The effect of different organic solvents on the degradation of restorative materials

• Published in: European journal of dentistry 2013-07, Vol.7 (3), p.347-351
• Main Authors: Martos, Josué, Machado Silveira, Luiz Fernando, Silveira, Carina Folgearini, Suita de Castro, Luis Antonio, Ferrer-Luque, Carmen María
• Format: Article
• Language: English
• Subjects: Chemical properties; Decomposition (Chemistry); Dental equipment and supplies; Original; Original Article; Polymers; Solvents; Testing
• ISSN: 1305-7456; 1305-7464
• DOI: 10.4103/1305-7456.115419

ABSTRACT Objective: To evaluate the solubility of three restorative materials exposed to the different endodontic solvents. Materials and Methods: The organic solvents eucalyptus oil, xylol, chloroform, and orange oil, with distilled water as the control group was utilized. The restorative materials light-cured resin (Filtek Z250/3M ESPE), light-cured-resin-reinforced glass ionomer (Riva Light Cure LC/Southern Dental Industries SDI]) and resin-modified glass ionomer (Vitremer/3M ESPE) were analyzed. A total of 50 disks containing specimens (2 mm Χ 8 mm Ø) were prepared for each of the three classes of restorative materials, which were divided into 10 groups ( n = 5) for immersion in eucalyptus oil, xylol, chloroform, orange oil or distilled water for periods of either 2 min or 10 min. The means of restorative material disintegration in solvents were obtained by the difference between the original preimmersion weight and the postimmersion weight in a digital analytical scale. Data were statistically analyzed by two-way analysis of variance while the difference between the materials was analyzed by Student-Newman-Keuls test. The significance level set at 0.05. Results: Vitremer showed the highest solubility, followed by Riva LC, and these were statistically different from eucalyptus oil, xylol, chloroform, and distilled water ( P < 0.05). Regarding the immersion time in solvents, there were no significant differences between the two tested periods ( P > 0.05). Conclusions: The solvents minimally degraded the composite resin, although they did influence the degradation of both resin-modified glass ionomer resin and resin reinforced with glass ionomer.