title: Effect of a surface sealant on the color stability of composite resins after immersion in staining solution.
abstract: This study evaluated the influence of surface sealants on the color stability of 2 different composite resins after immersion in coffee. Four groups were created (n = 10): microhybrid composite, microhybrid with surface sealant, nanofilled composite, and nanofilled composite with surface sealant. Half of the specimens of each group were immersed in distilled water and half were immersed in coffee for 48 hours. Color was measured before and after immersion. Groups with surface sealants presented less color variation when compared with the groups without surface sealants. The nanofilled resin specimens presented the greatest color variation within the groups without sealant. The surface sealant positively influenced the color stability of composite resin specimens immersed in coffee. When surface sealant was not applied, the microhybrid specimens had better color stability than the nanofilled.
authors.forename: Lauana Borges
authors.initials: LB
authors.lastname: Pedroso
authors.forename: Luma Franciélle Cabreira
authors.initials: LF
authors.lastname: Barreto
authors.forename: Leonardo Lamberti
authors.initials: LL
authors.lastname: Miotti
authors.forename: Gabriel Ferreira
authors.initials: GF
authors.lastname: Nicoloso
authors.forename: Leticia Brandão
authors.initials: LB
authors.lastname: Durand
mesh_terms: D003069:Coffee / Q000009:adverse effects; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D010895:Pit and Fissure Sealants / Q000627:therapeutic use*
chemical_list: D003069:Coffee; D003188:Composite Resins; D010895:Pit and Fissure Sealants
keywords: coffee; color; composite resins; immersion; spectrophotometers