Effects of Protective Resin Coating on the Surface Roughness and Color Stability of Resin-Based Restorative Materials

Abstract

The aim of this study was to evaluate the effects of nanofilled protective resin coating (RC) on the surface roughness (Ra) and color stability (ΔE) of resin-based restorative materials (RM) (compomer (C), nanofilled composite (NF), and microhybrid composite (MH)) after being submitted to the ultraviolet aging (UV) method. Thirty-six specimens were prepared (n = 6 for each group). The Ra and (ΔE) values and SEM images were obtained before and after UV. Significant interactions were found among the RM-RC-UV procedures for Ra (P < 0.001). After the specimens were submitted to UV, the Ra values were significantly increased, regardless of the RC procedure (with RC; P < 0.01 for all, without RC; C (P < 0.01), NF (P < 0.001), and MH (P < 0.001)) for each RM. Significant interactions were found between the RM-RC (P < 0.001) procedures for the ΔE values. The ΔE values were increased in each group after applying the RC procedures (P < 0.001). Protective RC usage for RM could result in material-related differences in Ra and ΔE as with used UV method.

Color stability and surface roughness of polished anterior restorative materials

“…This result is in agreement with previous studies 13,14) . Hydrophobic materials such as resins are believed to exhibit greater stain resistance and color stability than hydrophilic materials 13,15,16) .…”

“…It was also reported that the resin-coated samples had significantly higher R a values than the control group after UV aging for both the compomer and the composite. Bagis et al 14) believed that higher and clinically unacceptable Ra values after UV aging might be related to the aging method that was used in their study. In the current study, there were no differences among the polishing systems and restorative material groups on the surface roughness after staining and thus second null hypothesis of the study was accepted.…”

“…Bagis et al 14) used a resin coating on the surface of a compomer and a microhybrid composite and aged the samples with UV. They reported that the R a values of the samples after aging were significantly higher than those before aging in both the compomer and composite groups, independent of the resin coat, and higher R a values for the composite than for the compomer after UV aging.…”

The evaluation of surface sealants effect on the color stability of Nano-hybrid composite after polishing with One-Step system (in-vitro)

“…The Acid-etch technique was introduced by Buonocore in 1955, later in 1956, Bowen introduced resin Composites ( 1 , 2 ). The development of resin composites has led to the inclusion of aesthetic aspects of dental direct restorations and met the demands of patients who are not only expecting a dentist to reconstruct their teeth with their restorative materials, but also require restorations that are tooth-colored and not detectable ( 3 , 4 ).…”

In Vitro Assessment of Water Sorption, Solubility and Surface Roughness of Compomer and Giomer Materials After Immersion in Different Beverages

“…Therefore, investigating surface roughness is important to predict the longevity of the restoration. Higher surface roughness represents a risk factor for accumulation of plaque and stains on dental restoration which in turn may affect friction, wear and optical properties of the restoration (4,10,11,(20)(21)(22)(23)(24)(25) .…”