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[Study of fluoride released from fluoride-releasing adhesives]
Zhen-qi Chen1, Gang Shen, Ling-ling Chen
1Department of Orthodontics, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
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.