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Colorimetric study about the stratification's effect on colour perception of resin composites
G R M La Rosa1, S Pasquale2, E Pedullà3
1Department of General Surgery and Surgical-Medical Specialties, University of Catania, Via Plebiscito 628, 95124, Catania, Italy. g_larosa92@live.it.
Odontology
|October 31, 2019
Summary
The layering order of resin composite materials significantly impacts their final appearance. Estelite Asteria demonstrated greater adaptability to variations in dentin and enamel layer thickness compared to other tested composites.
Area of Science:
- Dental Materials Science
- Aesthetic Dentistry
- Biomaterials
Background:
- The stratification of resin composites, mimicking natural tooth layers (dentin and enamel), is crucial for achieving lifelike aesthetics.
- Understanding how different layering orders and thicknesses affect the final appearance is essential for predictable clinical outcomes.
Purpose of the Study:
- To evaluate the influence of varying dentin (D) and enamel (E) layer orders on the stratification appearance of three different resin composites.
- To determine which composite material exhibits greater tolerance to variations in layering for improved aesthetic predictability.
Main Methods:
- 144 composite samples (Clearfil Majesty ES-2 Premium, Brilliant EverGlow, Estelite Asteria) were prepared in 12 configurations each, with Enamel-Dentin-Dentin-Enamel (EDDE) as the target.
- Color measurements were taken using a spectrophotometer, analyzing CIE L*a*b* coordinates and calculating color difference ([Formula: see text]).
- Statistical analysis included two-way ANOVA and Tukey post hoc tests to assess significance (P < 0.05).
Main Results:
- Clearfil Majesty ES-2 Premium and Brilliant EverGlow showed unacceptable color differences ([Formula: see text] > 3.3) in six configurations compared to EDDE, influenced by b* and L* coordinates.
- Estelite Asteria exhibited acceptable color differences in most configurations, with only two exceeding [Formula: see text] > 3.3, primarily influenced by the L* coordinate.
- Enamel-Dentin-Dentin-Enamel (EDED) and Enamel-Dentin-Dentin-Dentin (EDDD) configurations showed minimal visual differences ([Formula: see text] < 1.1) for Brilliant EverGlow and Estelite Asteria, respectively.
Conclusions:
- Brilliant EverGlow and Clearfil Majesty ES-2 Premium are more sensitive to the order and thickness of stratification, suggesting suitability for complex aesthetic cases where precise layering is possible.
- Estelite Asteria demonstrates superior adaptability to variations in dentin and enamel layer thickness, making it a versatile choice for diverse clinical situations.
- The study highlights the importance of material selection based on layering technique for achieving optimal aesthetic results in dental restorations.
