title: Fluoride release from three glass ionomer materials and the effects of varnishing with or without finishing.
abstract: The release rates of fluoride from discs made from three glass ionomer products, Miracle Mix (MM), Ketac-Silver (KS) and Ketac-Bond (KB), into artificial saliva for 3 weeks were determined. The discs were either not varnished, varnished or varnished and finished. The release rates were not proportional to the fluoride concentrations of the products and were ordered: MM > KB > KS. The rates declined sharply as a function of time regardless of the product or treatment. Varnishing the discs caused a reduction of 61-76% depending on the product. Finishing the varnished discs produced a significant increase in the fluoride release from MM but had no effect on the release from KS or KB. In a separate study with MM, it was determined that the release rate of fluoride was inversely proportional to the powder: liquid ratio used to prepare the discs.
authors: Department of Pediatric Dentistry, School of Dentistry, Medical College of Georgia, Augusta 30912-1129.
authors: C
authors: C
authors: McKnight-Hanes
authors: G M
authors: GM
authors: Whitford
mesh_terms: D016722:Cermet Cements / Q000032:analysis / Q000737:chemistry; D003775:Dental Polishing; D004058:Diffusion; D005459:Fluorides / Q000032:analysis / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000032:analysis / Q000737:chemistry*; D008422:Materials Testing; D010150:Paint; D010895:Pit and Fissure Sealants / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D013499:Surface Properties; D013997:Time Factors
chemical_list: D016722:Cermet Cements; D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants; D012464:Saliva, Artificial; C061499:Ketac-Bond; C078801:Miracle Mix; D005459:Fluorides