Steinmetz M J, Pruhs R J, Brooks J C, Dhuru V B, Post A C
Am J Dent. 1997 Feb;10(1):36-40.
To evaluate the effect of exposure of 1.23% acidulated phosphate fluoride gel on fluoride release from fluoride releasing pit and fissure sealants and restorative resin composites.
Specimens of four fluoride releasing pit and fissure sealants (Helioseal F, Ultraseal XT, Seal Rite-Low Viscosity and Seal Rite-Regular Viscosity) and two fluoride releasing restorative resin composites (Tetric and Heliomolar Radiopaque) were prepared using a Teflon mold. The specimens were divided into two groups. The experimental group was exposed to 1.23% acidulated phosphate fluoride gel and the control group was exposed to 1.23% acidulated phosphate gel without fluoride. The specimens were stored in deionized water and the fluoride concentration of the solution was measured every 24 hours. On day 7, the discs were exposed to the respective gel for 4 minutes and then rinsed in a continuous stream of deionized water for 30 seconds. The fluoride concentration was then measured for another 7 days.
There was a significant increase after the fluoride gel treatment in the amount of fluoride released from all of the materials studied. When the cumulative amount of fluoride released was evaluated, Tetric, Heliomolar radiopaque, Helioseal F, and Ultraseal XT released significantly (P < 0.01) more fluoride than the respective control groups. There was no significant difference between groups from day 8 to day 14 for Seal Rite-Regular Viscosity and Seal Rite-Low Viscosity.
评估1.23% 酸化磷酸氟凝胶对从含氟窝沟封闭剂和修复性树脂复合材料中释放氟的影响。
使用聚四氟乙烯模具制备四种含氟窝沟封闭剂（Helioseal F、Ultraseal XT、Seal Rite - 低粘度和Seal Rite - 常规粘度）和两种含氟修复性树脂复合材料（Tetric和Heliomolar Radiopaque）的样本。样本分为两组。实验组暴露于1.23% 酸化磷酸氟凝胶，对照组暴露于不含氟的1.23% 酸化磷酸凝胶。样本储存在去离子水中，每24小时测量溶液中的氟浓度。在第7天，将圆盘暴露于相应凝胶中4分钟，然后在连续流动的去离子水中冲洗30秒。然后再测量7天的氟浓度。
在所有研究材料中，氟凝胶处理后释放的氟量有显著增加。当评估氟释放的累积量时，Tetric、Heliomolar radiopaque、Helioseal F和Ultraseal XT释放的氟比各自的对照组显著（P < 0.01）更多。对于Seal Rite - 常规粘度和Seal Rite - 低粘度，从第8天到第14天各实验组之间没有显著差异。
