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Effect of Thickness on Translucency and Masking Ability of a Effect of Thickness on Translucency and Masking Ability of a Recently Developed Single-Shade Resin Composite with Recently Developed Single-Shade Resin Composite with Enhanced Opacity: An In Vitro Comparative Study
Author(s) -
sayed ghorab,
hagag atya
Publication year - 2021
Publication title -
future dental journal/future dental journal
Language(s) - English
Resource type - Journals
eISSN - 2314-7199
pISSN - 2314-7180
DOI - 10.54623/fdj.70211
Subject(s) - masking (illustration) , opacity , materials science , composite material , composite number , resin composite , post hoc , optics , dentistry , medicine , art , physics , visual arts
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 1.5mm 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

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