Masking discolored substrates with lithium disilicate veneers and resin cements: An in vitro quantitative analysis

This study provides clinically applicable guidance for managing the often-unpredictable esthetic outcomes in veneer cases involving tooth discoloration. By quantifying the influence of each variable through dominance analysis within a regression model, the underlying tooth shade was found to contribute approximately 87.82 % to the explained variance in color outcome-emphasizing the importance of substrate modification as a key step toward achieving consistent and natural-looking results. This statistical contribution should be interpreted within the context of the model and not as a clinical absolute.