Akademik Veri Yönetim Sistemi
13th International Drug Chemistry Congress, Antalya, Türkiye, 6 - 09 Şubat 2025, ss.211, (Özet Bildiri)
Recent
advancements in restorative dental fillings have centered on enhancing the
mechanical properties of composite fillings to improve their longevity.
Extensive research has been conducted on bonding resins, curing agents, and
filler materials to achieve this goal. By optimizing the length-to-diameter
ratio of fibers in a composite, the load can be effectively transferred from
the weaker matrix to the stronger fibers, resulting in a more durable material.
While various fillers like Silica, Zirconia, Titania, and Barium borosilicate
have been employed in dental restorations, they are typically used in
particulate form. To date, there have been no studies exploring the synthesis
of Barium borosilicate glass fibers and their subsequent incorporation into dental
composites.
This study
focuses on the synthesis and characterization of barium borosilicate nanofibers
for potential use in dental restorative materials. Tetraethyl orthosilicate
(TEOS), Boron tributoxide (B(OBu)3), and Barium chloride dihydrate
(BaCl2.2H2O) were used as precursors for SiO2,
B2O3, and BaO, respectively. Polyvinylpyrrolidone (PVP)
was added to enhance the solution viscosity for electrospinning. Nanofibers
were fabricated using an electrospinning setup with a flow rate of 3 ml/h and
an applied voltage of 25 kV. To induce the glassy phase, the as-spun fibers
were calcined at temperatures ranging from 550 to 850 °C. The synthesized
nanofibers were characterized using scanning electron microscopy (SEM) to
determine their morphology and fiber diameter. The chemical composition was
analyzed using inductively coupled plasma optical emission spectroscopy
(ICP-OES).
Composites for
dental restoration were prepared using the synthesized fibers and a selected
methacrylate monomer mixture. For comparison purposes, composites were also
prepared using spherical barium borosilicate filler materials. To evaluate the
mechanical properties of the prepared composites, flexural and compressive
tests were performed using a universal testing machine.
The study
successfully synthesized fibers with diameters ranging from 110 to 190 nm.
Composites reinforced with these fibers demonstrated significantly higher
flexural and compressive strengths compared to those reinforced with
conventional spherical fillers.