Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Effect of Cyclic Loading on Microleakage of Silorane Based Composite Compared With Low Shrinkage Methacrylate-Based Composites Publisher



Kermanshah H1 ; Yasini E2 ; Hoseinifar R3
Authors
Show Affiliations
Authors Affiliations
  1. 1. Department of Operative Dentistry, Dental Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Operative Dentistry, School of Dentistry, Kerman University of Medical Sciences, Shafa Street, Kerman, Iran

Source: Dental Research Journal Published:2016


Abstract

Background: There are many concerns regarding the marginal seal of composite restorations, especially when composite restorations are subjected to cyclic loading. The aim of this study was to evaluate the effect of cyclic loading on the microleakage of silorane based composite compared with low shrinkage methacrylate-based composites in class V cavities. Materials and Methods: In this in vitro study, class V cavities were prepared on the facial and lingual surfaces of 48 human premolars (96 cavities). The teeth were randomly divided into four groups of 12 teeth (24 cavities) each and restored as follows: Group 1 (Siloran System Adhesive + Filtek P90), Group 2 (All Bond SE + Aelite LS Posterior), Group 3 (Futurabond NR + Grandio), and Group 4 (G-Bond + Kalore-GC). All the specimens were thermocycled for 2000 cycles (5-55°C) and then half of the specimens from each group, were Load cycled. All teeth were immersed in 0.5% basic fuchsine dye, sectioned, and observed under a stereomicroscope. Data were analyzed using Wilcoxon test, Kruskal-Wallis, and Mann-Whitney U-tests. P < 0.05 was considered as significant. Results: In both unloaded and loaded groups, no statistically significant differences were observed among four composites at the occlusal margin, but a significant difference in gingival microleakage was found between Aelite and silorane. Occlusal and gingival microleakage was not affected by cyclic loading in none of the four restorative materials. Conclusion: Silorane did not provide better marginal seal than the low shrinkage methacrylate-based composites (except Aelite). In addition, cyclic loading did not affect the marginal microleakage of evaluated composite restorations. © 2016 Dental Research Journal | Published by Wolters Kluwer - Medknow.