title: Fluoride release from three glass ionomers, a compomer, and a composite resin in water, artificial saliva, and lactic acid.
abstract: The amounts and the pattern of fluoride release from one metal-reinforced glass ionomer cement, two resin-modified glass ionomer cements, one compomer, and one composite resin placed in double-distilled water, artificial saliva, and lactic acid were evaluated in this study. Measurements of fluoride ion release were made for a total of 105 cylindrical specimens (10 mm in diameter and 1.5 mm in height). They were taken over a period of 16 weeks at the intervals of 4, 8, 12, and 24 hours, as well as 2, 3, 7, 14, 28, 56, and 112 days. The pattern of fluoride release was similar for all of the examined materials. The greatest amount of fluoride was released from the metal-reinforced glass ionomer Argion. The resin-modified glass ionomers Vitremer, Fuji II LC; the compomer Dyract; and the composite resin Tetric followed in ranking order. The pH of the environment strongly affected the fluoride release from the materials. There was a significant difference (P < 0.001) in the amounts of fluoride released in lactic acid vs water and artificial saliva, whereas, there was no significant difference (P > 0.05) in the amounts of fluoride released in water vs artificial saliva.
authors.affiliation: Aristotle University of Thessaloniki, School of Dentistry, Department of Operative Dentistry, Thessaloniki, Greece.
authors.forename: P
authors.initials: P
authors.lastname: Karantakis
authors.forename: M
authors.initials: M
authors.lastname: Helvatjoglou-Antoniades
authors.forename: S
authors.initials: S
authors.lastname: Theodoridou-Pahini
authors.forename: Y
authors.initials: Y
authors.lastname: Papadogiannis
mesh_terms: D000704:Analysis of Variance; D002327:Cariostatic Agents / Q000032:analysis / Q000737:chemistry*; D020770:Compomers / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry; D004356:Drug Storage; D005459:Fluorides / Q000032:analysis / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D019344:Lactic Acid / Q000737:chemistry; D008422:Materials Testing / Q000379:methods / Q000706:statistics & numerical data; D008689:Methacrylates / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D012117:Resins, Synthetic / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D017640:Silicates / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D002327:Cariostatic Agents; D020770:Compomers; D003188:Composite Resins; C088486:Dyract; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D008689:Methacrylates; D019279:Resin Cements; D012117:Resins, Synthetic; D012464:Saliva, Artificial; D017640:Silicates; C084550:Vitremer; C448320:argion; D014867:Water; D019344:Lactic Acid; D005459:Fluorides