Aboush Y E, Torabzadeh H
Department of Oral and Dental Sciences, University of Bristol, UK.
J Can Dent Assoc. 1998 Sep;64(8):561-4, 568.
This study measured the amount of fluoride released from three light-activated glass polyalkenoate (ionomer) cements, a conventional glass polyalkenoate, a compomer and a fluoridated composite over a period of 12 months.
Five discs (7 x 2 mm) of each material were sequentially immersed in 4 mL portions of deionized water at 37 degrees C and before each measurement, the test specimen was rinsed with 1 mL of deionised water. An Orion Model 901 microprocessor digital Ionalyzer was used for the measurements and the data obtained were converted into microgram/cm2. The amount of fluoride released was measured 86 times during the 12-month test period.
It was found that the pattern of fluoride release from the light-activated glass polyalkenoates was similar to that of the conventional glass polyalkenoate. The light-activated glass polyalkenoates, however, released significantly more fluoride than the conventional material. The composite and the compomer released significantly less fluoride than any glass polyalkenoate tested and the difference between the composite and the compomer was not significant.
It was concluded that the light-activated glass polyalkenoates tested released more fluoride than a conventional glass polyalkenoate, a compomer or a composite, and that with regard to fluoride release the compomer behaved more or less like the composite.
本研究测量了三种光固化玻璃聚烯酸酯（离子体）水门汀、一种传统玻璃聚烯酸酯、一种复合体和一种含氟复合树脂在12个月期间释放的氟化物量。
每种材料的五片圆盘（7×2毫米）依次浸入37℃的4毫升去离子水中，每次测量前，用1毫升去离子水冲洗测试样本。使用奥立龙901型微处理器数字离子分析仪进行测量，并将获得的数据换算成微克/平方厘米。在12个月的测试期内测量了86次氟化物释放量。
发现光固化玻璃聚烯酸酯的氟化物释放模式与传统玻璃聚烯酸酯相似。然而，光固化玻璃聚烯酸酯释放的氟化物明显多于传统材料。复合体和聚酸复合树脂释放的氟化物明显少于所测试的任何玻璃聚烯酸酯，且复合体和聚酸复合树脂之间的差异不显著。
得出的结论是，所测试的光固化玻璃聚烯酸酯释放的氟化物比传统玻璃聚烯酸酯、聚酸复合树脂或复合树脂更多，并且就氟化物释放而言，聚酸复合树脂的表现或多或少与复合树脂相似。
