نتایج جستجو برای: new material
تعداد نتایج: 2155794 فیلتر نتایج به سال:
one of the applications of nanotechnology is use of carbon nanotubes for the targeted delivery of drug molecules. to demonstrate the physical and chemical properties of biomolecules and identify new material of drug properties, the interaction of carbon nanotubes (cnts) with biomolecules is a subject of many investigations. cnts is a synthetic compound with extraordinary mechanical, thermal, el...
seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
introduction : the aim of this study was to compare the cytotoxicity of mineral trioxide aggregate (mta) and a new endodontic cement (nec) on l929 mouse fibroblasts. materials and methods: different dilutions (neat, 1/2, 1/10, 1/100) of fresh and set materials placed adjacent flasks of l929 in dmem medium. cellular viability was assessed using mtt assay in three time intervals (24, 48, and 72 h...
Higlighting certain similarities between the two-dimensional Luttinger liquid model and the effective fermionic theory obtained from the hypercharge Lagrangian, we argue the case for a new type of Standard Model extension.
introduction: biocompatibility is a desirable feature for root-end filling materials. in this study we aimed to compare a new material called cold ceramic (cc) with intermediate restorative material (irm) and mineral trioxide aggregate (mta) using methyl-tetrazolium bromide (mtt) assay. materials and methods: the materials were tested in fresh and set states: (n=108). the cytotoxicity was compa...
introduction: this in vitro study aims to evaluate the coronal and apical sealing ability of gutta-percha (gp) root filling used with either mineral trioxide aggregate (mta), new endodontic cement (nec) or ah26 as filler/sealers. materials and methods: forty eight single-rooted extracted teeth were selected, decoronated and then instrumented. samples were randomly divided into three experimenta...
introduction: this in vitro study measured and compared ph and phosphate and calcium ions release of a new endodontic material (cem cement), mineral trioxide aggregate (mta), and portland cement (pc) using uv-visible technique, atomic absorption spectrophotometry methods, and ph meter, respectively. materials and methods: each material was placed in a plastic tube (n=10) and immersed in a glass...
autogenous tooth transplantation (att) can be considered when there is a hopeless molar tooth and suitable donor present. this report presents an unconventional case of successful att of a third molar replacing the adjacent fractured second molar in a 33 year old woman. this wisdom tooth had completely developed roots. root-end filling with calcium enriched mixture (cem) cement was performed in...
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