Hence the compress strength of GIC increasing with aging may be due to reaction of Ca2+, Al3+ with polyacrylic acid will lasting a very long period.

• 结论:玻璃离子水门汀强度随时间延长而增加的原因主要在于Ca2+、Al3+与聚丙烯酸间的反应将持续一个相当长的时间,使基体交联密度增加,强度上升。