Aktener B O, Pehlivan Y
Department of Endodontics, Ege University Dental Faculty, Bornova, Izmir, Turkey.
Int Endod J. 1993 Mar;26(2):137-41. doi: 10.1111/j.1365-2591.1993.tb00556.x.
An in vitro dye leakage study was performed to compare the sealing ability of high copper amalgam with cavity varnish and cermet ionomer cement with and without varnish when used as retrofilling materials. The root canals of 54 maxillary anterior teeth were instrumented and obturated with gutta-percha and sealer. The apical 3 mm of the roots were resected and apical class I cavity preparations were made. The roots were then randomly divided into three groups and retrofilled with one of the experimental materials. After 72 h of immersion in India ink, the roots were cleared and evaluated for leakage with a stereomicroscope. Statistical analysis indicated that the cermet ionomer cement with varnish group had significantly less leakage than the amalgam group (P < 0.0014) and the cermet ionomer cement without varnish group (P < 0.001). There was no significant difference between the other two groups (P > 0.05).
进行了一项体外染料渗漏研究，以比较高铜汞合金与窝洞封闭剂以及含和不含封闭剂的金属陶瓷离子水门汀作为倒充填材料时的封闭能力。对54颗上颌前牙的根管进行预备，并用牙胶和封闭剂充填。切除牙根根尖3毫米部分，并制备根尖I类洞形。然后将牙根随机分为三组，并用其中一种实验材料进行倒充填。在印度墨水中浸泡72小时后，清理牙根，并用体视显微镜评估渗漏情况。统计分析表明，使用封闭剂的金属陶瓷离子水门汀组的渗漏明显少于汞合金组（P < 0.0014）和未使用封闭剂的金属陶瓷离子水门汀组（P < 0.001）。其他两组之间无显著差异（P > 0.05）。
