biomaterials, Biomaterials Department, Faculty of Dentistry, Alexandria University, Azarita, Alexandria, Egypt.

Received: April 21, 2018; Published: June 27, 2018

Citation: Moustafa N Aboushelib., et al. “The Effect of Veneer Thickness on Color Match of Discolored Teeth”. Acta Scientific Dental Sciences 2.7 (2018).


Background: All-ceramic restorations are sometimes used to mask discolored teeth or restorative materials. A dark background may affect the final color of the restoration.

Aim: The aim of this study was to evaluate the required thickness of a glass ceramic restoration in order to mask a dark background and to study the effect of presence of a supporting framework.

Methodology: Lithium disilicate discs were prepared in different thicknesses (0.5, 1 and 1.5 mm) by cutting and milling a CAD-CAM block. 0.5 mm thick white zirconia discs were prepared in the same manner. Nine shades of discolored dentine-like polymer discs mimicking all possible background colors were prepared and used as took like replica. All color of all prepared ceramic discs was measured using a dental spectrophotometer the color was measured again when the discs were placed against the nine discolored dentine like background. Measurements were made with and without the zirconia discs (anatomical versus layered assembly). Delta E values were measured for all combinations.

Results: Discolored backgrounds influenced all combinations of ceramics except for the 1.5 mm thick low opacity glass ceramic discs and the 0.5 mm zirconia veneered with 1 mm glass ceramic discs.

Conclusion: Masking discolored backgrounds requires using thicker veneer sections in order to achieve the required color match.

Keywords: Veneer Thickness; Color Match; Ceramic Restorations; Zirconia

Copyright: © 2018 Moustafa N Aboushelib ., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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