Spectrophotometric analysis of a nongreening, metal-fusing porcelain.
Spectrometric analysis has been used previously to examine color differences among various porcelains and metal ceramic systems. This study determined whether nongreening porcelain of a single shade fused to high-gold and palladium-silver alloys results in the same final color. Both conventional (VMK-68) and nongreening (VMK-68N) porcelains were fused to metal coupons of high gold (Will-Ceram Y) and palladium-silver (Will-Ceram W-1) to make up four groups. CIELAB colorimetric data were collected at each of seven fabrication steps to define color differences between steps for each alloy-porcelain group as well as between groups at each step. For the shade tested, perceptible color differences between high-gold/conventional porcelain and palladium-silver/nongreening porcelain coupons did not support manufacturers' claims.
Brewer
J D
JD
Department of Fixed Prosthodontics, State University of New York, Buffalo, School of Dental Medicine.
Glennon
J S
JS
Garlapo
D A
DA
D000704:Analysis of Variance; D003116:Color; D003124:Colorimetry / Q000379:methods; D003722:Dental Alloys / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry*; D006047:Gold Alloys / Q000737:chemistry; D010165:Palladium / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013053:Spectrophotometry; D013499:Surface Properties
D003722:Dental Alloys; D006047:Gold Alloys; D003776:Dental Porcelain; D012834:Silver; D010165:Palladium