Effect of the Thickness on Color of Porcelain Laminate Veneer
LU Zhi-yue
ZHANG Fei-min
YIN Xin-min
Abstract：Objective:To evaluate the color change of the two-layer porcelain laminate veneerafter adding veneering porcelain of different thickness to the 0. 2 mm thick aluminum oxide. Meth-ods: Ten aluminum oxide disks were randomized into 2 groups. Each of five disks was veneered with Vi-ta Lumin Shade B4 porcelain of thickness of 0. 4 mm and 0. 6 mm respectively. The L* a* b* color no-tations of the substrate covered with non-veneered disks and 2 thickness porcelain veneered disks weremeasured separately and the color differences ( △E) were calculated. Results:Statistically significantdifferences in color coordinates of dark substrates were recorded after the substrate was covered by analuminum oxide disk and also after the addition of veneering porcelain to the aluminum oxide disks ingroup 1 (P=0. 000 2) and group 2(P=0. 007 5) and between 2 groups (P=0. 000 1). Con-clusion:The ability of masking underlying discoloration was increased and shifted to gray when thethickness of veneering porcelain increased.
Keywords：porcelain laminate veneerthicknesscolor
Publication Date：2003-03-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 74-77,86 )