Pretorius S, van Heerden W F
Department of Periodontics and Oral Medicine, Medical University of Southern Africa, MEDUNSA, South Africa.
J Dent Assoc S Afr. 1995 Aug;50(8):360-70.
The adaptation and sealing ability of a tricure glass ionomer material (Vitremer), used in a retrograde cavity was assessed and compared with amalgam. Fifty single-rooted, extracted teeth were prepared and filled endodontically. All teeth underwent root resection and retrograde cavities were prepared. The teeth were divided into two groups. One group of 10 teeth received a layer of varnish and an amalgam filling in a retrograde cavity, while the other group of 40 teeth received a layer of primer and a glass ionomer filling. All the teeth were placed in an aqueous solution of Procion Brilliant Blue for 7 days whereafter ground sections were prepared. Micro leakage was determined according to the extend of dye penetration using an image analysis system. The results showed that significantly less dye penetration was observed in teeth filled with the glass ionomer cement than in those with the amalgam.
评估了用于逆行洞的三固化玻璃离子材料（Vitremer）的适应性和封闭能力，并与汞合金进行了比较。制备并进行根管充填了50颗单根离体牙。所有牙齿均进行了牙根切除术并制备了逆行洞。将牙齿分为两组。一组10颗牙齿在逆行洞中接受一层清漆和汞合金充填，而另一组40颗牙齿接受一层底漆和玻璃离子充填。将所有牙齿置于普施安亮蓝水溶液中7天，然后制备磨片。使用图像分析系统根据染料渗透程度确定微渗漏。结果表明，与汞合金充填的牙齿相比，玻璃离子水门汀充填的牙齿中观察到的染料渗透明显更少。
