Physical and mechanical characteristics of short fiber-reinforced resin composite in comparison with bulk-fill composites

• Published in: Journal of Oral Science Vol. 63; no. 2; pp. 148 - 151
• Main Authors: Jafarnia, Shiva, Valanezhad, Alireza, Shahabi, Sima, Abe, Shigeaki, Watanabe, Ikuya
• Format: Journal Article
• Language: English
• Published: Japan Nihon University School of Dentistry 2021
• Subjects: Composite Resins; Cross-Sectional Studies; Dental Materials; Dentistry; flexural properties; Materials Testing; physical properties; posterior restoration; short fiber-reinforced resin composite; Surface Properties; physical properties; posterior restoration; flexural properties; short fiber-reinforced resin composite
• ISSN: 1343-4934; 1880-4926
• DOI: 10.2334/josnusd.20-0436

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 restorations.Methods: Investigated properties were flexural strength, flexural modulus, 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.