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OBJECTIVE: The aim of this in vitro study was to evaluate the effects of substrate colors, different levels of ceramic thickness and translucency, and cement shades on the color difference from a reference color of lithium-disilicate crowns. MATERIALS AND METHODS: (CIEDE2000, according to the CIE latest standard) calculated. RESULTS: of the crowns. The weakest effect was exerted by the try-in paste. CONCLUSIONS: All examined parameters influenced the final color of e.max CAD lithium-disilicate ceramic crowns. CLINICAL SIGNIFICANCE: Matching the shade of ceramic crowns to the natural tooth color is a great challenge in dentistry. To meet patients' increasing esthetical expectations, CAD/CAM methods are very popular for full-ceramic crowns. However, several factors such as the shade of the abutment, luting cement color, ceramic thickness, and translucency may influence the final color. Our objective was to measure the optical effect of these factors on the final shade of CAD/CAM lithium-disilicate ceramic crowns.
Czigola et al. (Mon,) studied this question.