ArticleBMC oral health2025
Effect of different finishing and polishing procedures on color stability of Ormocer- and methacrylate-based composites.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
backgroundThe optical properties of composite restorations are influenced by composite's surface conditions and polishing techniques, which can affect stain resistance. This study examined how surface condition and polishing techniques affect the color stability of two composite restorative materials.
methodsA total of 150 composite discs were divided into 30 experimental groups (n = 5) based on composite material (ormocer-based composite, Admira Fusion, and methacrylate-based composite' Grandio), surface condition (against matrix, air, or glycerin), and polishing technique (No polishing, 1-step, 2-step, abrasive + one-step, and abrasive + two-step). Color measurements were taken using a spectrophotometer before immersion (baseline) and after 3 months of immersion in a coffee solution. Data were analyzed using ANOVA and Tukey HSD test (α = 0.05).
resultComposite type, surface condition, and polishing technique all had a significant effect on ΔE (P < 0.001). Admira Fusion and Grandio exhibited the lowest ΔЕ value (3.26 ± 0.15, 3.43 ± 0.08 respectively) when polished with abrasives and a 2-step technique (P < 0.05). Grandio showed the highest ΔЕ value (19.66 ± 0.37) when light cured in air and without exposure to any polishing technique (P < 0.05).
conclusionThe color stability of composites was enhanced by applying glycerin coatings prior to light curing and polishing.
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