The effect of enamel porcelain thickness on color and the ability of a shade guide to prescribe chroma

Dental Materials : Official Publication of the Academy of Dental Materials
F D JaradM D Russell

Abstract

To test the null hypothesis that there is no color change when enamel porcelain thickness is changed and to evaluate the ability of a shade guide to prescribe chroma. Three shades (3M1, 3M2 and 3M3) were selected from a Vitapan 3D master shade guide. Five disk specimens were prepared for each shade, consisting of three layers (opacious dentin, dentin and enamel) at thicknesses of 0.6, 0.8 and 0.6mm, respectively. The color of each disk was measured using a spectrophotometer. Enamel porcelain was reduced in thickness to 0.3mm and porcelain disks were remeasured. Reducing the enamel thickness of porcelain disk specimens significantly increased L) (p<0.05), b*, metric chroma and hue angle (p<0.001). For the three shades studied (3M1, 3M2 and 3M3) L* values were not significantly different (p>0.05) and chroma increased for 3M1 with the lowest chroma to 3M3 with the highest chroma, which is in line with the shade guide specifications. Although statistically significant (p<0.001) changes in hue angle between the three shades were small (less than 3 degrees overall). The difference in chroma between the three shades 3M1, 3M2 and 3M3 was greatest for the thin enamel layer than the thick enamel layer. A change in enamel thickness from 0...Continue Reading

References

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Citations

Nov 6, 2013·The Journal of Prosthetic Dentistry·Gulden SinmazisikBilge Tarcin
Oct 31, 2013·The Journal of Prosthetic Dentistry·Eva NiuR Duane Douglas
Sep 6, 2011·The Journal of Prosthetic Dentistry·Shereen S AzerWilliam M Johnston
Apr 5, 2011·The Journal of Prosthetic Dentistry·Hui WangLuo Zhenhua
Dec 3, 2010·Dental Materials : Official Publication of the Academy of Dental Materials·Alessandro VichiMarco Ferrari
Jul 14, 2010·Journal of Dentistry·Stephen J ChuRade D Paravina
Apr 27, 2010·Dental Materials : Official Publication of the Academy of Dental Materials·Gabriele CorciolaniMarco Ferrari
Jul 1, 2008·The Journal of Prosthetic Dentistry·Jin-Soo Ahn, Yong-Keun Lee
Jun 16, 2016·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Salma Ahmed Bahannan, Mohamed Abdelmageed Awad
Sep 30, 2016·The Journal of Prosthetic Dentistry·Faruk EmirCumhur Sipahi
Mar 6, 2018·The Journal of Advanced Prosthodontics·Ferhan EgilmezLippo Veli Juhana Lassila
Jan 10, 2018·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Farhad Tabatabaian
Apr 25, 2015·The Journal of Contemporary Dental Practice·Syed Rashid Habib, Ibraheem F Al Shiddi
Jul 14, 2021·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Binting Xu

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