Colorimetric analysis of dental porcelains: effects of the background color

This study evaluated how the background (white or gray) affects color parameter measurements and difference calculations (∆Eab ∆E00) of dental ceramics. Disc-shaped feldspathic ceramic specimens were prepared with two shades (enamel dentin) stained in red wine (7-day immersion). A spectrophotometer was used to perform (CIEL*a*b* coordinates) over gray white backgrounds after specimen preparation staining. The calculated CIEDE2000 (ΔE00) CIELAB (ΔEab) formulae. Initial L*a*b* coordinates, ΔE00, ΔEab data analyzed t-tests separately for each shade. White led higher values L* b* coordinates from enamel shade, L*, a*, dentin However, ΔE00 results similar both shades. Therefore, did not affect slightly samples.