Objective: This study aimed to evaluate the effects of thickness changes on translucency and masking ability of a recently developed single shade resin composite material with enhanced opacity comparing it with a traditional opaque-shade one.
Material and methods: Two brands of composite resins; Omnichroma blocker (OCB) and G-aenial Anterior (GA) in opaque A2 (OA2) shade were selected to enroll the study. Color coordinates of each composite were determined at 0.5, 1, and 1.5 mm thicknesses (n=10/thickness) on four different backgrounds (white baking, black baking, C4 shade porcelain baking and the backing of material itself) by using a spectrophotometer to determine the translucency parameter (TP) and masking ability of the study materials. Data were statistically analyzed using One-way ANOVA, T-test and Tukey HSD as a post hoc for multiple comparisons (P < .05).
Results: TP and ΔE* values obtained between specimens on different backgrounds decreased as thickness increased. For both materials, a black backing was masked by thicknesses of 1.5 mm, whereas a C4 porcelain backing was masked by all resin thicknesses.
Conclusion: In relatively thin thicknesses (≤1mm), both composites could not mask the black background color. On the other hand, they could mask C4 porcelain background color at all thicknesses.
Ghorab SM, Atya HA. Effect of Thickness on Translucency and Masking Ability of a Recently Developed Single-Shade Resin Composite with Enhanced Opacity: An In Vitro Comparative Study. Future Dental Journal. 2022; 7(2):130-135. doi: https://doi.org/10.54623/fdj.70211.