"Estudo espectrofotométrico comparativo da estabilidade de cor de três porcelanas dentais após consecutivas queimas" / Comparative spectrophotometric study of the color stability of three dental porcelains after repeated firings

AUTOR(ES)

Marcelo Weber

DATA DE PUBLICAÇÃO

2006

RESUMO

The purpose of this investigation was to quantify in CIE FE units the differences in color produced by multiple firing of three allceramic systems. For this study 30 samples were fabricated of 3 brands: AllCeram, Noritake Cerabien CZR and Vita VM7. A spectrophotometer was used for reflectance measurement of color after 1 firing, 3 firings, 5 firings and 10 firings. The results were converted in CIELAB units. Color differences, FE, were calculated in the CIE color space. Color differences as a result of multiple firings depended on the number of firings and the brand tested.

ASSUNTO(S)

dental porcelain estabilidade de cor spectrophotometric study estudo espectrofotométrico porcelana dental color stability

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