Shade Variation Influences Color Mismatch in CAD-CAM Lithium Disilicate Crowns Relative to Corresponding Shade Guide.

Key Points

• The research aims to examine how shade variation in CAD-CAM lithium disilicate crowns affects color mismatch.
• Analyzed color mismatch using CIE values and nominal shades.
• Measured ΔE values for different crown shades.
• Utilized a spectrophotometer to assess color accuracy.
• Highest ΔE values were found in shade C3 crowns.
• Lowest trueness recorded for shades B3 and C3.
• Inconsistency detected between CIE values and nominal shades.