In vitro evaluation of gutta-percha dissolution ability of different solvents

Abstract

Introduction: The removal of the filling material during the Endodontic retreatment is essential, so a better action of solvents on the gutta-percha is desired. Objective: To evaluate in vitro the gutta-percha dissolution ability of different solvents. Material and methods: Four solvents (xylol, eucalyptol, citrol, and orange oil) were applied on gutta-percha points, which had been later submitted to the weight loss analysis at 2, 5, and 10 minutes. For each solvent, 30 size #60 main cones were used, divided into three groups. Distilled water was used as control group. The statistical test applied was Kruskal-Wallis. Results: No statistically significant difference occurred among the solvents at 2 minutes (p > 0.05); however, during this period, citrol had the best performance. In longer time intervals, the xylol showed differences compared to eucalyptol at 5 minutes and to eucalyptol and citrol at 10 minutes (p < 0.05). The worst results were found for eucalyptol. Conclusion: This xylol was the solvent with improved ability to dissolve the gutta-percha points, with better results at longer time periods.

Comparing the softening effect of three gutta-percha solvents on different types of gutta-percha with different application durations

“…Conversely, the OO and EO did not have greater effects than water, regardless of the duration of application, which is a result in agreement with a previous study ( Tanomaru-Filho et al, 2010 ). In their study, de Oliveira et al (2017) reported that EO, when used with CGP, had the least effective dissolution ability when compared to OO, xylol, and citrol. However, their results contradict those of previous studies on CGP that reported these oils to have comparable effects to that of chloroform ( Rehman et al, 2013 ) and higher dissolving abilities than that of water ( Magalhães et al, 2007 , Oyama et al, 2002 , Tanomaru-Filho et al, 2010 ).…”