Analysis of the color matching of universal resin composites in anterior restorations

Abstract

Objective: To evaluate color matching of universal composite restorations performed in anterior teeth using two evaluation methods. Materials and Methods: Sixty class III preparations were made on denture central incisors with different shades (A1-A3) and restored with multishade (Tetric Evoceram, Filtek Universal, and TPH Spectra Universal) and single-shade (Omnichroma) universal composites (n = 5). For photographic analysis, a digital photograph of each specimen was taken under standardized setup. Color measurements were taken in the center of the restoration, and in the tooth surface 1.0 mm adjacent from the tooth/restoration margin. CIELab coordinates were recorded and color difference analysis (ΔE) was made using the CIEDE-2000 formula. For visual analysis, calibrated observers performed visual scoring of color matching and differences were graded as 0:excellent match; 1:very good match; 2:not so good match; 3:obvious mismatch; 4:huge mismatch. All data were statistically analyzed using a linear mixed model analysis with a confidence interval of 95%. Results: For photographic analysis, Omnichroma showed the highest ΔE compared to the other composites for all shades (P < .05), without difference among experimental groups regarding tooth shade. For visual analysis, Omnichroma showed the highest scores (P < .05) for all teeth shades, without differences between the other groups. Furthermore, there were no differences between visual scores for different shades of a same resin composite group. Conclusions: Multishade universal composites presented higher color matching than the single shade universal composite. There were no differences of color matching for different tooth shades for all composites.

The effect of refractive index of fillers and polymer matrix on translucency and color matching of dental resin composite

“…Under indoor light source with neutral light-gray walls and floor and using a 0°/45° viewing geometry, the evaluators performed blind visual evaluations (viewing distance ≈ 30 cm) of all restorations in a random order. The color differences between each crown and restoration were graded from 0 to 4, using the scale based on previous studies [ 5 , 15 ] where level ‘0’ means excellent match; 1, very good match; 2, not so good match (border zone mismatch); 3, obvious mismatch and 4, huge (obvious) mismatch.…”

Adhesive dentistry: Current concepts and clinical considerations

“…Regarding composite translucency, Essentia Universal (GC Europe), Filtek Universal (3M Oral Care), Omnichroma (Tokuyama Dental America, Inc.), SimpliShade Universal Composite (Kerr Corp.), and TPH Spectra ST (Dentsply Sirona) are available in one translucency rather than multiple enamel, dentin and body shades that have been used to mimic the optical properties of different areas of the tooth. This feature makes universal composites user‐friendlier compared to other composites that rely on the multilayer technique for extensive anterior restorations, which has been used for over 20 years 157,158 . Other universal composites still carry different composite resin translucencies.…”

Investigation of Single Shade Composite Resin Surface Roughness and Color Stability

“…3 Recently, single-shade composite resin, which can be used for all tooth shades, has been introduced to the dentist's use. 4,5 The biggest advantage of the one shade composite resin system is that it allows restoration appropriate with the tooth color in a short time without determining the tooth-shade in esthetic restorations.…”