Influence of Incremental Thickness of Opaque and Dentin Porcelain for Masking Effect on the Metal Base Color of Ceramometal Restoration

The purpose of this study was to examine the influence of various thicknesses of opaque and dentin porcelain on the color of ceramometal restorations. A spectrophotometer was used to measure the color of the specimens and the color differences were calculated to determine the masking effect on the m...

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Veröffentlicht in:Nihon Hotetsu Shika Gakkai Zasshi 1997/04/01, Vol.41(2), pp.266-277
Hauptverfasser: Yamase, Masaru, Shinya, Akiyoshi, Yokozuka, Shigeo
Format: Artikel
Sprache:eng ; jpn
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Zusammenfassung:The purpose of this study was to examine the influence of various thicknesses of opaque and dentin porcelain on the color of ceramometal restorations. A spectrophotometer was used to measure the color of the specimens and the color differences were calculated to determine the masking effect on the metal base color. The masking effect of the opaque porcelain (Vita shade A 1) fired on seven commercial ceramic alloys was different for each alloy. 86.5%-gold-content alloy specimens with 0.3-mm thickness of opaque porcelain demonstrated the maximum masking effect of the opaque single-layer. The masking effect of the opaque-dentin double-layer specimens was different for thickness and shade of porcelain. Palladium-silver alloy specimens with 0.2-mm thickness of opaque porcelain and 1.2-mm thickness of dentin porcelain demonstrated the maximum masking effect of double-layer of shade A 1. 52.5%-gold-content alloy specimens with 0.2-mm thickness of opaque porcelain and 1.2-mm thickness of dentin porcelain demonstrated the maximum masking effect of double-layer of shade C4.
ISSN:0389-5386
1883-177X
DOI:10.2186/jjps.41.266