Highly porous bioresorbable glass-ceramic scaffolds were prepared via sponge replication method by using an open-cell polyurethane foam as a template and phosphate-based glass powders. The glass, belonging to the P2O5-SiO2-CaO-MgO-Na2O-K2O system, was synthesized by a melting-quenching route, ground, and sieved to obtain powders with a grain size of less than 30 μm. A slurry containing glass po...

In this research work, the original 45S5 bioactive glass was modified by introducing zinc and/or strontium oxide (6 mol%) in place of calcium oxide. Sr was added for its ability to stimulate bone formation and Zn for its role in bone metabolism, antibacterial properties, and anti-inflammatory effect. The glasses were produced by means of melting and quenching process. SEM and XRD analyses evide...

Polymeric materials reinforced with synthetic fibers like glass, carbon, and aramid provide advantage of high stiffness and strength to weight ratio as compared to conventional materials like wood, concrete etc. Despite of these favours modern researches are going on in the field of natural composites because of low initial cost and availability of ease. I the light of these the present experim...

A study is made of fracture from cyclic loading of WC spheres on the top surfaces of thick (1 mm) brittle layers on polymeric substrates, as representative of repetitive occlusal contact on dental crown structures. The advantage of glass layers is that internal cracks can be followed in situ during the entire cyclic loading process. The glass surfaces are first given a surface-abrasion treatmen...

Glass-fibre reinforced polymer matrix composites exhibit superior properties to traditional materials. Thus, they have found a broad variety of applications in modern industry. For process development and quality control sophisticated three-dimensional methods for non-destructive characterization are needed. X-ray computed tomography (CT) is a powerful radiographic nondestructive-testing method...

Porosity affects performance of scaffolds for bone tissue engineering both in vitro and vivo. Macropores (i.e., pores with a diameter >100 μm) are essential cellular infiltration; micropores 1-10 promote cell adhesion facilitate nutrient absorption. Scaffolds containing macropores exploit the advantages pore sizes have excellent osteogenic properties. Nanopores 1-50 nm) can be included as well,...