Wourms D J, Campbell A D, Hicks M L, Pelleu G B
Naval Dental School, Bethesda, MD.
J Endod. 1990 May;16(5):224-6. doi: 10.1016/s0099-2399(06)81675-4.
The purpose of this study was to evaluate new or previously identified solvents for effectiveness in dissolving gutta-percha. The solubility of a standardized weight of gutta-percha was tested in 5-ml quantities of 32 solvents. Ten samples of 30 solvents were tested at both 22 and 37 degrees C for 15 min. If the gutta-percha samples dissolved within 15 min, the times were recorded and statistically analyzed. There was no significant difference (p greater than 0.05, one-way analysis of variance and Scheffe's test) between dissolving times of chloroform and trichloroethylene at 22 and 37 degrees C. At 22 degrees C, three solvents dissolved the gutta-percha sample, whereas at 37 degrees C, nine solvents dissolved the gutta-percha. At 37 degrees C, halothane (Fluothane) was twice as effective as cineole and demonstrated many favorable working qualities. An important finding from the experimentation with halothane was the discovery of a potential obturating material, which was termed "halopercha".
本研究的目的是评估新的或先前已确定的溶剂在溶解牙胶方面的有效性。将标准重量的牙胶在32种溶剂中以5毫升的量进行溶解度测试。对30种溶剂的10个样本在22摄氏度和37摄氏度下均测试15分钟。如果牙胶样本在15分钟内溶解，则记录时间并进行统计分析。在22摄氏度和37摄氏度下，氯仿和三氯乙烯的溶解时间之间无显著差异（p大于0.05，单因素方差分析和谢费检验）。在22摄氏度时，有三种溶剂溶解了牙胶样本，而在37摄氏度时，有九种溶剂溶解了牙胶。在37摄氏度时，氟烷（氟罗生）的效果是桉叶油醇的两倍，并表现出许多良好的工作特性。使用氟烷进行实验的一个重要发现是发现了一种潜在的充填材料，称为“氟牙胶”。
