Physical and Mechanical Characteristics of Short Fiber-Reinforced Resin Composite in Comparison With Bulk-Fill Composites Publisher Pubmed



Jafarnia S¹ ; Valanezhad A¹ ; Shahabi S² ; Abe S¹ ; Watanabe I¹ Show Affiliations
Source: Journal of Oral Science Published:2021

Abstract

Purpose: The objective of this study was to evaluate the physical and mechanical properties of a short fiber-reinforced resin composite: everX-Posterior and compare it with two bulk-fill composites, namely, Filtek Bulk-fill and Beautifil-Bulk, which are intended for large posterior restora-tions. Methods: Investigated properties were flexural strength, flexural modu-lus, surface roughness, volumetric shrinkage and depth of cure. Scanning electron microscopy images of each specimen after the flexural test were used for cross-sectional comparison. Results were analyzed using ANOVA following Tukey post-hoc test. Results: Flexural strength of everX-Posterior was comparable with two other resin composites, showing higher flexural modulus. EverX-Posterior showed the highest surface roughness after polishing and the lowest volumetric shrinkage (2.29%) among all composites used in this study. Data also showed that the everX-Posterior depth of cure was 4.24 mm, which was the highest among the three groups. Conclusion: Based on the results of this study, it was concluded that everX-Posterior as a short fiber-reinforced composite showed improvements and satisfactory performance in mechanical and physical properties, which make it a reliable base material candidate for large posterior restorations. © 2021, Nihon University, School of Dentistry. All rights reserved.