Development and characterization of SiC nanofiber and hybrid reinforced composites for dental restorations
Samar E. Salem, Abdallah Shokry, A. H. Badran, W. Y. Ali, Ameer Ali Kamel
TL;DR
This study explores how adding silicon carbide nanofibers and hybrids to dental composites can improve their strength and wear resistance for better long-term dental restorations.
Contribution
The novel contribution is the systematic evaluation of SiC nanofiber and hybrid composites for dental applications, revealing optimal reinforcement levels and curing methods.
Findings
A 0.2% SiC nanofiber composite increased hardness by 3.5% and compression strength by 13.2% compared to the control.
The 0.3% hybrid composite showed a 34% decrease in compression strength, indicating overloading effects.
Strong-mode LED curing improved overall mechanical and tribological performance of the composites.
Abstract
Enhancing the mechanical reliability of dental restorative materials is essential for improving long-term clinical performance. This study examined the mechanical, tribological, morphological, and thermal properties of Bis-GMA/TEGDMA (50/50 wt%) composites reinforced with silicon carbide (SiC) nanofibers and nanoparticles. Seven formulations were prepared: a control, three nanofiber composites (0.1–0.3 wt%), and three nanohybrid systems. All samples were photo-cured using strong, flashing, and gradually strong LED modes. Mechanical behavior was evaluated via Shore hardness and compression testing, while tribological performance was assessed using pin-on-disc wear analysis. SEM, XRD, and DSC provided structural and thermal characterization. SiC incorporation produced clear composition-dependent effects. Hardness increased by 3.5% in the 0.2% nanofiber composite relative to the control.…
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Taxonomy
TopicsDental materials and restorations · Advanced ceramic materials synthesis · Orthopaedic implants and arthroplasty