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Quintessence International
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Quintessence Int 25 (1994), No. 9     1. Sep. 1994
Quintessence Int 25 (1994), No. 9  (01.09.1994)

Page 603-608


A comparison of fluoride release from four glass-ionomer cements
Perrin / Persin / Sarrazin
Fluoride release from three glass-ionomer cements and one cermet was measured over 1 year and compared. All the materials released fluoride in a similar pattern for the study's duration. The fluoride release was greatest on the fir st day, decreased sharply the second day, and gradually diminished. After 1 year, all specimens released daily fluoride concentrations above 0.5 ppm, reaching as much as 7 ppm. Low powder-liquid ratios always lead to more fluoride release than high ratios.