title: Simultaneous release of fluoride and aluminum from dental materials in various immersion media.
abstract: Since fluoride (F-) and aluminum (Al3+) present anticariogenic properties and F- release from ionomeric materials depends on the media used in the evaluation, this study tested the hypothesis whether release of Al3+ also depends on the testing media. The simultaneous release of F- and Al3+ was assessed over 15 days in three media: (i) distilled and deionized water (H2O), (ii) artificial saliva (AS) and (iii) solutions simulating a cariogenic challenge (pH-cycling in demineralizing and remineralizing solutions, De-Re-). Six cylindrical samples of each tested material (Ketac-Fil, Vitremer, Fuji Ortho LC and F 2000) were prepared and suspended individually in 1.0 mL of each solution. All solutions were changed daily. F- and Al3+ were determined by ion-selective electrode and atomic absorption, respectively. ANOVA showed statistical significance for the interaction of material, time, media (p < 0.05), either for F- or Al3+ release. The resin-modified glass ionomer Vitremer released the highest amount of F- and Al3+ in De-Re- solutions compared to the other materials (p < 0.05); differences among the materials in H2O and AS were statistically consistent. The data suggest that the media used to evaluate the simultaneous release of F- and Al3+ should be taken into account when the anticariogenic potential of different dental materials is assessed.
authors.affiliation: University of Campinas, Faculty of Dentistry of Piracicaba, Piracicaba, SP, Brazil.
authors.forename: Mitsue F
authors.initials: MF
authors.lastname: Hayacibara
authors.forename: Glàucia Maria Bovi
authors.initials: GM
authors.lastname: Ambrozano
authors.forename: Jaime A
authors.initials: JA
authors.lastname: Cury
mesh_terms: D000085:Acetates / Q000737:chemistry; D000180:Acrylic Resins / Q000737:chemistry; D000535:Aluminum / Q000737:chemistry*; D000538:Aluminum Silicates / Q000737:chemistry; D000704:Analysis of Variance; D002021:Buffers; D002130:Calcium Phosphates / Q000737:chemistry; D002327:Cariostatic Agents / Q000737:chemistry*; D020770:Compomers / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003738:Dental Cements / Q000737:chemistry*; D005459:Fluorides / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007101:Immersion; D008298:Maleates / Q000737:chemistry; D008422:Materials Testing; D012464:Saliva, Artificial / Q000737:chemistry; D019810:Sodium Azide / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D000085:Acetates; D000180:Acrylic Resins; D000538:Aluminum Silicates; D002021:Buffers; D002130:Calcium Phosphates; D002327:Cariostatic Agents; D020770:Compomers; D003188:Composite Resins; D003738:Dental Cements; C118368:F2000 cement; C095451:Fuji Ortho LC; D005899:Glass Ionomer Cements; D008298:Maleates; D012464:Saliva, Artificial; C084550:Vitremer; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; D014867:Water; C485838:calcium phosphate, monobasic, anhydrous; C040964:Ketac-Fil; D019810:Sodium Azide; C020243:calcium phosphate; D000535:Aluminum; C485829:calcium phosphate, dibasic, anhydrous; D005459:Fluorides