ABSTRACT
The present study was performed to compare the reproducibility of each of the porcelain and composite laminates to the selected shade [A-2]. The effects of the laminate thickness [0.5 mm and 1 mm] and that of the luting resin shades on the final shade of the laminate samples were also investigated. This study was carried out on 84 laminate samples i.e 42 porcelain laminate samples [IPS Corum] and 42 composite laminate samples [Tetric Ceram]. The shade of the laminate materials [porcelain/composite] which was used in fabrication of laminate was A-2. Each laminate sample was square in shape with a side length 10 mm. Half of the laminate samples had 0.5 mm thickness while the other half of the samples had 1 mm thickness. All of the laminate samples were cemented to standardized acrylic substrates. The shade of the substrates was C-4. Cementation of the laminate samples to the substrates was done by using different shades [A-1, A-2, A-3.5] of Aeliteflo and Tetric Flow flowable composites. The color difference between each cemented sample and the A-2 vita lumen shade guide was measured by using a spectro-colorimeter. The porcelain laminate was found to be the most reproducible material to the selected shade, and the statistical analysis revealed that the difference in shade reproducibility was highly significant when compared with composite laminate martial. The laminate samples with 1mm thickness had superior reproducibility than the laminate samples with 0.5 mm thickness. Aeliteflo luting resin was more reproducible to the selected shade than Tetric how luting resin. There was a highly significant relation between the shade of the luting resin and the final shade of laminate