The Blending Effect of Single-Shade Composite with Different Shades of Conventional Resin Composites—An In Vitro Study

Abstract

Objectives Single-shade composite systems are gaining popularity among clinicians due to the claimed potential of blending with different tooth structure shades while restoring the tooth. The purpose of this study was to evaluate the blending effect of two single-shade composite with different shades of conventional resin composite systems. Materials and Methods Seventy-two composite cylinders of B1, B2, A1, A2, A3, or A3.5 shade from CharmFil Plus (CP) and Filtek Universal Restorative (3M) were prepared using custom-made silicone mold. Single-shade composite OMNICHROMA (OC) or Beautifil II Enamel (BE) was placed in the center of each cylinder and polymerized. The color parameters, lightness (L*), chroma (C*), and hue (H*) of each composite were measured using a color chronometer. Furthermore, color stability of the samples was evaluated after 1-week staining challenge. Statistical Analysis Multivariant analysis was performed to evaluate the effect of material and shade on the color parameters. Multiple comparisons of the data were performed using post hoc test. The staining challenge data were analyzed using repeated measure analysis of variance and paired sample T-test. Results The multivariant analysis showed a statistically significant difference in color parameters among CP, 3M, OC, and BE (p = 0.001). Image analysis showed a visual blending effect for both OC and BE for certain shades; however, some color contrast with the darker shades was observed. The C* value of OC showed a similar pattern to CP; however, the H* of the latter was closely followed by BE. The L* value showed statistically significant difference among the shades of 3M, and in OC and BE when blended with 3M. Conclusion All four materials used in this study showed color alteration after the staining challenge. Single-shade composite can blend with only certain shades of resin composites.

Effect of two artificial aging protocols on color and gloss of single-shade versus multi-shade resin composites

“…It is considered one of the most widely researched singleshade material, with several research work investigating its color adjustment potential [6,9,[20][21][22], and optical properties [23,24]. The color stability of Omnichroma under accelerated aging conditions using Xenon Arc UV light sources to simulate exposure to natural sunlight [25] and 1 week staining in tea [26] were also investigated. In addition, its instrumental color adjustment potential was shown to improve after 1 month storage in distilled water [27].…”

Fluorescence of Esthetic Resin Composites: Spectrophotometry and Photography Analysis Techniques

“…The color of a natural tooth is determined by a combination of the optical properties of dentin and enamel, 1 which results from the reflection and refraction of light on those tissues. 2 3…”

“…The color of a natural tooth is determined by a combination of the optical properties of dentin and enamel, 1 which results from the reflection and refraction of light on those tissues. 2,3 To mimic the chromatic harmony of the natural tooth, direct esthetic restorations have been made in layers with different resin composite masses with the same optical characteristics as natural enamel and dentin.…”

Color and Translucency Variation of a One-Shaded Resin-Based Composite after Repeated Heating Cycles and Staining

“…Resin-based composites (RBCs) are widely used as direct restorative materials due to their versatility in different clinical scenarios, good mechanical properties, and excellent aesthetics [ 1 , 2 , 3 , 4 ]. Since nanotechnology was introduced in the manufacturing of dental RBCs, nanocomposites have demonstrated superior properties compared to their predecessors [ 1 , 5 ].…”

“…Due to the immense advantages of using a one-shaded RBC in different clinical situations, a significant amount of research followed the introduction of OM on the market. The color and optical behavior of OM were intensely investigated in recent studies [ 4 , 5 , 9 , 12 , 13 , 14 , 15 , 16 ]. It was found that the filler system with supra-nanospherical particles demonstrated increased light transmission [ 17 ].…”