Israel Cabasso

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Triphenyl bismuth (Ph3Bi) is a promising new additive for making biomedical resins visible on x-ray images. We evaluated the cytotoxicity of Ph3Bi, both alone and as a component of a denture resin, as an initial step in determining its biocompatibility. These experimental materials were compared with several types of dental materials that are in current(More)
Radiopacity is needed in order to facilitate diagnosis of polymeric appliances, which may be dislodged and become impacted in the upper respiratory or digestive tracts. In order for a stable, optically transparent, radiopaque material to be provided, heavy-metal compounds were investigated which we had previously shown to form homogeneous structures with(More)
Filled hollow fibers were prepared and evaluated for application in hemosorption. Powdered activated carbon, urease-carbon, and macroporous ion exchange resins were used as fillers in highly permeable cellulose acetate hollow fibers. The carbon-filled hollow fibers had better mass transfer properties than encapsulated carbon in solid form. Zirconium(More)
Complementary techniques, including nitrogen adsorption, small-angle X-ray scattering (SAXS), and atomic force microscopy (AFM), have been utilized to characterize the surface features of highly microporous carbon materials prepared from highly aromatic polymers. Nitrogen adsorption measurement interpreted by BET, DR, HK, and NLDFT methods reveals these(More)
Novel acrylated phosphonate esters containing 1,3-dioxane and 1,3-dioxolane moieties derived from polyols such as glycerol, D-mannitol, D-sorbitol, pentaerythritol, and dipentaerythritol have been evaluated in vitro for their role as adhesion-promoting agents in composites employed for restorative dentistry. Some of the acrylated phosphonate esters have(More)
A comprehensive study is reported of Langmuir-Blodgett (LB) films (spread at the air/water interface using the Langmuir balance technique) composed of surface active, nonionic, and OH-free amphiphilic siloxane phosphonate ester macromolecules. Analysis is made on three molecular structures in the form of linear polymer(More)
Previously we demonstrated the feasibility of using up to 24% triphenylbismuth (TPB) as a radiopaque, monomer-miscible additive for dental acrylic resins. In this study we examined the influence of TPB on thermomechanical properties of a representative polymethylmethacrylate (PMMA) ambient-cured resin used for temporary dental crowns and bridges. TPB (0%,(More)
PURPOSE Current prosthetic acrylic resins are radiolucent and cannot be imaged using standard radiographic techniques. If accidentally impacted or ingested, delays in localizing or removing the foreign body may be life-threatening. The purpose of this study was to evaluate the influence of an experimental radiopaque additive, triphenyl bismuth (TPB), on(More)
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