Forsten L
Institute of Dentistry, University of Turku, Finland.
Scand J Dent Res. 1990 Apr;98(2):179-85. doi: 10.1111/j.1600-0722.1990.tb00958.x.
Test specimens of seven different glass ionomer filling materials and one fissure sealant were exposed to running water for 2 yr. One amalgam and one composite, both containing fluoride, were included for comparison. The fluoride release from the specimens was measured periodically after storing the specimens for 24 h or 1 wk in a small amount of water. The fluoride release from the glass ionomers decreased with time and a constant level was reached for most products during the 2-yr period. The release was increased by lowering the pH of the storage solution. The release from the glass ionomers was clearly greater than from the amalgam and the composite.
将七种不同的玻璃离子充填材料和一种窝沟封闭剂的测试样本置于流动水中2年。为作比较，纳入了一种含氟汞合金和一种含氟复合材料。在将样本于少量水中储存24小时或1周后，定期测量样本的氟释放量。玻璃离子材料的氟释放量随时间减少，在2年期间，大多数产品达到了一个恒定水平。降低储存溶液的pH值可增加氟释放量。玻璃离子材料的氟释放量明显高于汞合金和复合材料。
