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Effect of surface finishing and polishing procedures on color properties and translucency of monolithic zirconia restorations at varying thickness
Author(s) -
Saker Samah,
Özcan Mutlu
Publication year - 2021
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/jerd.12681
Subject(s) - polishing , cubic zirconia , materials science , glazing , glaze , surface finishing , composite material , color difference , ceramic , computer science , filter (signal processing) , computer vision
Objective This study aimed to assess the impact of monolithic zirconia thickness on its color properties after different surface finishing and polishing procedures, and following aging in coffee solution. Materials and methods Two types of monolithic zirconia brands [Prettau Anterior (PA) and DD Cubex2 (DDC)] with three different thicknesses: 0.5, 1, and 1.5, and 10 mm diameter were tested. The color properties were evaluated after various surface finishing procedures (glazing, adjusting with burs + glaze, polishing, adjusting with burs + polishing) and after 5,000 cycles in a coffee solution were evaluated. The differences in color (ΔE) and translucency, were calculated and statistically analyzed by three‐way ANOVA and pairwise comparison (α = 0.05). Results The brand, material thickness, and surface finishing protocol before and after coffee thermocycling had significant effect on color variations ( p < 0.001). For translucency, 3‐way ANOVA revealed a significant interaction between the material thickness and surface finishing protocol following aging in coffee solution ( p < 0.001), however no significant interaction was observed following the surface finishing protocols ( p = 0.247). Conclusions The optical properties of monolithic zirconia ceramics can be influenced by the material brand, material thickness and the procedure of surface finishing and polishing. Clinical significance Clinicians should take into consideration the potential change of the color properties of monolithic zirconia restorations following both contouring and occlusal adjustment procedures and coffee intake.