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


CONCLUSIONS
Both of the fluoride-releasing composite resin adhesives had the ability of releasing fluoride. Adhesive II seemed better.
Chen
Zhen-qi
ZQ
Department of Orthodontics, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
Shen
Gang
G
Chen
Ling-ling
LL
Peng
Shi-sheng
SS
Huang
Tu-mu
TM
Cao
Zheng-wang
ZW