Bertacchini S M, Abate P F, Blank A, Baglieto M F, Macchi R L
Department of Dental Materials, School of Dentistry, University of Buenos Aires, Argentina.
Quintessence Int. 1999 Mar;30(3):193-7.
The degree of solubility and the fluoride release of glass-ionomer cements and "compomers" were determined as a function of time.
Three conventional glass-ionomer cements, three hybrid ionomers, and two compomers were included in the study. Disk-shaped specimens were prepared and immersed in a lactic acid solution. Solubility was evaluated from determinations of loss of mass as a function of time. To evaluate fluoride release, similar specimens were immersed in 50 mL of deionized water to which 50 mL of buffer solution was added. A fluoride ion detector was used to read the concentration of fluoride ion in the overall solution at different times after immersion.
Material and time factors had a significant influence on results. The compomers showed less corrosion and fluoride release than the ionomers. Some correlation was found between solubility and fluoride leakage values.
Components of both the ionomers and compomers that were studied can dissolve in water. The materials leak fluoride ions in amounts that differ according to the characteristics of the individual products.
测定玻璃离子水门汀和“复合体”的溶解度及氟释放量随时间的变化情况。
本研究纳入了三种传统玻璃离子水门汀、三种混合离子水门汀和两种复合体。制备圆盘状标本并将其浸入乳酸溶液中。根据质量损失随时间的测定结果评估溶解度。为评估氟释放情况，将类似的标本浸入添加了50 mL缓冲溶液的50 mL去离子水中。使用氟离子探测器读取浸入后不同时间整个溶液中氟离子的浓度。
材料和时间因素对结果有显著影响。复合体的腐蚀和氟释放比离子水门汀少。在溶解度和氟泄漏值之间发现了一些相关性。
所研究的离子水门汀和复合体的成分都能溶于水。这些材料释放氟离子的量因各产品的特性而异。
