The results of mean Δb* between materials before toothbrushing (F = 167.7, p < 0.001) and after toothbrushing (F = 23.45, p < 0.001) were found highly significant.
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The Toothbrushing Effects on Surface Properties and Color Stability of CAD/CAM and Pressable Ceramic Fixed Restorations-An In Vitro Study.
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