氧化锌水门汀
• 丁香酚:牙髓安抚作用,树脂阻聚作用 • 用于暂时粘固 • 替代产品:聚羧酸锌水门汀、不含丁香酚
的氧化锌水门汀
磷酸锌水门汀
• 氧化锌+磷酸=磷酸锌水门汀
• 超过100年的临床验证时间,水门汀中 的“金标准“
• 压缩强度尚可,但拉伸强度低,粘结强 度低,牙髓刺激性大,溶解性高,成膜 厚度大。(“锌基垫底”)
水门汀成膜厚度应 越小越好
1. 冠就位时无需过大的力量 2. 冠就位后不形成咬合高点
超过工作时间会显著增加成膜厚度!
多数产品满足ISO标准(ANSI/ADA96) —25微米成膜厚度
*Kious AR, et al. J Prosthet Dent 2009
粘固性水门汀 Part 1 分类及特点
ISO 3107 150 N, 10 Min
Bagheri R. J Dent (Shiraz). 2013
Flow Rate
• Total of 0.5 mL of luting cement was placed on the center of a glass plate and a second glass plate of equal size was placed over the first, with an added weight centered on top for 1 minute. Therefore, the total weight acting on the specimen including the weight of glass plate was 120 grams. The added weight was then removed; the cement between the glass plates was lightcured through the top glass plate according to the manufacturer’s instruction. The diameter of each sample was measured using a digital micrometer, the average mean and standard deviations were then calculated.