Evaluation of Color-matching Ability of a Structural Colored Resin Composite

Area of Science:

• Dental Materials Science
• Esthetic Dentistry
• Color Science in Restorations

Background:

• Accurate color matching is crucial for successful esthetic dental restorations.
• Traditional resin composites rely on pigments, which can limit shade matching capabilities.
• Structural colored materials offer a novel approach to achieving desired optical properties.

Purpose of the Study:

• To evaluate the color-matching ability of a structural colored resin composite (Omnichroma [OMC]).
• To compare OMC's performance against conventional pigmented resin composites (Estelite ∑ Quick [ELQ] and Filtek Supreme Ultra [FSU]).

Main Methods:

• Three resin composites (OMC, ELQ, FSU) were fabricated into specimens.
• Optical characteristics (L*, a*, b* values) were measured using a spectrophotometer under varying background colors and thicknesses.
• Statistical analysis (ANOVA, Tukey tests) was performed to compare color differences.

Main Results:

• OMC exhibited consistent spectral reflectance across different backgrounds and thicknesses.
• Pigmented composites (ELQ, FSU) showed greater variability in color values influenced by background color and cavity depth.
• OMC demonstrated superior color compatibility compared to ELQ and FSU, particularly in simulated cavity depths.

Conclusions:

• Structural colored resin composite OMC offers excellent color matching, simplifying shade selection and improving esthetic outcomes.
• OMC reduces color differences, enhancing the appearance of dental restorations.
• Conventional pigmented composites showed limitations in color matching, especially in deeper cavities.