title: Color stability of resin composites after immersion in different drinks.
abstract: The purpose of this study was to evaluate the discoloration of two nanohybrids, two microhybrids, and a posterior composite resin restorative material upon exposure to different drinks--namely tea, cola, coffee, red wine, and water. The colors of all specimens before and after storage in the solutions were measured by a colorimeter based on CIE Lab system, and the color differences thereby calculated. Data were analyzed by two-way analysis of variance (ANOVA) and Tukey's HSD test. According to ANOVA, the restorative material, staining agent, and their interaction were found to play a statistically significant role (P = 0.0001) in color change. Among the staining agents, water consistently showed the lowest deltaE* value for all materials, whereas red wine showed the highest deltaE* value. In other words, for all the materials tested, their color change in staining agents ranked in this increasing order: water < cola < tea < coffee < red wine. In terms of comparison among the five restorative materials, Filtek P60 and Z250 were observed to manifest less color change than the nanohybrids and Quadrant LC.
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey. ertaner@omu.edu.tr
authors.forename: Ertan
authors.initials: E
authors.lastname: Ertaş
authors.forename: Ahmet Umut
authors.initials: AU
authors.lastname: Güler
authors.forename: Ali Cağin
authors.initials: AC
authors.lastname: Yücel
authors.forename: Hülya
authors.initials: H
authors.lastname: Köprülü
authors.forename: Eda
authors.initials: E
authors.lastname: Güler
mesh_terms: D001628:Beverages; D003069:Coffee; D030221:Cola; D003116:Color; D003124:Colorimetry; D003188:Composite Resins / Q000737:chemistry; D003793:Dental Restoration, Permanent; D010316:Particle Size; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D013662:Tea; D014867:Water; D014920:Wine
chemical_list: D003069:Coffee; D003188:Composite Resins; D011109:Polymethacrylic Acids; D013662:Tea; D014867:Water; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols