Castro G W, Gray S E, Buikema D J, Reagan S E
Department of General Dentistry, Wilford Hall Medical Center, Lackland AFB, TX 78236-5551, USA.
Oper Dent. 1994 Sep-Oct;19(5):194-8.
To protect glass-ionomer cement from moisture contamination and dehydration during initial setting, immediate application of a surface coating agent is recommended. This study compared the effect of various surface coatings on F release from glass-ionomer cement. Twenty glass-ionomer cement (Ketac Fil Aplicap) disks (4.52 cm2) were prepared from a Teflon mold. The control group was uncoated, while the experimental groups were coated with Visiobond, Scotchbond II, and Ketac Varnish. In addition, five specimens of Variglass were similarly prepared and remained uncoated as per the manufacturer's instructions. F release was measured each day during week 1 and on the last day of weeks 2, 3, and 4. The results indicated that the application of the surface coatings did not completely inhibit F release from glass-ionomer cements, and that F release during the first week for all groups was significantly greater than in the subsequent 3 weeks. Visiobond-coated glass-ionomer cement allowed significantly more F release than Scotchbond II-coated glass-ionomer cement, Ketac Varnish-coated glass-ionomer cement, or Variglass.
为在玻璃离子水门汀初始凝固期间防止其受到湿气污染和脱水影响，建议立即使用表面涂层剂。本研究比较了各种表面涂层对玻璃离子水门汀氟释放的影响。用聚四氟乙烯模具制备了20个玻璃离子水门汀（Ketac Fil Aplicap）圆盘（4.52平方厘米）。对照组未涂覆，而实验组分别用Visiobond、Scotchbond II和Ketac清漆涂覆。此外，按照制造商说明类似地制备了5个Variglass样本且未进行涂覆。在第1周每天以及第2、3、4周的最后一天测量氟释放量。结果表明，表面涂层的应用并未完全抑制玻璃离子水门汀的氟释放，并且所有组在第1周的氟释放量显著高于随后3周。涂有Visiobond的玻璃离子水门汀的氟释放量显著高于涂有Scotchbond II的玻璃离子水门汀、涂有Ketac清漆的玻璃离子水门汀或Variglass。
