Oyama Kazumi Onaga Nagayama, Siqueira Evandro Luiz, Santos Marcelo dos
Discipline of Endodontics, Faculty of Dentistry, USP, São Paulo, SP, Brazil.
Braz Dent J. 2002;13(3):208-11. doi: 10.1590/s0103-64402002000300014.
The aim of this study was to assess the effectiveness of five different solvents: xylol, eucalyptol, halothane, chloroform and orange oil on softening gutta-percha in simulated root canals. One drop of solvent was placed into a reservoir made in a simulated canal whose channel was previously instrumented and filled with gutta-percha and N-Rickert sealer. After 5 min, softening was evaluated for each solvent by the penetration of a spreader while applying force with a 442 Instron apparatus to reach a depth of 5 mm. The results were analyzed statistically by the Kruskal-Wallis test. Xylol and orange oil were better in softening gutta-percha than the other solvents. There was no significant difference between xylol and orange oil, but these were statistically different from eucalyptol, halothane and chloroform (p < 0.01).
本研究的目的是评估五种不同溶剂（二甲苯、桉叶油、氟烷、氯仿和橙油）在模拟根管中软化牙胶的效果。将一滴溶剂滴入模拟根管中制作的储液器中，该模拟根管的通道事先已进行预备并填充了牙胶和N - Rickert封闭剂。5分钟后，使用442型英斯特朗仪器施加力使探子穿透，以评估每种溶剂在达到5毫米深度时对牙胶的软化情况。结果通过Kruskal - Wallis检验进行统计学分析。二甲苯和橙油在软化牙胶方面比其他溶剂效果更好。二甲苯和橙油之间没有显著差异，但它们与桉叶油、氟烷和氯仿在统计学上有差异（p < 0.01）。
