title: Fluoride release profile of a nanofilled resin-modified glass ionomer cement.
abstract: The present study aimed to compare the fluoride (F-) release pattern of a nanofilled resin-modified glass ionomer cement (GIC) (Ketac N100 - KN) with available GICs used in dental practice (resin-modified GIC - Vitremer - V; conventional GIC - Ketac Molar - KM) and a nanofilled resin composite (Filtek Supreme - RC). Discs of each material (n=6) were placed into 4 mL of deionized water in sealed polyethylene vials and shaken, for 15 days. F- release (μg F-/cm²) was measured each day using a fluoride-ion specific electrode. Cumulative F- release means were statistically analyzed by linear regression analysis. In order to analyze the differences among materials and the influence of time in the daily F- release, 2-way ANOVA test was performed (α=0.05). The linear fits between the cumulative F- release profiles of RC and KM and time were weak. KN and V presented a strong relationship between cumulative F- release and time. There were significant differences between the daily F- release overtime up to the third day only for GICs materials. The daily F- release means for RC were similar overtime. The results indicate that the F- release profile of the nanofilled resin-modified GIC is comparable to the resin-modified GIC.
authors.affiliation: Department of Pediatric Dentistry, Orthodontics and Community Health, Bauru Dental School, USP - University of São Paulo, Bauru, SP, Brazil.
authors.forename: Marco Aurélio Benini
authors.initials: MA
authors.lastname: Paschoal
authors.forename: Carla Vecchione
authors.initials: CV
authors.lastname: Gurgel
authors.forename: Daniela
authors.initials: D
authors.lastname: Rios
authors.forename: Ana Carolina
authors.initials: AC
authors.lastname: Magalhães
authors.forename: Marília Afonso Rabelo
authors.initials: MA
authors.lastname: Buzalaf
authors.forename: Maria Aparecida de Andrade Moreira
authors.initials: MA
authors.lastname: Machado
mesh_terms: D002327:Cariostatic Agents / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry; D005459:Fluorides / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D017736:Ion-Selective Electrodes; D008422:Materials Testing; D053761:Nanocomposites / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry*; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D002327:Cariostatic Agents; D003188:Composite Resins; C474035:Filtek Supreme; D005899:Glass Ionomer Cements; C515713:Ketac Molar Easymix; D019279:Resin Cements; C084550:Vitremer; D014867:Water; D005459:Fluorides