[Study of fluoride released from fluoride-releasing adhesives].

ABSTRACT

OBJECTIVE: To study the fluoride release ability of two kinds of fluoride-releasing composite resin adhesives made in China. METHODS: Test samples of fluoride-releasing composite resin adhesives I and II were prepared, and fluoride ion concentrations were measured with a No.720 fluoride ion-sensitive electrode. RESULTS: Fluoride ions were released from both of the fluoride-releasing composite resin adhesives. The concentration declined sharply after first 24 hours and maintained at a low level for about 21 days. The initial fluoride ions concentration of adhesive II was higher than adhesive I. CONCLUSION: Both of the fluoride-releasing composite resin adhesives had the ability of releasing fluoride. Adhesive II seemed better.