Evaluation of Color and Spectral Behavior of a Novel Flowable Resin Composite after Water Aging: An In Vitro Study

Abstract

Background: This study aimed to evaluate the color matching, light transmittance, and reflectance characteristics of the novel flowable resin composite OCF-001 (OCF). Methods: Fifty-four resin composite molds were made with simulated class I cavities of A2, A3, and A4 shades by filling the rubber mold interspace with Estelite Sigma Quick (ESQ), Gracefil Putty (GP) and Filtek Supremme Ultra (FSU). After applying the adhesive, three different flowable resin composites (n = 6), OCF, Gracefil LoFlo (GLF), and Supreme Ultra Flowable (SUF), were used to fill the cavities. A colorimeter was used to measure the color parameters (CIEDE2000). The color measurements were taken immediately and after 28 days. Data were analyzed using the nonparametric Kruskal–Wallis (α = 0.05) and Wilcoxon tests. The light transmittance and reflection characteristics were measured with a black background using a spectrophotometer under D65 illumination. Results: The ΔE00, and ΔC of OCF was lower than other tested materials in A2 and A3 shades both immediately and after 28 days. OCF showed the highest transmittance characteristic, and a relatively stable reflectance curve in all the wavelengths. Conclusions: OCF showed better shade matching with the surrounding shades of A2 and A3, a relative uniform reflectance and higher light transmission properties.

Physico-mechanical properties of aesthetic resin composites

“…Resin composites are the most versatility demanded restorations for anterior and posterior teeth in dental practice due to their improved physical and mechanical properties as well as their satis ed aesthetic appeal through the developments in ller technology [2,3]. Since people's more concern for aesthetics, the research effort has focused on improving the matching the color of the resin composite to the surrounding cavity to increase their clinical service [4]. Composite technology rapidly evolves with new aesthetic characteristic of resin composites products being released in the market every year.…”

“…Aesthetic resin composites with improved translucency and enhanced structural integrity provided better blending capabilities, which blended into the teeth even if the shade picked was a little off [5,6]. Shortly after the application of aesthetic resin composites, universal-shade resin composites are born on demand marketably, universal-shade is only single shade, which is expected to match nearly all shades of the surrounding tooth [4,7]. Some researches have reported that universal-shade type of resin composites revealed barely indistinguishable color difference compared to the conventional types of resin composites [7,8].…”

“…The optical properties such as re ectance and opalescence characteristic of universal-shade resin composites vary among materials [8]. An increasing number of studies further revealed the color stability and clinical wide use of universal-shade resin composites [4,9].…”