title: [Comparative in vitro evaluation of color and color stability of composite and ceramic ionomer materials for esthetic repair of teeth].
abstract: Comparative colorimetric evaluation of shades and translucency of different samples, fabricated from Filtec Z-250, Unirest, Dyract AP and Vitremer, shows, that differences in their compositions and industrial technologies result to great differences between the shades of the same number of Vita Shade Guide. The less color stability after long term action by foods media to the samples was found for the glass ionomer cement. The best color stability was found for composites, partially, for Unirest. All of these, let us conclude, that the main changes, not only in shades, but in translucency of materials, as a result the action of model media, take place at the early periods (the first month). Usually, the most main changes in restorative materials take place in this period of beginning and connect with the end of setting processes and achieving the balances between water absorption and solubility.
authors.forename: I Ia
authors.initials: IIa
authors.lastname: Poiurovskaia
authors.forename: I M
authors.initials: IM
authors.lastname: Makeeva
authors.forename: E A
authors.initials: EA
authors.lastname: Emilenko
mesh_terms: D003116:Color / Q000592:standards*; D003124:Colorimetry / Q000295:instrumentation; D003188:Composite Resins / Q000737:chemistry*; D003793:Dental Restoration, Permanent; D004955:Esthetics, Dental; D005899:Glass Ionomer Cements / Q000737:chemistry*; D066298:In Vitro Techniques
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements
vernacular_title: Sravnitel'naia otsenka in vitro pokazateleĭ tsveta i tsvetostabil'nosti kompozitnykh i stekloionomernykh materialov dlia ésteticheskogo vosstanovleniia zubov.