Effect of Different Surface Treatments on Optical Properties of Porcelain Restorations

Purpose: The purpose of the study was to evaluate the effect of different porcelain surface treatments on optical properties of different porcelain systems. Material and methods: Totally 240 metal-based porcelains were made by 3 different porcelain systems with different thicknesses. Different surface treatments as natural glaze (N), glaze (G), porcelain polish (L), porcelain diamond paste (EP), porcelain polish and diamond paste (L)+(EP) were applied on porcelain surfaces. Color values (L*,a*,b*) were determined with a color measurement device. Statistical analyses were performed with ANOVA and Tukey HSD, and Paired Sample t-test (P 0.05). Results: Glaze, porcelain polish, porcelain diamond paste or porcelain polisher and diamond paste; that applied on porcelain surfaces affected the optical properties of porcelains but there were no significant differences were found between them. After surface treatments as the L* value increased, there were no significant differences between a* and b* values. Lightness of low fusing porcelain increased more, when compared with feldspatic porcelains. Conclusion: After porcelain surface treatments color changes was found as clinically imperceptible.