title: 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.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey.
authors.forename: Bora
authors.identifier: 0000-0003-1974-9719
authors.initials: B
authors.lastname: Bagis
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
authors.forename: Tamer
authors.initials: T
authors.lastname: Tüzüner
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
authors.forename: Sedanur
authors.identifier: 0000-0003-2534-9279
authors.initials: S
authors.lastname: Turgut
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
authors.forename: Fatih Mehmet
authors.initials: FM
authors.lastname: Korkmaz
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey.
authors.forename: Özgül
authors.initials: Ö
authors.lastname: Baygın
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Ankara University, Ankara, Turkey.
authors.forename: Yıldırım Hakan
authors.initials: YH
authors.lastname: Bağış
mesh_terms: D003116:Color; D003188:Composite Resins / Q000737:chemistry / Q000528:radiation effects*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties; D014466:Ultraviolet Rays
chemical_list: D003188:Composite Resins