Modaresi Jalil, Aghili Hossein
Shahid Sadoughi Dental School, Yazd, Iran.
J Clin Dent. 2006;17(3):64-6.
The purpose of this study was to compare the sealing ability of a new experimental material named "cold ceramic" with glass ionomer using an electrochemical method.
Forty extracted human teeth were used in this study. The crowns were removed at the cemento-enamel junction. The roots were prepared, the apical 3 to 4 mm of each root was resected, and a class 1 cavity of 2 mm depth was prepared. After application of nail polish to the external surface of the roots, the samples were randomly divided into two groups, each with 20 roots. Each sample was filled with one of the two materials. After 24 hours, to allow complete setting, the roots were immersed in normal saline solution for 10 days. Microleakage was measured by an electrochemical method.
The results indicated that there is a statistically significant difference in the microleakage between the two materials (p = 0.0001), with the cold ceramic providing a better seal than the glass ionomer.
Cold ceramic has proper sealing ability and reduced initial setting time that demonstrate its potential as a root end filling material.
本研究旨在采用电化学方法比较一种名为“冷陶瓷”的新型实验材料与玻璃离子水门汀的封闭能力。
本研究使用了40颗拔除的人类牙齿。在牙骨质-釉质界处去除牙冠。对牙根进行预备，切除每个牙根根尖3至4毫米的部分，并制备一个深度为2毫米的I类洞。在牙根外表面涂抹指甲油后，将样本随机分为两组，每组20个牙根。每个样本用两种材料中的一种进行充填。24小时后，待材料完全凝固，将牙根浸泡在生理盐水中10天。采用电化学方法测量微渗漏。
结果表明，两种材料之间的微渗漏存在统计学显著差异（p = 0.0001），冷陶瓷的封闭效果优于玻璃离子水门汀。
冷陶瓷具有良好的封闭能力且凝固初期时间缩短，显示出其作为根尖充填材料的潜力。
