Search Results - "PMMA"

The Objective of the study is a development of the drug form reservoirs to hold the basis of vegetable oils for the prosthesis without impairing its strength characteristics. Materialand Methods: The research was conducted on the Bench PMMA samples. The comparison group consisted of smooth plate...

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Films of pure Poly (methyl methacrylate) (PMMA) doped by potassium iodide (KI) salt with percentages (1%) at different thickness prepared by casting method at room temperature. In order to study the effect of increasing thickness on optical properties, transmission and absorption spectra have been r...

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Polyanilines are reported to exhibit stabilizing effects in rubber mixtures submitted to gamma-irradiation and thermo-oxidative treatment. Such abilities may be explained by their action as radical scavengers. Since radical formation followed by main chain scission is a widely accepted mechanism for...

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Zirconia nanoparticles were synthesized by means of a sol-gel method and embedded in poly(methyl methacrylate) (PMMA) by melt compounding. The zirconia was well dispersed in the PMMA matrix, with only a few clusters, especially for the highest investigated zirconia content. NMR results showed hetero...

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Background and objectives: The most common problem associated with the complete denture is the loss of retention after period of time therefore relining procedure is important in many cases, this study was done to compare the dimensional accuracy of PMMA before and after the application of Mollopla...

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Films of PMMA and copper sulphate doped PMMA have been prepared by casting method. Absorbance and transmittance spectra were recorded in the wavelength range (300-900) nm in...

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In this work, study the optical properties of composites consisting of poly Methyl Methacrylate and Berry Paper Mulberry. The samples of composites were prepared using casting method .The Berry Paper Mulberry (BPM) was added by different concentrations are (0, 2, 4 and 6)wt.%. The optical properti...

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The authors present the case of a patient who underwent a facelift with a chin implant 7 years after polymethylmethacrylate (PMMA) implantation, which evolved with foreign body granuloma in a region distant from the filling application. After nearly a year of treatment, the patient evolved with reso...

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Poly (methyl methacrylate) (PMMA) was used as a matrix for fabrication samples of polymer matrix composites (PMCs). The matrix was reinforcement by (Al2O3) powder with a volumetric ratio (20%) and an average grain size (40 ±5) μm. The manufactured samples were treated after conducting the surface t...

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We present comparative studies on the effect of varying the carboxylic-group content of thermally reduced graphene oxides (TRGs) on the anticorrosive properties of as-prepared poly(methyl methacrylate) (PMMA)/TRG composite (PTC) coatings. TRGs were formed from graphene oxide (GO) by thermal exfoliat...

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This paper examines the results of the characterization of two functional composites: Poly(methyl methacrylate) (PMMA)-Ce:YAG (yttrium aluminium garnet doped with cerium) and PMMA-cobalt hexacyanoferrate (CoHCF). The composites were prepared as possible emitters in the fields of lighting thermal sen...

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Background: Polymethyl methacrylate (PMMA) is widely used for denture bases due to its better handling and esthetic, but its inherent brittleness and limited strength leads to fractures. The study aimed to evaluate and compare the addition of polyether ether ketone (PEEK) and aluminum oxide (Al2O3)...

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Orthodontic acrylic resin is used in the construction of orthodontic appliances. It lacks antimicrobial properties and is prone to microbial infection. So, the infection associated with it can be reduced via modification of orthodontic acrylic resin with nanoparticles (NPs) incorporation. The study...

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Organophilic nano ZnO particles have been synthesized in various diols (ethylene glycol – EG, 1,2 propane diol – PD, 1,4 butane diol – BD and tetra(ethylene glycol) – TEG) in the presence of p-toluenesulfonic acid, p-TsOH, as an end capping agent. The addition...

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INTRODUCTION: Decompressive craniectomy is indicated for the treatment of intracranial hypertension in cases of serious traumatic brain injury. This surgery results in a bizarre appearance, as if "part of the head" had been. After regression of cerebral edema and when the patient is in goo...

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Com o aumento do uso de técnicas de reconstrução 3D, para auxiliar no diagnóstico, os programas dedicados estão sendo largamente utilizados. Para isto eles devem ser calibrados a fim de conhecer os valores dos volumes e número de TC dos tecidos humanos. O objetivo é indicar valores de correção para...

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Polymeric nanofibers loaded with antibacterial agents occupy a leading position among many technologies for producing antibacterial materials due to their unique properties. In this work, a novel electrospun nanofiber mat loaded with antibacterial antibiotic levofloxacin (LV) was developed using a b...

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Poly(methyl methacrylate) (PMMA)-based bone cements are widely used in orthopaedic surgery, yet their inherent brittleness, lack of bioactivity, and exothermic polymerization remain critical limitations. Recent strategies have focused on modifying PMMA with functional additives to improve not only m...

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Abstract 2D materials are considered promising alternatives for traditional semiconductors in future electronics, but despite significant research efforts, their defectiveness remains too high for modern device requirements. Here, a new strategy is devised to identify defects in 2D materials and sel...

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