Yap A U, Tan S, Teh T Y
Faculty of Dentistry, National University of Singapore, Singapore.
J Oral Rehabil. 2000 Feb;27(2):117-23. doi: 10.1046/j.1365-2842.2000.00499.x.
The purpose of this in vitro study was to investigate the effect of polishing systems on the microleakage of conventional and resin-modified glass-ionomer cements. Class V cavities were prepared at the cemento-enamel junction of 80 freshly extracted posterior teeth. The prepared teeth were randomly divided into two groups and restored with conventional or resin-modified glass-ionomer cements. The restored teeth were stored in distilled water at 37 degrees C for 1 week after removal of excess restorative with diamond finishing burs. The restored teeth were then divided into four groups of 10 and finished and polished using the following systems: Two Striper MFS; Sof-Lex XT; Enhance Composite Finishing and Polishing System; Shofu Composite Finishing Kit. The finished restorations were subjected to dye penetration testing. Results showed that the microleakage at dentin margins of conventional glass-ionomer cements and enamel margins of resin-modified glass-ionomer cements are significantly affected by the different polishing systems.
本体外研究的目的是调查抛光系统对传统玻璃离子水门汀和树脂改性玻璃离子水门汀微渗漏的影响。在80颗新鲜拔除的后牙的牙骨质-釉质界制备V类洞。将制备好的牙齿随机分为两组，分别用传统玻璃离子水门汀或树脂改性玻璃离子水门汀进行修复。用金刚石精修钻去除多余的修复材料后，将修复后的牙齿在37℃的蒸馏水中储存1周。然后将修复后的牙齿分成四组，每组10颗，使用以下系统进行精修和抛光：Two Striper MFS；Sof-Lex XT；Enhance复合精修和抛光系统；Shofu复合精修套装。对精修后的修复体进行染料渗透测试。结果表明，不同的抛光系统对传统玻璃离子水门汀的牙本质边缘和树脂改性玻璃离子水门汀的釉质边缘的微渗漏有显著影响。
