Arcoria C J, Fisher M A, Wagner M J
Department of Operative Dentistry, Baylor College of Dentistry, Dallas, Texas 75246.
J Oral Rehabil. 1991 Jan;18(1):9-14. doi: 10.1111/j.1365-2842.1991.tb00025.x.
Marginal microleakage was measured around amalgam restorations lined with alloy-glass ionomer cement and coated with a glass ionomer varnish. Preparations were made in 48 human extracted mandibular molar teeth. Alloy-glass ionomer liners and varnishes were placed into selected preparations. Tytin amalgam was inserted into all of the teeth and left unburnished and unpolished. Half of the total samples were thermocycled for 5 days and the remainder were left in deionized water. The teeth were immersed in a 0.5% methylene blue dye and sectioned vertically with a diamond saw. Microleakage was scored visually at x100 magnification, and the data were analysed using the Mann-Whitney U-test (P less than or equal to 0.05). Thermocycling did not have a significant effect on microleakage, except when both an alloy-glass ionomer liner and varnish were used. Overall, the use of an alloy-glass ionomer liner made the most significant difference in reducing microleakage.
测量了用合金玻璃离子水门汀衬里并涂有玻璃离子清漆的汞合金修复体周围的边缘微渗漏情况。在48颗拔除的人类下颌磨牙上制备样本。将合金玻璃离子衬里和清漆放入选定的样本中。将钛合金汞合金填入所有牙齿中，不进行打磨和抛光。总样本的一半进行5天的热循环，其余样本留在去离子水中。将牙齿浸入0.5%的亚甲蓝染料中，并用金刚石锯垂直切片。在100倍放大倍数下目视评估微渗漏情况，并使用曼-惠特尼U检验（P小于或等于0.05）分析数据。热循环对微渗漏没有显著影响，除非同时使用合金玻璃离子衬里和清漆。总体而言，使用合金玻璃离子衬里在减少微渗漏方面产生的差异最为显著。
